How can I debug a NullPointerException in Java?
An example of an AI chatbot conversation about debugging Java errors.
How can I debug a NullPointerException in Java?
A NullPointerException occurs when you try to use an object reference that has not been initialized. First, check the line number in the stack trace.
What should I look for in the stack trace?
Look for the method where the exception occurred and check which object is null. You can add print statements to trace the values.
Can you give me an example of how to add print statements?
Sure! You can add a print statement before the line that throws the exception, like this: System.out.println(myObject); to see if it's null.
What if I can't find the null object?
If you can't find it, consider using a debugger to step through your code and inspect the variables at runtime.
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