diff --git a/examples/callgraph/java-maven-minimal/.debricked/soot-wrapper.jar b/examples/callgraph/java-maven-minimal/.debricked/soot-wrapper.jar
new file mode 100644
index 00000000..57c5c17c
Binary files /dev/null and b/examples/callgraph/java-maven-minimal/.debricked/soot-wrapper.jar differ
diff --git a/examples/callgraph/java-maven-minimal/.debrickedTmpFolder/commons-lang3-3.14.0.jar b/examples/callgraph/java-maven-minimal/.debrickedTmpFolder/commons-lang3-3.14.0.jar
new file mode 100644
index 00000000..da9302ff
Binary files /dev/null and b/examples/callgraph/java-maven-minimal/.debrickedTmpFolder/commons-lang3-3.14.0.jar differ
diff --git a/examples/callgraph/java-maven-minimal/CALLGRAPH_OUTPUT.md b/examples/callgraph/java-maven-minimal/CALLGRAPH_OUTPUT.md
new file mode 100644
index 00000000..9469803e
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/CALLGRAPH_OUTPUT.md
@@ -0,0 +1,183 @@
+# Callgraph Output Analysis
+
+This document explains the `debricked-call-graph.java` file generated by running the sample project.
+
+## Output Format
+
+The callgraph output is a **JSON file** containing the complete static call graph for the Java project.
+
+### Top-level Structure
+
+```json
+{
+  "version": "5",
+  "data": [
+    [ /* method entry 1 */ ],
+    [ /* method entry 2 */ ],
+    ...
+  ]
+}
+```
+
+### Method Entry Format
+
+Each method in the `data` array is represented as:
+
+```
+[
+  methodSignature,              // 0: Full method signature
+  isUserCode,                   // 1: Boolean - is this user-written (true) or library (false)
+  isNative,                     // 2: Boolean - is this a native method
+  className,                    // 3: Class name
+  sourceFile,                   // 4: Source file path
+  lineNumber,                   // 5: Method definition line number
+  unknown,                      // 6: Unused field (-1)
+  callers                       // 7: Array of caller entries
+]
+```
+
+### Caller Entry Format
+
+Each caller in the method's `callers` array is:
+
+```
+[
+  callerMethodSignature,        // Who calls this method
+  callLineNumber,               // At which line they call it
+  unknown                       // Direction marker ("-")
+]
+```
+
+## Example: Tracing a Call Path
+
+From the sample app, here's how to trace a call:
+
+**App.main() calls OrderService.placeOrder():**
+
+```json
+"com.example.callgraph.OrderService.placeOrder(String, int, double)" → [
+  // ... other fields ...
+  [
+    [
+      "com.example.callgraph.App.main(String[])",  // Called by App.main
+      8,                                             // At line 8
+      "-"
+    ]
+  ]
+]
+```
+
+**OrderService.placeOrder() calls PricingService.calculateTotal():**
+
+```json
+"com.example.callgraph.PricingService.calculateTotal(int, double)" → [
+  // ... other fields ...
+  [
+    [
+      "com.example.callgraph.OrderService.placeOrder(String, int, double)",
+      11,    // At line 11
+      "-"
+    ]
+  ]
+]
+```
+
+**PricingService.calculateTotal() calls applyDiscount():**
+
+```json
+"com.example.callgraph.PricingService.applyDiscount(double)" → [
+  // ... other fields ...
+  [
+    [
+      "com.example.callgraph.PricingService.calculateTotal(int, double)",
+      6,    // At line 6
+      "-"
+    ]
+  ]
+]
+```
+
+## Full Call Chain in Sample
+
+```
+App.main(String[])
+  ↓ (line 5)
+  PricingService.<init>()
+  
+App.main(String[])
+  ↓ (line 6)
+  OrderService.<init>(PricingService)
+  
+App.main(String[])
+  ↓ (line 8)
+  OrderService.placeOrder(String, int, double)
+    ↓ (line 11)
+    PricingService.calculateTotal(int, double)
+      ↓ (line 6)
+      PricingService.applyDiscount(double)
+    
+App.main(String[])
+  ↓ (line 9)
+  LoggerUtil.log(String)
+    ↓ (line 10)
+    StringUtils.upperCase(String)
+      ↓ (line 9348)
+      String.toUpperCase()
+```
+
+## Key Fields Explained
+
+| Field | Meaning | Example |
+|-------|---------|---------|
+| `methodSignature` | Full qualified method with params | `com.example.callgraph.App.main(String[])` |
+| `isUserCode` | `true` for app code, `false` for libraries/JDK | `true` for our classes, `false` for JDK |
+| `isNative` | `true` for native methods | `true` for `Object.registerNatives()` |
+| `className` | Fully qualified class name | `com.example.callgraph.App` |
+| `sourceFile` | Relative path to .java file or `-` for JDK | `com/example/callgraph/App.java` |
+| `lineNumber` | Line where method is defined | `4` |
+| `callers[i][0]` | Method that calls this method | Same signature format |
+| `callers[i][1]` | Line number of the call site | `8` |
+
+## Understanding the Data Flow
+
+1. **Find a method** by searching for its signature in the data array
+2. **See who calls it** by looking at the `callers` field (index 7)
+3. **Find those callers** by searching for them in the data array
+4. **Repeat** to build the full call chain
+
+## Practical Use Cases
+
+### Find all methods called from App.main()
+
+Search for `"com.example.callgraph.App.main(String[])"` then extract caller entries where `App.main` appears in the callers.
+
+### Find all methods that call a specific method
+
+Search the data array and look for methods that have the target method in their callers list.
+
+### Identify library usage
+
+Look for methods with `isUserCode: false` to understand which external libraries/JDK methods are being called.
+
+### Analyze reachability
+
+Starting from `main()`, trace through all callers recursively to find all reachable methods.
+
+## Soot Analysis Details
+
+This callgraph was generated by **Soot** version 5.1, a static Java bytecode analysis framework that:
+
+- Analyzes `.class` files (compiled Java bytecode)
+- Builds a static call graph without running the code
+- Includes both library and user code in the graph
+- Works at the bytecode level, so can find method calls not obvious in source code
+
+The wrapper processes:
+- **User code**: From `target/classes/` (your compiled app)
+- **Library code**: From `.debrickedTmpFolder/` (Maven dependencies)
+- **JDK**: Auto-included in analysis
+
+## File Size Note
+
+The JSON can be quite large (especially with many dependencies) because it includes the complete transitive closure of all method calls, including deep library internals.
+
diff --git a/examples/callgraph/java-maven-minimal/README.md b/examples/callgraph/java-maven-minimal/README.md
new file mode 100644
index 00000000..dd6071ab
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/README.md
@@ -0,0 +1,280 @@
+# Java Maven Callgraph Sample
+
+This sample is a minimal Java 11 Maven app that demonstrates static call graph generation using Debricked CLI and Soot. It provides a complete working example of how to generate, analyze, and understand Java call graphs.
+
+## What this sample does
+
+- Builds Java bytecode into `target/classes`
+- Uses an external dependency (`commons-lang3`) for realistic dependency analysis
+- Creates clear method-call edges for demonstration:
+  - `App.main → OrderService.placeOrder`
+  - `OrderService.placeOrder → PricingService.calculateTotal`
+  - `PricingService.calculateTotal → PricingService.applyDiscount`
+  - `App.main → LoggerUtil.log`
+  - `LoggerUtil.log → StringUtils.upperCase` (external library call)
+
+## Project Layout
+
+```
+.
