NPE check for Password and Account Name field#384
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| new NullPointerException("Password is null"); | ||
| } | ||
| } else { | ||
| new NullPointerException("Account Name does not exist"); |
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You forgot to throw the exception.
Use throw statement.
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And, it is not always meant to throw NullPointerException.
Go for throwing IllegalArgumentException with an informative message.
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Looking at the below Ln:69, it seemed that you don't want to throw the exception if the password is missing.
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This is what I'm thinking:
if accountName is null, you can throw illegal argument exception
but if password is null, I think, you can continue without throwing the exception.
Because, mAccount is set to null, it will be initialized at the Ln:70.
| identifier = new SharedStorageIdentifier(); | ||
| } | ||
| } else { | ||
| throw new IllegalArgumentException("Invalid parameters, Account name cannot be null"); |
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[optional], "Account name cannot be null" is sufficient here.
| //Create the account if it wasn't retrieved, | ||
| if (mAccount == null) { | ||
| sb.append("Account Name:: "+accountName); | ||
| sb.append("Account Type:: "+accountName); |
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Account Type:: "+accountName , this should be accountType.
| for (Account account : accounts) { | ||
| if (accountName.equals(account.name)) { | ||
| if (accountName != null &&accountName.equals(account.name)) { | ||
| String password = mAccountManager.getPassword(account); |
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Do you want to put some logging in this block also.
As later if password does not match, we make mAccount to null, and which eventually will go to the if(mAccount==null) block.
| mAccount = null; | ||
| identifier = new SharedStorageIdentifier(); | ||
| } | ||
| } else { |
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We might be throwing the exception for name mismatch. It's a mistake.
We need to rewrite the logic like below:
accountName is invariant to the loop. Hence, a null check for the accountName should be done outside the for-loop.
if (acoountName == null) {
throw new IllegalArgumentException("Invalid parameters, Account name cannot be null");
}
for (Account account : accounts) {
if (accountName.equals(account.name)) {
}
}
| mAccountManager = AccountManager.get(MAS.getContext()); | ||
| //Attempt to retrieve the account | ||
| Account[] accounts = mAccountManager.getAccountsByType(accountType); | ||
| sb.append("No of accounts:: "+accounts.length); |
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why don't you simply log the details wherever you want!
| @@ -51,27 +58,42 @@ public AccountManagerUtil(Context context, String accountName, boolean sharedSto | |||
| mAccountManager = AccountManager.get(MAS.getContext()); | |||
| //Attempt to retrieve the account | |||
| Account[] accounts = mAccountManager.getAccountsByType(accountType); | |||
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Apply synchronization to the block that consists of the below logic:
synchronized {
- get-accounts
- iterate
- add-account-explicitly
}
| mAccount = null; | ||
| identifier = new SharedStorageIdentifier(); | ||
| messageBuilder.append(" trying account:" + account.name); | ||
| synchronized (this) { |
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Use class-object for synchronization.
synchronization (AccountManagerUtil.class) {
}
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Can I use the object already created (mutex)?
4 participants
We are adding a check for Null Pointer Exception for the Password and Account Name field.