Java Exception Handling with additional information

Question

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Java exception handling

In Java, is it possible to print in console the error code line number with error information means:

try {
    // something
} catch(Exception e) {
    // modify this one to print line number of error with additional info
    System.out.println(e);
}

score 9 · Accepted Answer · answered May 01 '12 at 14:11

9

Yep.

catch(Exception e) {
    e.printStackTrace();
}

Or you could simply throw the exception, that'll also get you a stack trace.

answered May 01 '12 at 14:11

Yuka

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score 5 · Answer 2 · answered May 01 '12 at 14:11

5

Just use

e.printStackTrace();

or let the exception bubble up, if you want your program to halt on the exception.

answered May 01 '12 at 14:11

hvgotcodes

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score 4 · Answer 3 · answered May 01 '12 at 14:10

4

You're probably looking for e.printStackTrace().

answered May 01 '12 at 14:10

SLaks

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Brian Agnew · Answer 4 · 2012-05-01T14:27:58.460

3

Note that if you don't want the complete stack trace, the Exception method getStackTrace() gives you an array of StackTraceElements. You can interrogate these for line numbers, file names etc. and generate some custom informative message highlighting the source of the exception.

edited May 01 '12 at 14:27

answered May 01 '12 at 14:11

Brian Agnew

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score 3 · Answer 5 · answered May 01 '12 at 14:12

3

Throwable (which Exception extends) has a method getStackTrace() which returns a StackTraceElement[], each of which includes a method getLineNumber().

So:

e.getStackTrace()[0].getLineNumber()

answered May 01 '12 at 14:12

amaidment

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Java Exception Handling with additional information

5 Answers5