+├── pom.xml                           Maven configuration
+├── src/main/java/com/example/callgraph/
+│   ├── App.java                     Entry point with main()
+│   ├── OrderService.java            Orchestrates pricing logic
+│   ├── PricingService.java          Calculates totals & discounts
+│   └── LoggerUtil.java              Logs using commons-lang3
+├── run-callgraph.sh                 Automated build & generation
+├── setup-prerequisites.sh           Checks Java/Maven/Debricked
+├── analyze-callgraph.sh             Analyzes generated callgraph
+├── CALLGRAPH_OUTPUT.md              Output format documentation
+└── README.md                         This file
+```
+
+## Prerequisites
+
+Required tools:
+- **Java 11 or higher** - for compiling and callgraph analysis
+- **Maven** - for building the Java project
+- **Debricked CLI** - for generating the callgraph
+
+### Check prerequisites
+
+```bash
+cd /home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-minimal
+bash setup-prerequisites.sh
+```
+
+This script checks which tools are installed and provides OS-specific installation instructions if needed.
+
+## Quick Start
+
+### Automated (recommended)
+
+```bash
+cd /home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-minimal
+bash run-callgraph.sh
+```
+
+The script will:
+1. ✓ Verify Java 11+ is installed
+2. ✓ Build the Maven project (`mvn package`)
+3. ✓ Copy external dependencies
+4. ✓ Generate the callgraph
+5. ✓ Verify the output artifact
+
+### Manual steps
+
+```bash
+cd /home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-minimal
+
+# Build the project
+mvn package -q -DskipTests
+
+# Copy Maven dependencies to .debrickedTmpFolder
+mvn -q -B dependency:copy-dependencies -DoutputDirectory=./.debrickedTmpFolder
+
+# Generate callgraph (option 1: no rebuild)
+debricked callgraph --no-build
+
+# Or let debricked rebuild first (option 2: auto-build)
+debricked callgraph
+```
+
+## Generated Artifacts
+
+After running the scripts, you'll see:
+
+| File/Folder | Purpose |
+|------------|---------|
+| `debricked-call-graph.java` | **Main output**: JSON callgraph with all method relationships |
+| `.debrickedTmpFolder/` | Maven dependencies (e.g., `commons-lang3-3.14.0.jar`) |
+| `target/classes/` | Compiled `.class` files from Maven build |
+
+## Understanding the Output
+
+### Callgraph Statistics
+
+```
+Total Methods: 29
+  - User Code: 9
+  - Library/JDK: 20
+```
+
+### User Code Methods
+
+```
+com.example.callgraph.App.main(String[])
+com.example.callgraph.OrderService.placeOrder(String, int, double)
+com.example.callgraph.OrderService.<init>(PricingService)
+com.example.callgraph.PricingService.calculateTotal(int, double)
+com.example.callgraph.PricingService.applyDiscount(double)
+com.example.callgraph.PricingService.<init>()
+com.example.callgraph.LoggerUtil.log(String)
+com.example.callgraph.LoggerUtil.<init>()
+com.example.callgraph.App.<init>()
+```
+
+### Analyze the Callgraph
+
+```bash
+bash analyze-callgraph.sh debricked-call-graph.java
+```
+
+Output includes:
+- Total method count
+- User code vs. library breakdown
+- All user-written methods
+- Most-called methods (library internals)
+
+### Output Format
+
+The `debricked-call-graph.java` is a **JSON document** with structure:
+
+```json
+{
+  "version": "5",
+  "data": [
+    [
+      "com.example.callgraph.App.main(String[])",  // Method signature
+      true,                                         // Is user code?
+      false,                                        // Is native?
+      "com.example.callgraph.App",                 // Class name
+      "com/example/callgraph/App.java",            // Source file
+      4,                                            // Line number
+      -1,                                           // Unused
+      [                                             // Callers array
+        ["com.example.callgraph.OrderService.placeOrder(...)", 8, "-"]
+      ]
+    ]
+    // ... more methods ...
+  ]
+}
+```
+
+For complete format documentation, see **`CALLGRAPH_OUTPUT.md`**.
+
+## Technology: Soot Framework
+
+The callgraph is generated by **Soot 5.1**, a static Java bytecode analysis framework:
+
+- **Analyzes** compiled `.class` files (not source code)
+- **Builds** a static call graph without executing the code
+- **Includes** library and JDK code in the graph
+- **Works** at the bytecode level for precision
+
+### Processing Flow
+
+```
+Java Source Code
+    ↓ (mvn package)
+Compiled .class Files (target/classes/)
+    ↓ (SootWrapper.jar)
+Static Call Graph (debricked-call-graph.java)
+    ↓ (analyze-callgraph.sh)
+Analysis & Visualization
+```
+
+## Example: Tracing a Call Path
+
+Looking at the call chain in the JSON:
+
+**How App.main calls LoggerUtil.log:**
+
+```
+App.main() line 9 calls LoggerUtil.log()
+  ↓
+LoggerUtil.log() line 10 calls StringUtils.upperCase()
+  ↓
+StringUtils.upperCase() line 9348 calls String.toUpperCase()
+```
+
+This shows how even a simple logging call transitively uses multiple library methods.
+
+## Troubleshooting
+
+### Build fails
+
+```bash
+mvn clean package -q -DskipTests -e
+```
+
+Check that Java 11+ is installed and available.
+
+### Callgraph not generated
+
+Verify `.class` files were created:
+```bash
+find target/classes -name "*.class"
+```
+
+Verify dependencies were copied:
+```bash
+ls -la .debrickedTmpFolder/
+```
+
+Re-run callgraph generation:
+```bash
+/path/to/debricked callgraph --no-build
+```
+
+### File not found errors
+
+Ensure you're running from the sample directory:
+```bash
+cd /home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-minimal
+pwd  # Verify current directory
+bash run-callgraph.sh
+```
+
+### Need more details
+
+See related documentation:
+- `CALLGRAPH_OUTPUT.md` - Output format explanation
+- `internal/callgraph/language/java/README.md` - Debricked Java callgraph docs
+- Soot documentation: https://github.com/soot-oss/soot
+
+## Use Cases
+
+This sample demonstrates:
+
+- ✓ **Building Java projects** with Maven
+- ✓ **Generating static call graphs** using Debricked
+- ✓ **Analyzing call relationships** between methods
+- ✓ **Understanding library integration** through call paths
+- ✓ **Identifying reachability** from entry points
+- ✓ **Detecting call patterns** in complex code
+
+## Next Steps
+
+- **Integrate into CI/CD**: Add `debricked callgraph` to your pipeline
+- **Analyze larger projects**: Use this template for real applications
+- **Parse the JSON**: Build tools to process the callgraph output
+- **Combine with vulnerability analysis**: Use callgraph for reachability analysis of CVEs
+- **Explore Soot options**: Check Soot documentation for advanced analysis modes
+
+## Files Reference
+
+| File | Lines | Purpose |
+|------|-------|---------|
+| `pom.xml` | 36 | Maven project configuration |
+| `src/main/java/com/example/callgraph/App.java` | 11 | Entry point with main() |
+| `src/main/java/com/example/callgraph/OrderService.java` | 13 | Service orchestrating pricing |
+| `src/main/java/com/example/callgraph/PricingService.java` | 11 | Pricing logic with discount |
+| `src/main/java/com/example/callgraph/LoggerUtil.java` | 12 | Logging using commons-lang3 |
+| `run-callgraph.sh` | 70+ | Automated build & generation |
