SWT, packaging jar

Question

I made simple jar for my java-application (build with SWT). In netbeans it starts normal, as it need to be. But when I'm starting it with java -jar [jarName], I have such error:

java -jar jarname.jar 
Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/swt/widgets/Composite
    at roxed.Main.main(Main.java:15)
Caused by: java.lang.ClassNotFoundException: org.eclipse.swt.widgets.Composite
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    ... 1 more

I have downloaded SWT from http://eclipse.org/swt (linux build), unpacked jar and added this folder to the project.

Could someone to say, why I cannot execute it not from IDE?

score 2 · Answer 1 · answered Mar 28 '11 at 16:44

2

Add swt jars in classpath. Specifically, org.eclipse.swt_x.x.x and org.eclipse.swt.win32.win32.x86_x.x.x. Where x is the version number and you will have to look for linux version and not the win32 as I have shown.

answered Mar 28 '11 at 16:44

Favonius

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CoolBeans · Accepted Answer · 2012-08-07T14:35:01.980

1

UPDATED

The swt.jar needs to be added to the Class-Path entry in the META-INF/MANIFEST.MF file.

You can read more about Java Launcher options on this link.

edited Aug 07 '12 at 14:35

answered Mar 28 '11 at 16:46

CoolBeans

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**java -cp libraries/swt.jar -jar jarname.jar** generates the same error – sdf Mar 28 '11 at 16:59
you probably need to define the full path to swt.jar like `~/../libraries/swt.jar` – CoolBeans Mar 28 '11 at 17:35
-1. He asked a way to add libraries to the classpath located INSIDE a jar – Gabriel Llamas Aug 07 '12 at 13:54
@GabrielLlamas - Since he accepted my answer, I am assuming it helped him. By the way, giving a down vote to an answer after 17 months of acceptance is pretty cool of you to do though. – CoolBeans Aug 07 '12 at 13:57
If the answer is wrong it doesn't matter if it was asked 999 years ago. Full details in Berni's answer. – Gabriel Llamas Aug 07 '12 at 14:00
@GabrielLlamas - I didn't realize that -jar ignored -cp. Fixed the answer. – CoolBeans Aug 07 '12 at 14:35

score 1 · Answer 3 · answered Mar 28 '11 at 18:35

1

Found ... But not exactly. Ported project to eclipse, added all jar-s. And just exported as executable-jar. And it works...

Thanky to all anyway for participation.

answered Mar 28 '11 at 18:35

sdf

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score 1 · Answer 4 · edited May 23 '17 at 11:50

That's true java -cp libraries/swt.jar -jar jarname.jar generates the same error.

This is becouse when using -jar, Java does not use -classpath values.

You have to add libraries to Class-Path section in your manifest inside of a jar package.

For example:

Manifest-Version: 1.0
Main-Class: irisRecognition
Class-Path: ../libs/swt64.jar ../libs/bij.jar

You can find more detailed description in answer here

SWT, packaging jar

4 Answers4