Java source

[hyrogen]

Hi,

Apologies if this is the wrong forum, as it maybe an ANT issue.

I've created a JAR using ANT, but when I run the JAR I get a NULL pointer exception at an unknown line (?)

Do I have to create the JAR file with a certain parameter or run Java with a certain parameter to find the source code.

The class files and .java files are both in the root of the JAR. I also get the line numbers when running the code through eclipse.

Many thanks!

 

[Ascalonian]

Did you put the main class in the Manifest file? Can you copy the error message in here?

 

[hyrogen]

yeah, the main class is in the manifest and it does begin running the code, it just gets a Null pointer at a certain point and falls over. the error is:

ERROR - MainImport.parseXMLFile(?) | Error:
java.lang.NullPointerException
at importXML.MainImport.parseXMLFile(Unknown Source)

 

[TonHu]

The method needs a filename, and you probably haven't supplied one.

HTH
TonHu

 

[Diancecht]

How did you specify the filename? Relative or absolute path?

Cheers,
Dian

 

[hyrogen]

Ahh, think I got it: I just had to compile Java with debugging enabled:
<javac debug="on" debuglevel="lines, vars, source"

This should be default but for some reason (perhaps eclipses version of ant) I had to do this.

 

[Diancecht]

And that fixes the NullPointer exception?

Cheers,
Dian

 

[hyrogen]

well it didnt fix the null pointer, but it showed me the line number it was on so that I could fix it.
Thanks