+| `setup-prerequisites.sh` | 119 | Dependency checker |
+| `analyze-callgraph.sh` | 80+ | JSON callgraph analyzer |
+| `CALLGRAPH_OUTPUT.md` | 200+ | Output format documentation |
+
+## Support
+
+For issues or questions:
+1. Check `CALLGRAPH_OUTPUT.md` for output format details
+2. Review `setup-prerequisites.sh` output for missing dependencies
+3. Run with verbose flags: `debricked callgraph --help`
+4. Check the main Debricked repo documentation
+
+---
+
+**Happy call graph analysis!** 📊✨
+
diff --git a/examples/callgraph/java-maven-minimal/analyze-callgraph.sh b/examples/callgraph/java-maven-minimal/analyze-callgraph.sh
new file mode 100755
index 00000000..f70aafd7
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/analyze-callgraph.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+
+# Callgraph Parser and Analyzer Script
+# This script helps analyze the generated debricked-call-graph.java file
+
+CALLGRAPH_FILE="${1:-debricked-call-graph.java}"
+
+if [ ! -f "$CALLGRAPH_FILE" ]; then
+    echo "ERROR: Callgraph file not found: $CALLGRAPH_FILE"
+    exit 1
+fi
+
+echo "=========================================="
+echo "Callgraph Analysis"
+echo "=========================================="
+echo ""
+
+# Check for jq (JSON processor)
+if ! command -v jq &> /dev/null; then
+    echo "⚠ Note: jq is not installed. For JSON parsing, install with:"
+    echo "  sudo apt-get install jq   # Linux"
+    echo "  brew install jq            # macOS"
+    echo ""
+    echo "Basic statistics without jq:"
+    echo ""
+fi
+
+# Count methods
+METHOD_COUNT=$(grep -o '"[^"]*"' "$CALLGRAPH_FILE" | grep -c '\[')
+echo "Callgraph File: $CALLGRAPH_FILE"
+echo "File Size: $(ls -lh "$CALLGRAPH_FILE" | awk '{print $5}')"
+echo ""
+
+if command -v jq &> /dev/null; then
+    echo "=== JSON Analysis ==="
+    echo ""
+
+    # Parse with jq
+    TOTAL_METHODS=$(jq '.data | length' "$CALLGRAPH_FILE")
+    echo "Total Methods: $TOTAL_METHODS"
+
+    USER_CODE=$(jq '[.data[] | select(.[1] == true)] | length' "$CALLGRAPH_FILE")
+    LIBRARY_CODE=$(jq '[.data[] | select(.[1] == false)] | length' "$CALLGRAPH_FILE")
+
+    echo "  - User Code Methods: $USER_CODE"
+    echo "  - Library/JDK Methods: $LIBRARY_CODE"
+    echo ""
+
+    # Find entry points (methods in user code with no callers or few callers)
+    echo "=== User-Code Methods ==="
+    jq -r '.data[] | select(.[1] == true) | .[0]' "$CALLGRAPH_FILE" | head -20
+    echo ""
+
+    # Show methods that are most called (highest connectivity)
+    echo "=== Most Called Methods (Top 10) ==="
+    jq '[.data[] | {method: .[0], callerCount: (.[7] | length)}] | sort_by(-.callerCount) | .[0:10] | .[] | "\(.callerCount) callers: \(.method)"' -r "$CALLGRAPH_FILE"
+    echo ""
+
+else
+    echo "=== Without jq (basic analysis) ==="
+    echo ""
+
+    # Simple grep-based analysis
+    TOTAL=$(grep -o '\["com\.' "$CALLGRAPH_FILE" | wc -l)
+    echo "Methods starting with 'com.': $TOTAL"
+
+    echo ""
+    echo "Sample methods found:"
+    grep -o '"[^"]*com\.example\.callgraph[^"]*"' "$CALLGRAPH_FILE" | sort -u | head -10
+
+fi
+
+echo ""
+echo "=========================================="
+echo "For detailed analysis, see CALLGRAPH_OUTPUT.md"
+echo "=========================================="
+
diff --git a/examples/callgraph/java-maven-minimal/pom.xml b/examples/callgraph/java-maven-minimal/pom.xml
new file mode 100644
index 00000000..98305d50
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/pom.xml
@@ -0,0 +1,35 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.example.callgraph</groupId>
+    <artifactId>java-maven-minimal</artifactId>
+    <version>1.0.0</version>
+    <name>java-maven-minimal</name>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.14.0</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.11.0</version>
+            </plugin>
+        </plugins>
+    </build>
+</project>
+
diff --git a/examples/callgraph/java-maven-minimal/run-callgraph.sh b/examples/callgraph/java-maven-minimal/run-callgraph.sh
new file mode 100755
index 00000000..b0ba8f5d
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/run-callgraph.sh
@@ -0,0 +1,124 @@
+#!/bin/bash
+
+# Debricked Java Callgraph Sample - Automated Build & Generation Script
+# This script runs the full flow described in the README:
+# 1. Verify Java version
+# 2. Build with Maven
+# 3. Copy dependencies
+# 4. Generate callgraph
+
+set -e
+
+SAMPLE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SAMPLE_DIR"
+
+echo "================================"
+echo "Debricked Java Callgraph Sample"
+echo "================================"
+echo ""
+
+# Step 1: Verify Java version
+echo "[1/4] Checking Java version..."
+if ! command -v java &> /dev/null; then
+    echo "ERROR: Java not found. Please install Java 11 or higher."
+    exit 1
+fi
+java -version
+echo ""
+
+# Step 2: Build Maven project
+echo "[2/4] Building Maven project..."
+if ! command -v mvn &> /dev/null; then
+    echo "ERROR: Maven not found. Please install Maven."
+    exit 1
+fi
+mvn package -q -DskipTests -e
+echo "✓ Maven build complete"
+echo ""
+
+# Step 3: Copy dependencies
+echo "[3/4] Copying external dependencies..."
+mvn -q -B dependency:copy-dependencies -DoutputDirectory=./.debrickedTmpFolder -DskipTests -e
+echo "✓ Dependencies copied to .debrickedTmpFolder/"
+echo ""
+
+# Step 3b: Seed .debricked/soot-wrapper.jar so CLI does not attempt a network download
+# The embedded jar in the repo supports Java 21+; for Java 11/17 the CLI would normally
+# download a versioned jar from GitHub. We pre-seed it with the embedded jar to keep
+# this sample fully offline.
+SOOT_JAR_DIR="$SAMPLE_DIR/.debricked"
+SOOT_JAR_PATH="$SOOT_JAR_DIR/soot-wrapper.jar"
+REPO_ROOT_JAR="$(cd "$SAMPLE_DIR/../../.." && pwd)/internal/callgraph/language/java/soot-wrapper.jar"
+if [ ! -f "$SOOT_JAR_PATH" ]; then
+    echo "Seeding .debricked/soot-wrapper.jar from repo..."
+    mkdir -p "$SOOT_JAR_DIR"
+    if [ -f "$REPO_ROOT_JAR" ]; then
+        cp "$REPO_ROOT_JAR" "$SOOT_JAR_PATH"
+        echo "✓ soot-wrapper.jar seeded from repo"
+    else
+        echo "⚠ Could not find soot-wrapper.jar at $REPO_ROOT_JAR"
+        echo "  The CLI will attempt to download it from GitHub (requires internet access)"
+    fi
+fi
+echo ""
+
+# Step 4: Generate callgraph
+echo "[4/4] Generating callgraph..."
+
+# Try to find debricked in PATH, or use local repo binary
+DEBRICKED_CMD="debricked"
+if ! command -v debricked &> /dev/null; then
+    # Try to find debricked binary in repo root
+    # Sample is at: examples/callgraph/java-maven-minimal
+    # Repo root is: ../../..
+    REPO_ROOT="$(cd "$SAMPLE_DIR/../../.." && pwd)"
+    if [ -f "$REPO_ROOT/debricked" ]; then
+        DEBRICKED_CMD="$REPO_ROOT/debricked"
+        echo "Using debricked from: $DEBRICKED_CMD"
+    else
+        echo "ERROR: debricked CLI not found in PATH or at $REPO_ROOT/debricked"
+        echo "Please either:"
+        echo "  1. Add debricked to your PATH"
+        echo "  2. Build from repo root: cd $REPO_ROOT && go build -o debricked ./cmd/debricked"
+        exit 1
+    fi
+fi
+
+# Try with --no-build flag (assumes already built)
+$DEBRICKED_CMD callgraph --no-build
+
+echo ""
+echo "================================"
+echo "Callgraph generation complete!"
