How to attach libraries to JAR file?

Question

It works fine when compiling project, but after exporting it to a runnable jar and launching, it can't find external files and throws an error. What should I do?

Answer 1

You could attempt building a fat jar that includes all the jars. It contains a custom class loader to load the jars referenced externally by your project.

Try using http://fjep.sourceforge.net/ plugin to build a fat jar.

You can export a java project containing jars using the File -> Export -> Other -> One Jar Exporter.

The jar thus exported works fine.