One: To add the user library to the Eclispe:
1. Click on Eclipse's Window menu and choose "Preference"
2. Select Java->user Libraries in the Preferences window and click New on the right side of the window ... button, enter the name of the user library gamelibs in the child window that pops up.
3. Add a jar package to the user library. Select Gamelibs, then click Add JARS ... button, select the jar you want to add.
Second: Manually create the user Library
1, create the corresponding contrib Java project. Add libs file, put Gameengine.jar package in file
2. Create gamelibs.userlibraries file under Contrib project
<?xml version= "1.0" encoding= "UTF-8" standalone= "no"?>
<eclipse-userlibraries version= "2" >
<library name= "Gamelibs" systemlibrary= "false" >
<archive path= "/contrib/libs/gameengine.jar" source= "/contrib/libs/src"/>
</library>
</eclipse-userlibraries>
3, in the use of the project, in the Preferences window to select Java->user libraries, import gamelibs.userlibraries file.
4, add the development package, only need to gamelibs.userlibraries add on it, the source attribute optional, you can remove