+echo "================================"
+echo ""
+
+# Verify artifacts
+if [ -f debricked-call-graph.java ]; then
+    FILE_SIZE=$(wc -c < debricked-call-graph.java)
+    echo "✓ Artifact created: debricked-call-graph.java"
+    echo "  Size: $(ls -lh debricked-call-graph.java | awk '{print $5}')"
+    echo "  Format: JSON callgraph data ($(echo "($FILE_SIZE / 1024)" | bc)KB)"
+    echo ""
+    echo "  Sample output (first 200 chars):"
+    head -c 200 debricked-call-graph.java | sed 's/^/    /'
+    echo ""
+else
+    echo "⚠ Expected artifact not found: debricked-call-graph.java"
+    echo "  This may indicate an error in callgraph generation."
+    exit 1
+fi
+
+if [ -d .debrickedTmpFolder ]; then
+    DEPS_COUNT=$(find .debrickedTmpFolder -name "*.jar" 2>/dev/null | wc -l)
+    echo "✓ Dependencies folder: .debrickedTmpFolder/ (contains $DEPS_COUNT jars)"
+fi
+
+echo ""
+echo "✓ Sample complete! Callgraph successfully generated."
+echo ""
+echo "Next steps:"
+echo "  - Review the generated debricked-call-graph.java"
+echo "  - Parse the JSON to analyze call relationships"
+echo "  - See README.md for details"
+
diff --git a/examples/callgraph/java-maven-minimal/setup-prerequisites.sh b/examples/callgraph/java-maven-minimal/setup-prerequisites.sh
new file mode 100755
index 00000000..f2d35346
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/setup-prerequisites.sh
@@ -0,0 +1,118 @@
+#!/bin/bash
+
+# Debricked Java Callgraph Sample - Prerequisites Setup Script
+# This script checks and helps install required dependencies:
+# - Java 11 or higher
+# - Maven
+# - Debricked CLI
+
+set -e
+
+SAMPLE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SAMPLE_DIR"
+
+echo "================================"
+echo "Prerequisites Check & Setup"
+echo "================================"
+echo ""
+
+# Detect OS
+if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+    OS="linux"
+    PKG_MANAGER=""
+    if command -v apt-get &> /dev/null; then
+        PKG_MANAGER="apt-get"
+    elif command -v yum &> /dev/null; then
+        PKG_MANAGER="yum"
+    fi
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+    OS="macos"
+    PKG_MANAGER="brew"
+else
+    OS="unknown"
+fi
+
+echo "Detected OS: $OS"
+echo ""
+
+# Check Java
+echo "[1/3] Checking Java..."
+if command -v java &> /dev/null; then
+    JAVA_VERSION=$(java -version 2>&1 | grep -oP 'version "\K[0-9]+' | head -1)
+    echo "✓ Java is installed (version: $JAVA_VERSION)"
+    if [ "$JAVA_VERSION" -lt 11 ]; then
+        echo "⚠ WARNING: Java version is less than 11. Callgraph requires Java 11+."
+    fi
+else
+    echo "✗ Java not found"
+    echo ""
+    if [ "$OS" == "linux" ]; then
+        echo "To install Java 11+, run:"
+        if [ "$PKG_MANAGER" == "apt-get" ]; then
+            echo "  sudo apt-get update && sudo apt-get install -y openjdk-11-jdk"
+        elif [ "$PKG_MANAGER" == "yum" ]; then
+            echo "  sudo yum install -y java-11-openjdk-devel"
+        fi
+    elif [ "$OS" == "macos" ]; then
+        echo "To install Java 11+, run:"
+        echo "  brew install openjdk@11"
+        echo "Then add it to your PATH:"
+        echo "  sudo ln -sfn /opt/homebrew/opt/openjdk@11/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-11.jdk"
+    else
+        echo "Please visit https://www.oracle.com/java/technologies/downloads/ to install Java 11+"
+    fi
+    echo ""
+fi
+
+# Check Maven
+echo "[2/3] Checking Maven..."
+if command -v mvn &> /dev/null; then
+    MVN_VERSION=$(mvn -v 2>&1 | grep "Apache Maven" | awk '{print $3}')
+    echo "✓ Maven is installed (version: $MVN_VERSION)"
+else
+    echo "✗ Maven not found"
+    echo ""
+    if [ "$OS" == "linux" ]; then
+        echo "To install Maven, run:"
+        if [ "$PKG_MANAGER" == "apt-get" ]; then
+            echo "  sudo apt-get update && sudo apt-get install -y maven"
+        elif [ "$PKG_MANAGER" == "yum" ]; then
+            echo "  sudo yum install -y maven"
+        fi
+    elif [ "$OS" == "macos" ]; then
+        echo "To install Maven, run:"
+        echo "  brew install maven"
+    else
+        echo "Please visit https://maven.apache.org/download.cgi to install Maven"
+    fi
+    echo ""
+fi
+
+# Check Debricked CLI
+echo "[3/3] Checking Debricked CLI..."
+if command -v debricked &> /dev/null; then
+    DEBRICKED_VERSION=$(debricked version 2>&1 || echo "unknown")
+    echo "✓ Debricked CLI is installed (version: $DEBRICKED_VERSION)"
+else
+    echo "✗ Debricked CLI not found"
+    echo ""
+    echo "To install Debricked CLI, visit:"
+    echo "  https://github.com/debricked/cli/releases"
+    echo ""
+    echo "Or if building from this repo:"
+    echo "  cd /home/dritthi/projects/debricked-projects/cli"
+    echo "  go build -o debricked ./cmd/debricked"
+    echo "  # Then add to PATH or use ./debricked directly"
+    echo ""
+fi
+
+echo ""
+echo "================================"
+echo "Setup Check Complete"
+echo "================================"
+echo ""
+echo "Next steps:"
+echo "1. Install any missing prerequisites from instructions above"
+echo "2. Run: bash run-callgraph.sh"
+echo ""
+
diff --git a/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/App.java b/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/App.java
new file mode 100644
index 00000000..a9804566
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/App.java
@@ -0,0 +1,12 @@
+package com.example.callgraph;
+
+public class App {
+    public static void main(String[] args) {
+        PricingService pricingService = new PricingService();
+        OrderService orderService = new OrderService(pricingService);
+
+        String confirmation = orderService.placeOrder("book", 2, 24.99);
+        LoggerUtil.log(confirmation);
+    }
+}
+
diff --git a/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/LoggerUtil.java b/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/LoggerUtil.java
new file mode 100644
index 00000000..8c525e64
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/LoggerUtil.java
@@ -0,0 +1,14 @@
+package com.example.callgraph;
+
+import org.apache.commons.lang3.StringUtils;
+
+public final class LoggerUtil {
+    private LoggerUtil() {
+    }
+
+    public static void log(String message) {
+        String normalized = StringUtils.upperCase(message);
+        System.out.println("[APP] " + normalized);
+    }
+}
+
diff --git a/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/OrderService.java b/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/OrderService.java
new file mode 100644
index 00000000..80786c81
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/OrderService.java
@@ -0,0 +1,15 @@
+package com.example.callgraph;
+
+public class OrderService {
+    private final PricingService pricingService;
+
+    public OrderService(PricingService pricingService) {
+        this.pricingService = pricingService;
+    }
+
+    public String placeOrder(String item, int quantity, double unitPrice) {
+        double total = pricingService.calculateTotal(quantity, unitPrice);
+        return "Order placed: " + item + " x" + quantity + " total=" + total;
+    }
+}
+
diff --git a/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/PricingService.java b/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/PricingService.java
new file mode 100644
index 00000000..12c5e5d0
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/PricingService.java
@@ -0,0 +1,16 @@
+package com.example.callgraph;
+
+public class PricingService {
+    public double calculateTotal(int quantity, double unitPrice) {
+        double subtotal = quantity * unitPrice;
+        return applyDiscount(subtotal);
+    }
+
+    private double applyDiscount(double subtotal) {
+        if (subtotal >= 50.0) {
+            return subtotal * 0.9;
+        }
+        return subtotal;
+    }
+}
+
diff --git a/examples/callgraph/java-maven-minimal/target/classes/com/example/callgraph/App.class b/examples/callgraph/java-maven-minimal/target/classes/com/example/callgraph/App.class
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diff --git a/examples/callgraph/java-maven-minimal/target/java-maven-minimal-1.0.0.jar b/examples/callgraph/java-maven-minimal/target/java-maven-minimal-1.0.0.jar
