删除指定目录下的指定后缀的文件

 1 import java.io.*;
 2 import javax.swing.*;
 3 public class Delete{
 4     public static void main(String[] args)throws Exception{
 5         String target = JOptionPane.showInputDialog(null,"请输入您要清理垃圾的目录：");
 6         File[] fs = new File(target).listFiles(new FilenameFilter(){
 7             public boolean accept(File dir,String name){
 8                 return name.toLowerCase().endsWith(".class");
 9             }
10         });
11         for(File f:fs){
12             f.delete();
13         }
14     }
15 }