importorg.apache.commons.io.FilenameUtils;publicclassTest{publicstaticvoidmain(String[]args)throwsInterruptedException{System.out.println(FilenameUtils.getExtension("a.zip"));}}如上所示,简单代码中依赖了commons-io.jar包编译命令:javac-cpcommons-io-2.4.jar-d.Test.java编译成功!执行命令:java-cpcommons-io-2.4.jarTest报错:错误:找不到或无法加载主类Test改成指定目录:java-cp.Test报错:Exceptioninthread"main"java.lang.NoClassDefFoundError:org/apache/commons/io/FilenameUtilsatTest.main(Test.java:6)Causedby:java.lang.ClassNotFoundException:org.apache.commons.io.FilenameUtilsatjava.net.URLClassLoader.findClass(UnknownSource)atjava.lang.ClassLoader.loadClass(UnknownSource)atsun.misc.Launcher$AppClassLoader.loadClass(UnknownSource)atjava.lang.ClassLoader.loadClass(UnknownSource)...1more请问是什么原因导致的?
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