Here you can find the source of deleteDir(File dir)
public static boolean deleteDir(File dir)
//package com.java2s; import java.io.File; import java.util.ArrayList; import java.util.List; public class Main { public static boolean deleteDir(File dir) { if (dir.isDirectory()) { String[] children = dir.list(); for (int i = 0; i < children.length; i++) { boolean success = deleteDir(new File(dir, children[i])); if (!success) { return false; }// w ww . jav a 2 s .c o m } } // The directory is now empty so delete it return dir.delete(); } public static List list(Object... objs) { return toList(objs); } public static List toList(Object... objs) { List result = new ArrayList(); for (int i = 0; i < objs.length; i++) { result.add(objs[i]); } return result; } }