Merge JAR files from Processing on Mac

Question

Hi I know there are tons of articles about how to merge jars, but my problem is a little different.

I want to use a bash script to merge jar files. All my jar (from Processing) are lying in ./lib Here is what I do:

mkdir tmp FILES=lib/*.jar for T in $FILES; do (cd tmp; jar -xf ../$T) done jar -cfm combined.jar tmp/META-INF/MANIFEST.MF -C tmp .

Of course I get a jar File but it's not really acting like it should.

BTW: I make sure that the jar extracted last is the main applications jar.

It's unclear what you're asking for. Or what making sure "the jar extracted last is the main applications jar" means. — Dave Newton
– Dave Newton, Commented Jan 31, 2013 at 13:48
Because each JAR includes it's own Manifest. As all other JAR are just libraries and not executable I need to make sure to use the right Manifest with the right Main Class. It acts in a way that I doesn't find some of the libraries referenced. — codingjoe
– codingjoe, Commented Jan 31, 2013 at 13:52
@John Not finding classes referenced in other jars means something else is going wrong; at worst the broken manifest would try to run the wrong main. Also, if you don't use an @ reply the person you're responding to may not be notified you've replied. — Dave Newton
– Dave Newton, Commented Jan 31, 2013 at 13:56
I'd use Apache Ant to achieve that. Using native scripts somehow hurts the Java way of coding (even when packaging): "write once, bug, I mean, run everywhere" ;-) — Gilberto Torrezan
– Gilberto Torrezan, Commented Jan 31, 2013 at 13:58

rednoyz · Accepted Answer · 2013-12-17 17:07:50Z

This script works fine for me when I grab ALL the required jars from Processing (2.1 on OSX in my case). Here are the contents of my 'lib' folder before running it:

MySketch.jar core.jar gluegen-rt-natives-macosx-universal.jar gluegen-rt.jar jogl-all-natives-macosx-universal.jar jogl-all.jar

If you use any libraries, you need to include ALL the jars for those as well.

rednoyz good that it works for you. I haven't jumped to Processing 2.1 yet as the OpenGL doesn't work. But I'll try. I have figured out another way tho.

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