new file mode 100644
index 00000000..51fa9b16
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diff --git a/examples/callgraph/java-maven-minimal/target/maven-archiver/pom.properties b/examples/callgraph/java-maven-minimal/target/maven-archiver/pom.properties
new file mode 100644
index 00000000..682a2ccb
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/target/maven-archiver/pom.properties
@@ -0,0 +1,5 @@
+#Generated by Maven
+#Wed May 13 17:47:54 UTC 2026
+groupId=com.example.callgraph
+artifactId=java-maven-minimal
+version=1.0.0
diff --git a/examples/callgraph/java-maven-minimal/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst b/examples/callgraph/java-maven-minimal/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
new file mode 100644
index 00000000..a2915011
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
@@ -0,0 +1,4 @@
+com/example/callgraph/LoggerUtil.class
+com/example/callgraph/PricingService.class
+com/example/callgraph/App.class
+com/example/callgraph/OrderService.class
diff --git a/examples/callgraph/java-maven-minimal/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst b/examples/callgraph/java-maven-minimal/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
new file mode 100644
index 00000000..3bcde7d1
--- /dev/null
+++ b/examples/callgraph/java-maven-minimal/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
@@ -0,0 +1,4 @@
+/home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/App.java
+/home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/OrderService.java
+/home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/LoggerUtil.java
+/home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-minimal/src/main/java/com/example/callgraph/PricingService.java
diff --git a/examples/callgraph/java-maven-sootup/.debrickedTmpFolder/commons-lang3-3.14.0.jar b/examples/callgraph/java-maven-sootup/.debrickedTmpFolder/commons-lang3-3.14.0.jar
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index 00000000..da9302ff
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diff --git a/examples/callgraph/java-maven-sootup/SootUpWrapper/pom.xml b/examples/callgraph/java-maven-sootup/SootUpWrapper/pom.xml
new file mode 100644
index 00000000..53b015ac
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/SootUpWrapper/pom.xml
@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.debricked.sootup</groupId>
+    <artifactId>sootup-wrapper</artifactId>
+    <version>1.0.0</version>
+    <name>SootUpWrapper</name>
+    <description>
+        Callgraph generator using SootUp — replaces SootWrapper (classic Soot).
+        Accepts the same CLI interface as SootWrapper.jar for drop-in comparison.
+        Algorithms: CHA (default) or RTA, selectable via -a flag.
+    </description>
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <sootup.version>1.3.0</sootup.version>
+    </properties>
+    <dependencies>
+        <!-- SootUp core -->
+        <dependency>
+            <groupId>org.soot-oss</groupId>
+            <artifactId>sootup.core</artifactId>
+            <version>${sootup.version}</version>
+        </dependency>
+        <!-- SootUp Java language support -->
+        <dependency>
+            <groupId>org.soot-oss</groupId>
+            <artifactId>sootup.java.core</artifactId>
+            <version>${sootup.version}</version>
+        </dependency>
+        <!-- SootUp Java bytecode frontend (reads .class files and JARs) -->
+        <dependency>
+            <groupId>org.soot-oss</groupId>
+            <artifactId>sootup.java.bytecode</artifactId>
+            <version>${sootup.version}</version>
+        </dependency>
+        <!-- SootUp callgraph algorithms (CHA, RTA) -->
+        <dependency>
+            <groupId>org.soot-oss</groupId>
+            <artifactId>sootup.callgraph</artifactId>
+            <version>${sootup.version}</version>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.11.0</version>
+            </plugin>
+            <!-- Build a fat (uber) JAR so it can be executed standalone -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.5.0</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <createDependencyReducedPom>false</createDependencyReducedPom>
+                            <transformers>
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    <mainClass>com.debricked.sootup.SootUpWrapper</mainClass>
+                                </transformer>
+                                <!-- Merge service files for SootUp's SPI usage -->
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                            </transformers>
+                            <filters>
+                                <filter>
+                                    <artifact>*:*</artifact>
+                                    <excludes>
+                                        <exclude>META-INF/*.SF</exclude>
+                                        <exclude>META-INF/*.DSA</exclude>
+                                        <exclude>META-INF/*.RSA</exclude>
+                                    </excludes>
+                                </filter>
+                            </filters>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>
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diff --git a/examples/callgraph/java-maven-sootup/SootUpWrapper/target/maven-archiver/pom.properties b/examples/callgraph/java-maven-sootup/SootUpWrapper/target/maven-archiver/pom.properties
new file mode 100644
index 00000000..d037a3d5
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/SootUpWrapper/target/maven-archiver/pom.properties
@@ -0,0 +1,5 @@
+#Generated by Maven
+#Thu May 14 05:01:01 UTC 2026
+groupId=com.debricked.sootup
+artifactId=sootup-wrapper
+version=1.0.0
diff --git a/examples/callgraph/java-maven-sootup/SootUpWrapper/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst b/examples/callgraph/java-maven-sootup/SootUpWrapper/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
new file mode 100644
index 00000000..0d352c87
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/SootUpWrapper/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
@@ -0,0 +1,3 @@
+com/debricked/sootup/SootUpWrapper$Args.class
+com/debricked/sootup/SootUpWrapper$CallerEntry.class
+com/debricked/sootup/SootUpWrapper.class
diff --git a/examples/callgraph/java-maven-sootup/SootUpWrapper/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst b/examples/callgraph/java-maven-sootup/SootUpWrapper/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
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index 00000000..d22a5d70
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/SootUpWrapper/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
@@ -0,0 +1 @@
+/home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-sootup/SootUpWrapper/src/main/java/com/debricked/sootup/SootUpWrapper.java
diff --git a/examples/callgraph/java-maven-sootup/SootUpWrapper/target/original-sootup-wrapper-1.0.0.jar b/examples/callgraph/java-maven-sootup/SootUpWrapper/target/original-sootup-wrapper-1.0.0.jar
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diff --git a/examples/callgraph/java-maven-sootup/compare-callgraphs.sh b/examples/callgraph/java-maven-sootup/compare-callgraphs.sh
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index 00000000..ea974ef5
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/compare-callgraphs.sh
@@ -0,0 +1,189 @@
+#!/bin/bash
+# ============================================================
+# compare-callgraphs.sh
+#
+# Compares the Soot v1 (classic) and SootUp v2 callgraph outputs.
+# Handles v1 output in either plain JSON or Debricked's
+# base64+zip post-processed format.
+#
+# Usage:
+#   bash compare-callgraphs.sh [--run-both]
+# ============================================================
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+V1_DIR="$SCRIPT_DIR/../java-maven-minimal"
+V2_DIR="$SCRIPT_DIR"
+
+V1_OUTPUT="$V1_DIR/debricked-call-graph.java"
+V2_OUTPUT="$V2_DIR/debricked-call-graph-sootup.java"
+
+if [ "${1:-}" = "--run-both" ]; then
+    echo "Running Soot v1..."
