问与draw9patch的问题

EN

可能重复：

Android draw9patch throws NoClassDefFoundError

draw9path是一个编辑9补丁文件的工具.效果很好。但是，在最近的SDK更新之后，我无法再次运行draw9patch，错误消息是:任何帮助都将是非常感谢的。

线程“AWT 0”中的异常:org/j桌面/SwingWorker/SwingWorker at com.android.draw9patch.Application$1.run(Application.java:48) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java：java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) at : java.lang.ClassNotFoundException: org.jdesktop.swingworker.SwingWorker at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) java.net.URLClassLoader.findClass(URLClassLoader.java:190) at sun.misc.Launcher$ExtClassLoader.findClass(在java.lang.ClassLoader.loadClass(ClassLoader.java:307) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) .再来9次