eclipse exej4 生成 exe 时 出现错误 求前辈指点

java.lang.NoClassDefFoundError: org/eclipse/swt/widgets/Composite
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.getDeclaredMethod(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
at com.exe4j.runtime.WinLauncher.main(Unknown Source)

大家帮我看看...
谢谢了

老师的作业,得交的!!!

[此贴子已经被作者于2007-4-22 17:48:42编辑过]