+    (cd "$V1_DIR" && bash run-callgraph.sh)
+    echo ""
+    echo "Running SootUp v2..."
+    (cd "$V2_DIR" && bash run-callgraph-sootup.sh)
+    echo ""
+fi
+
+if [ ! -f "$V1_OUTPUT" ]; then
+    echo "ERROR: Soot v1 output not found: $V1_OUTPUT"
+    echo "  Run: cd $V1_DIR && bash run-callgraph.sh"
+    exit 1
+fi
+if [ ! -f "$V2_OUTPUT" ]; then
+    echo "ERROR: SootUp v2 output not found: $V2_OUTPUT"
+    echo "  Run: cd $V2_DIR && bash run-callgraph-sootup.sh"
+    exit 1
+fi
+
+python3 - "$V1_OUTPUT" "$V2_OUTPUT" <<'PY'
+import base64, io, json, sys, zipfile
+
+v1_path, v2_path = sys.argv[1], sys.argv[2]
+
+
+def load_callgraph(path):
+    raw = open(path, "rb").read()
+    try:
+        data = json.loads(raw.decode("utf-8", errors="strict"))
+        return data, "json"
+    except Exception:
+        pass
+    text = raw.decode("utf-8", errors="ignore").strip()
+    decoded = base64.b64decode(text)
+    with zipfile.ZipFile(io.BytesIO(decoded), "r") as zf:
+        payload = zf.read(zf.namelist()[0]).decode("utf-8")
+        return json.loads(payload), "base64+zip"
+
+
+def short_sig(sig):
+    """
+    Normalize to a short, package-free signature for cross-format comparison.
+    'com.example.callgraph.App.main(String[])' -> 'App.main(String[])'
+    'App.main(String[])'                        -> 'App.main(String[])'
+    """
+    paren = sig.index("(")
+    before_paren = sig[:paren]
+    parts = before_paren.split(".")
+    # last two parts are ClassName.methodName (drop all package segments)
+    short_method = ".".join(parts[-2:]) if len(parts) >= 2 else before_paren
+    return short_method + sig[paren:]
+
+
+def get_methods(data):
+    return {e[0] for e in data.get("data", []) if isinstance(e, list) and e}
+
+
+def get_user_methods(data):
+    return {
+        e[0] for e in data.get("data", [])
+        if isinstance(e, list) and len(e) > 1 and e[1] is True
+    }
+
+
+def has_edge(data, caller_substr, callee_substr):
+    """Return (found, line_number) searching by substring in both FQN and short form."""
+    for entry in data.get("data", []):
+        if not (isinstance(entry, list) and len(entry) >= 8):
+            continue
+        sig = entry[0]
+        callers_list = entry[7]
+        if callee_substr in sig or callee_substr in short_sig(sig):
+            for c in callers_list:
+                if isinstance(c, list) and len(c) >= 2:
+                    caller_sig = c[0]
+                    if caller_substr in caller_sig or caller_substr in short_sig(caller_sig):
+                        return True, c[1]
+    return False, -1
+
+
+v1, v1_fmt = load_callgraph(v1_path)
+v2, v2_fmt = load_callgraph(v2_path)
+
+v1_all   = get_methods(v1)
+v2_all   = get_methods(v2)
+v1_user  = get_user_methods(v1)
+v2_user  = get_user_methods(v2)
+
+# Normalize to short sigs for cross-format intersection
+v1_user_short = {short_sig(m) for m in v1_user}
+v2_user_short = {short_sig(m) for m in v2_user}
+
+common   = sorted(v1_user_short & v2_user_short)
+only_v1  = sorted(v1_user_short - v2_user_short)
+only_v2  = sorted(v2_user_short - v1_user_short)
+
+print("=" * 64)
+print(" Callgraph Comparison: Soot v1 vs SootUp v2")
+print("=" * 64)
+print()
+print(f"  v1 output format  : {v1_fmt}")
+print(f"  v2 output format  : {v2_fmt}")
+print()
+print(f"  {'Metric':<35}  {'Soot v1':>10}  {'SootUp v2':>10}")
+print(f"  {'-'*35}  {'-'*10}  {'-'*10}")
+print(f"  {'Total methods':<35}  {len(v1_all):>10}  {len(v2_all):>10}")
+print(f"  {'User code methods':<35}  {len(v1_user):>10}  {len(v2_user):>10}")
+print(f"  {'Library/JDK methods':<35}  {len(v1_all)-len(v1_user):>10}  {len(v2_all)-len(v2_user):>10}")
+print()
+
+print("-" * 64)
+print(f" User methods in BOTH ({len(common)})")
+print("-" * 64)
+for m in common:
+    print(f"  ✓  {m}")
+print()
+
+if only_v1:
+    print("-" * 64)
+    print(f" In Soot v1 ONLY ({len(only_v1)})  — missing from SootUp")
+    print("-" * 64)
+    for m in only_v1:
+        print(f"  ✗  {m}")
+    print()
+
+if only_v2:
+    print("-" * 64)
+    print(f" In SootUp v2 ONLY ({len(only_v2)})  — extra vs Soot")
+    print("-" * 64)
+    for m in only_v2:
+        print(f"  ★  {m}")
+    print()
+
+checks = [
+    ("App.main → OrderService.placeOrder",           "App.main",            "OrderService.placeOrder"),
+    ("App.main → LoggerUtil.log",                    "App.main",            "LoggerUtil.log"),
+    ("OrderService.placeOrder → calculateTotal",     "OrderService.placeOrder", "PricingService.calculateTotal"),
+    ("PricingService.calculateTotal → applyDiscount","calculateTotal",      "applyDiscount"),
+    ("LoggerUtil.log → StringUtils.upperCase",       "LoggerUtil.log",      "StringUtils.upperCase"),
+]
+
+print("-" * 64)
+print(" Key call edges")
+print("-" * 64)
+all_ok = True
+for label, caller, callee in checks:
+    ok1, ln1 = has_edge(v1, caller, callee)
+    ok2, ln2 = has_edge(v2, caller, callee)
+    s1 = f"✓ line {ln1}" if ok1 else "✗ MISSING"
+    s2 = f"✓ line {ln2}" if ok2 else "✗ MISSING"
+    match = "=" if ok1 == ok2 else "≠"
+    if not ok1 or not ok2:
+        all_ok = False
+    print(f"  {match}  {label}")
+    print(f"       v1: {s1}   v2: {s2}")
+print()
+
+if all_ok:
+    print("  ✓ All expected edges present in both outputs")
+else:
+    print("  ⚠ Some expected edges differ between outputs")
+print()
+print(f"  v1 output : {v1_path}")
+print(f"  v2 output : {v2_path}")
+print()
+print("  To inspect manually:")
+print(f"    python3 -m json.tool {v2_path} | less")
+PY
diff --git a/examples/callgraph/java-maven-sootup/debricked-call-graph-sootup.java b/examples/callgraph/java-maven-sootup/debricked-call-graph-sootup.java
new file mode 100644
index 00000000..7862c7d1
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/debricked-call-graph-sootup.java
@@ -0,0 +1,13 @@
+{"version":"5","data":[["java.lang.Object.<init>()",false,false,"java.lang.Object","java/lang/Object.java",-1,-1,[["com.example.callgraph.OrderService.<init>(PricingService)",6,"-"],["com.example.callgraph.PricingService.<init>()",3,"-"]]],
+["org.apache.commons.lang3.StringUtils.<clinit>()",false,false,"org.apache.commons.lang3.StringUtils","org/apache/commons/lang3/StringUtils.java",188,-1,[]],
+["com.example.callgraph.LoggerUtil.log(String)",true,false,"com.example.callgraph.LoggerUtil","com/example/callgraph/LoggerUtil.java",10,-1,[["com.example.callgraph.App.main(String[])",9,"-"]]],
