删除指定目录下的指定后缀的文件

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