输入目录，清除目录下的class文件

import java.io.*;import javax.swing.*;public class Delete{public static void main(String[] args)throws Exception{String path = JOptionPane.showInputDialog(null,"请输入您要清理垃圾的目录：");File[] fs = new File(path).listFiles(new FilenameFilter(){public boolean accept(File dir,String name){return name.toLowerCase().endsWith(".class");}});for(File f:fs)f.delete();}}