How to print the line nuber that caused an exception in Java

Question

http://www.salesforce.com/us/developer/docs/apexcode/Content/apex_classes_exception_methods.htm#exception_common_methods This site shows that getLineNumber was included, but I am not able to use it. Thanks

( I am trying to locate a Null Pointer Exception )

score 5 · Answer 1 · answered Jan 16 '14 at 14:08

5

a NullPointerException stack trace includes a line number, so the exception should print it.

answered Jan 16 '14 at 14:08

Ross Drew

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actually there was a java tag there when I answered, that you then removed. – Ross Drew Jan 16 '14 at 14:15
actually Mr. Link edited the tags but I agree ;) And fundamentally the answer is correct also in apex world. – eyescream Jan 16 '14 at 20:36

score 0 · Answer 2 · answered Jan 16 '14 at 20:35

It's unclear what you're asking, please show some code.

getLineNumber() and getStackTraceString() should include the line number (among others). Check https://developer.salesforce.com/forums?id=906F00000008xc4IAA for sample message.

As for "how to print" - there's a try-catch example. Either simply push it at System.debug() or (if it's visualforce context) you can add a pagemessage.

You can also go to setup -> debug log, attach the tracking to your user and retry the action? You'll see the stacktrace and other goodies, line numbers next to the names of called methods...

How to print the line nuber that caused an exception in Java

2 Answers2