+["com.example.callgraph.OrderService.<init>(PricingService)",true,false,"com.example.callgraph.OrderService","com/example/callgraph/OrderService.java",6,-1,[["com.example.callgraph.App.main(String[])",6,"-"]]],
+["com.example.callgraph.App.main(String[])",true,false,"com.example.callgraph.App","com/example/callgraph/App.java",5,-1,[]],
+["com.example.callgraph.PricingService.calculateTotal(int, double)",true,false,"com.example.callgraph.PricingService","com/example/callgraph/PricingService.java",5,-1,[["com.example.callgraph.OrderService.placeOrder(String, int, double)",11,"-"]]],
+["com.example.callgraph.PricingService.<init>()",true,false,"com.example.callgraph.PricingService","com/example/callgraph/PricingService.java",3,-1,[["com.example.callgraph.App.main(String[])",5,"-"]]],
+["sootup.dummy.InvokeDynamic.makeConcatWithConstants(String, int, double)",false,false,"sootup.dummy.InvokeDynamic","sootup/dummy/InvokeDynamic.java",-1,-1,[["com.example.callgraph.OrderService.placeOrder(String, int, double)",12,"-"]]],
+["com.example.callgraph.PricingService.applyDiscount(double)",true,false,"com.example.callgraph.PricingService","com/example/callgraph/PricingService.java",10,-1,[["com.example.callgraph.PricingService.calculateTotal(int, double)",6,"-"]]],
+["sootup.dummy.InvokeDynamic.makeConcatWithConstants(String)",false,false,"sootup.dummy.InvokeDynamic","sootup/dummy/InvokeDynamic.java",-1,-1,[["com.example.callgraph.LoggerUtil.log(String)",11,"-"]]],
+["org.apache.commons.lang3.StringUtils.upperCase(String)",false,false,"org.apache.commons.lang3.StringUtils","org/apache/commons/lang3/StringUtils.java",9345,-1,[["com.example.callgraph.LoggerUtil.log(String)",10,"-"]]],
+["com.example.callgraph.OrderService.placeOrder(String, int, double)",true,false,"com.example.callgraph.OrderService","com/example/callgraph/OrderService.java",11,-1,[["com.example.callgraph.App.main(String[])",8,"-"]]],
+["java.io.PrintStream.println(String)",false,false,"java.io.PrintStream","java/io/PrintStream.java",-1,-1,[["com.example.callgraph.LoggerUtil.log(String)",11,"-"]]]]}
\ No newline at end of file
diff --git a/examples/callgraph/java-maven-sootup/pom.xml b/examples/callgraph/java-maven-sootup/pom.xml
new file mode 100644
index 00000000..b9feaab7
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/pom.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.example.callgraph</groupId>
+    <artifactId>java-maven-sootup</artifactId>
+    <version>1.0.0</version>
+    <name>java-maven-sootup</name>
+    <description>Sample app for SootUp callgraph POC (same as v1, analysed by SootUp instead of Soot)</description>
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.14.0</version>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.11.0</version>
+            </plugin>
+        </plugins>
+    </build>
+</project>
diff --git a/examples/callgraph/java-maven-sootup/run-callgraph-sootup.sh b/examples/callgraph/java-maven-sootup/run-callgraph-sootup.sh
new file mode 100755
index 00000000..9d4fb439
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/run-callgraph-sootup.sh
@@ -0,0 +1,95 @@
+#!/bin/bash
+# ============================================================
+# SootUp Callgraph POC — build & run script
+# v2: Uses SootUp instead of classic Soot (SootWrapper.jar)
+#
+# Steps:
+#   1. Check prerequisites (Java, Maven)
+#   2. Build the sample app  (mvn package)
+#   3. Copy dependencies     (mvn dependency:copy-dependencies)
+#   4. Build SootUpWrapper   (mvn package in SootUpWrapper/)
+#   5. Run SootUpWrapper.jar directly via java -jar
+#   6. Verify output
+# ============================================================
+set -e
+SAMPLE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SAMPLE_DIR"
+ALGORITHM="${1:-rta}"   # Pass "cha" as first arg to use CHA instead of RTA
+echo "============================================================"
+echo " SootUp Callgraph POC  (v2)"
+echo " Algorithm: ${ALGORITHM^^}"
+echo "============================================================"
+echo ""
+# ── Step 1: Prerequisites ──────────────────────────────────────
+echo "[1/5] Checking prerequisites..."
+if ! command -v java &>/dev/null; then
+    echo "ERROR: Java not found. Install Java 11+."
+    exit 1
+fi
+JAVA_VER=$(java -version 2>&1 | head -1)
+echo "  Java : $JAVA_VER"
+if ! command -v mvn &>/dev/null; then
+    echo "ERROR: Maven not found."
+    exit 1
+fi
+MVN_VER=$(mvn --version 2>&1 | head -1)
+echo "  Maven: $MVN_VER"
+echo ""
+# ── Step 2: Build the sample app ──────────────────────────────
+echo "[2/5] Building sample app (mvn package)..."
+mvn package -q -DskipTests
+echo "  ✓ Compiled → target/classes/"
+echo ""
+# ── Step 3: Copy runtime dependencies ─────────────────────────
+echo "[3/5] Copying runtime dependencies..."
+if [ ! -d ".debrickedTmpFolder" ]; then
+    mvn -q -B dependency:copy-dependencies \
+        -DoutputDirectory=./.debrickedTmpFolder \
+        -DskipTests
+    echo "  ✓ Dependencies → .debrickedTmpFolder/"
+else
+    echo "  ✓ .debrickedTmpFolder/ already present (skipping)"
+fi
+echo ""
+# ── Step 4: Build SootUpWrapper fat JAR ───────────────────────
+echo "[4/5] Building SootUpWrapper.jar..."
+WRAPPER_DIR="$SAMPLE_DIR/SootUpWrapper"
+WRAPPER_JAR="$WRAPPER_DIR/target/sootup-wrapper-1.0.0.jar"
+if [ ! -f "$WRAPPER_JAR" ] || [ "$FORCE_REBUILD" = "1" ]; then
+    (cd "$WRAPPER_DIR" && mvn package -q -DskipTests)
+    echo "  ✓ Built → SootUpWrapper/target/sootup-wrapper-1.0.0.jar"
+else
+    echo "  ✓ SootUpWrapper.jar already built (set FORCE_REBUILD=1 to rebuild)"
+fi
+echo ""
+# ── Step 5: Run SootUpWrapper ──────────────────────────────────
+echo "[5/5] Running callgraph generation with SootUp ($ALGORITHM)..."
+OUTPUT_FILE="debricked-call-graph-sootup.java"
+java -jar "$WRAPPER_JAR" \
+    -u "$SAMPLE_DIR/target/classes" \
+    -l "$SAMPLE_DIR/.debrickedTmpFolder" \
+    -f "$SAMPLE_DIR/$OUTPUT_FILE" \
+    -a "$ALGORITHM"
+echo ""
+# ── Verify output ──────────────────────────────────────────────
+echo "============================================================"
+echo " Results"
+echo "============================================================"
+if [ -f "$OUTPUT_FILE" ]; then
+    SIZE=$(wc -c < "$OUTPUT_FILE")
+    METHODS=$(grep -o '\[' "$OUTPUT_FILE" | wc -l)
+    echo "  ✓ Output: $OUTPUT_FILE"
+    echo "    Size   : ${SIZE} bytes"
+    echo ""
+    echo "  First 300 chars:"
+    head -c 300 "$OUTPUT_FILE" | sed 's/^/    /'
+    echo ""
+else
+    echo "  ✗ Output file not found: $OUTPUT_FILE"
+    exit 1
+fi
+echo ""
+echo "  ✓ SootUp callgraph generation complete!"
