Exception in thread "main" java.lang.NoClassDefFoundError: javax/comm/Unsupporte
dCommOperationException
at test.<init>(test.java:25)
at test.main(test.java:49)
请问这是什么错误?急在线等
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在线等 我的应用程序编译成功了:为何执行时有错
Exception in thread "main" java.lang.NoClassDefFoundError: javax/comm/Unsupporte dCommOperationException at test.(test.java:25) at test.main(test.java:49) 请问这是什么错误?急在线等
I once encounted the same problem such as you met.
you might have used the other package for example ,javax...
when you execute the class ,you should use "-cp" to set the path