ANDROID.NPE

A NullPointerException is thrown in case of an attempt to dereference a null value. The dereference may be a function call, a read or write of a field, or an array access. An ANDROID.NPE error is reported for Android-specific null pointer dereference situations.

Example 1

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     protected void onCreate(Bundle bundle) {
         super.onCreate(bundle);
         setContentView(R.layout.note_layout);
         final ImageView image = (ImageView) findViewById(R.id.image);
 
         final String title = bundle.getString(TITLE);
         setTitle(title);
     }

ANDROID.NPE is reported for line 22 since 'bundle' might be null in the 'onCreate()' method due to the contract.

Related checkers

• NPE.CONST
• NPE.RET
• NPE.RET.UTIL
• NPE.STAT

External guidance

• CWE-476: NULL Pointer Dereference

Security training

Application security training materials provided by Secure Code Warrior.

• Null Dereference Training Video - Test your skills with a training example

Extension

This checker can be extended through the Klocwork knowledge base. See Tuning Java analysis for more information.