+echo ""
+echo "  Compare with Soot v1 output:"
+echo "    bash compare-callgraphs.sh"
diff --git a/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/App.java b/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/App.java
new file mode 100644
index 00000000..a9804566
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/App.java
@@ -0,0 +1,12 @@
+package com.example.callgraph;
+
+public class App {
+    public static void main(String[] args) {
+        PricingService pricingService = new PricingService();
+        OrderService orderService = new OrderService(pricingService);
+
+        String confirmation = orderService.placeOrder("book", 2, 24.99);
+        LoggerUtil.log(confirmation);
+    }
+}
+
diff --git a/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/LoggerUtil.java b/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/LoggerUtil.java
new file mode 100644
index 00000000..8c525e64
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/LoggerUtil.java
@@ -0,0 +1,14 @@
+package com.example.callgraph;
+
+import org.apache.commons.lang3.StringUtils;
+
+public final class LoggerUtil {
+    private LoggerUtil() {
+    }
+
+    public static void log(String message) {
+        String normalized = StringUtils.upperCase(message);
+        System.out.println("[APP] " + normalized);
+    }
+}
+
diff --git a/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/OrderService.java b/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/OrderService.java
new file mode 100644
index 00000000..80786c81
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/OrderService.java
@@ -0,0 +1,15 @@
+package com.example.callgraph;
+
+public class OrderService {
+    private final PricingService pricingService;
+
+    public OrderService(PricingService pricingService) {
+        this.pricingService = pricingService;
+    }
+
+    public String placeOrder(String item, int quantity, double unitPrice) {
+        double total = pricingService.calculateTotal(quantity, unitPrice);
+        return "Order placed: " + item + " x" + quantity + " total=" + total;
+    }
+}
+
diff --git a/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/PricingService.java b/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/PricingService.java
new file mode 100644
index 00000000..12c5e5d0
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/PricingService.java
@@ -0,0 +1,16 @@
+package com.example.callgraph;
+
+public class PricingService {
+    public double calculateTotal(int quantity, double unitPrice) {
+        double subtotal = quantity * unitPrice;
+        return applyDiscount(subtotal);
+    }
+
+    private double applyDiscount(double subtotal) {
+        if (subtotal >= 50.0) {
+            return subtotal * 0.9;
+        }
+        return subtotal;
+    }
+}
+
diff --git a/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/App.class b/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/App.class
new file mode 100644
index 00000000..1633e626
Binary files /dev/null and b/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/App.class differ
diff --git a/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/LoggerUtil.class b/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/LoggerUtil.class
new file mode 100644
index 00000000..2d5cb8f1
Binary files /dev/null and b/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/LoggerUtil.class differ
diff --git a/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/OrderService.class b/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/OrderService.class
new file mode 100644
index 00000000..3adc5865
Binary files /dev/null and b/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/OrderService.class differ
diff --git a/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/PricingService.class b/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/PricingService.class
new file mode 100644
index 00000000..b973bc2f
Binary files /dev/null and b/examples/callgraph/java-maven-sootup/target/classes/com/example/callgraph/PricingService.class differ
diff --git a/examples/callgraph/java-maven-sootup/target/java-maven-sootup-1.0.0.jar b/examples/callgraph/java-maven-sootup/target/java-maven-sootup-1.0.0.jar
new file mode 100644
index 00000000..b17e4a40
Binary files /dev/null and b/examples/callgraph/java-maven-sootup/target/java-maven-sootup-1.0.0.jar differ
diff --git a/examples/callgraph/java-maven-sootup/target/maven-archiver/pom.properties b/examples/callgraph/java-maven-sootup/target/maven-archiver/pom.properties
new file mode 100644
index 00000000..79e11bda
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/target/maven-archiver/pom.properties
@@ -0,0 +1,5 @@
+#Generated by Maven
+#Thu May 14 05:01:50 UTC 2026
+groupId=com.example.callgraph
+artifactId=java-maven-sootup
+version=1.0.0
diff --git a/examples/callgraph/java-maven-sootup/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst b/examples/callgraph/java-maven-sootup/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
new file mode 100644
index 00000000..a2915011
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
@@ -0,0 +1,4 @@
+com/example/callgraph/LoggerUtil.class
+com/example/callgraph/PricingService.class
+com/example/callgraph/App.class
+com/example/callgraph/OrderService.class
diff --git a/examples/callgraph/java-maven-sootup/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst b/examples/callgraph/java-maven-sootup/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
new file mode 100644
index 00000000..c7a0de07
--- /dev/null
+++ b/examples/callgraph/java-maven-sootup/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
@@ -0,0 +1,4 @@
+/home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/PricingService.java
+/home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/OrderService.java
+/home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/LoggerUtil.java
+/home/dritthi/projects/debricked-projects/cli/examples/callgraph/java-maven-sootup/src/main/java/com/example/callgraph/App.java
diff --git a/internal/callgraph/language/java/soot_handler_component_test.go b/internal/callgraph/language/java/soot_handler_component_test.go
new file mode 100644
index 00000000..48cf7a3b
--- /dev/null
+++ b/internal/callgraph/language/java/soot_handler_component_test.go
@@ -0,0 +1,58 @@
+package java
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	ioTestData "github.com/debricked/cli/internal/io/testdata"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSootHandlerComponent_GetSootWrapperInvalidVersionString(t *testing.T) {
+	h := SootHandler{}
+	_, err := h.GetSootWrapper("not-a-number", ioTestData.FileSystemMock{}, ioTestData.ArchiveMock{})
+	assert.EqualError(t, err, "could not convert version to int")
+}
+
+func TestSootHandlerComponent_GetSootWrapperUnsupportedJavaVersion(t *testing.T) {
+	h := SootHandler{}
+	_, err := h.GetSootWrapper("8", ioTestData.FileSystemMock{}, ioTestData.ArchiveMock{})
+	assert.EqualError(t, err, "lowest supported version for running callgraph generation is 11")
+}
+
+func TestSootHandlerComponent_GetSootWrapperMkdirError(t *testing.T) {
+	h := SootHandler{}
+	fsMock := ioTestData.FileSystemMock{
+		StatError:      fmt.Errorf("missing"),
+		IsNotExistBool: true,
+		MkdirError:     fmt.Errorf("mkdir failed"),
+	}
+
+	_, err := h.GetSootWrapper("11", fsMock, ioTestData.ArchiveMock{})
+	assert.EqualError(t, err, "mkdir failed")
+}
+
+func TestSootHandlerComponent_GetSootWrapperVersion21UsesEmbeddedJar(t *testing.T) {
+	h := SootHandler{}
+	fsMock := ioTestData.FileSystemMock{
+		StatError:      fmt.Errorf("missing"),
+		IsNotExistBool: true,
+	}
+
+	p, err := h.GetSootWrapper("21", fsMock, ioTestData.ArchiveMock{})
+	assert.NoError(t, err)
+	assert.NotEmpty(t, p)
+	assert.True(t, strings.HasSuffix(filepath.ToSlash(p), "/.debricked/SootWrapper.jar"))
+}
+
+func TestSootHandlerComponent_GetSootWrapperReturnsExistingPath(t *testing.T) {
+	h := SootHandler{}
+	fsMock := ioTestData.FileSystemMock{}
+
+	p, err := h.GetSootWrapper("17", fsMock, ioTestData.ArchiveMock{})
+	assert.NoError(t, err)
+	assert.True(t, strings.HasSuffix(filepath.ToSlash(p), "/.debricked/soot-wrapper.jar"))
+}
+