What is a Null Pointer ExceptionNullPointerException, and how do I fix it?

Post Locked by Robert Harvey

occurred Aug 26, 2014 at 23:04

Notice added Wiki Answer by Robert Harvey

occurred Aug 26, 2014 at 23:04

Question Unprotected by Robert Harvey

occurred Aug 26, 2014 at 23:04

deleted 24 characters in body; edited title

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edited Aug 26, 2014 at 22:59

Robert Harvey

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What is a java.lang.NullPointerExceptionNull Pointer Exception, and how do I fix it?

What are null pointer exceptionsNull Pointer Exceptions (NullPointerExceptionsjava.lang.NullPointerException) and what causes them?

What methods/tools (cognitive or otherwise) can be used to track down (elicit)determine the cause so that you stop the exception from causing the program to terminate prematurely?

What is a java.lang.NullPointerException, and how do I fix it?

What are null pointer exceptions (NullPointerExceptions) and what causes them?

What methods/tools (cognitive or otherwise) can be used to track down (elicit) the cause so that you stop the exception from causing the program to terminate prematurely?

What is a Null Pointer Exception, and how do I fix it?

What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them?

What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely?

the clause I've removed here seems out of place given that the OP is actually asking in the context of Java, rather than in the broader context of computer programming

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edited Aug 26, 2014 at 20:46

Mark Amery

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What are null pointer exceptions (NullPointerExceptions) and what causes them in the context of computer programming?

What methods/tools (cognitive or otherwise) can be used to track down (elicit) the cause so that you stop the exception from causing the program to terminate prematurely?