java web start 意外错误【求助】
java web start 意外错误,
意外异常:java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javaws.Launcher.executeApplication(Unknown Source)
at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
at com.sun.javaws.Launcher.continueLaunch(Unknown Source)
at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: com/jgoodies/plaf/plastic/PlasticLookAndFeel
at com.mit.plm.client.main.FrmLogin.proInit(FrmLogin.java:266)
at com.mit.plm.client.main.FrmLogin.<init>(FrmLogin.java:113)
at com.mit.plm.client.main.FrmLogin.main(FrmLogin.java:532)
... 11 more
这是什么问题啊？怎么解决呢？

------解决方案--------------------
java.lang.NoClassDefFoundError: com/jgoodies/plaf/plastic/PlasticLookAndFeel
这个类没有找到
看看包导入进来木有
------解决方案--------------------
调用目标发现异常 找不到class