Java删除文件、目录及目录下所有文件的方法实例

import java.io.File;public class DeleteDirectory { /** * 删除空目录 * @param dir 将要删除的目录路径 */ private static void doDeleteEmptyDir(String dir) { boolean success = (new File(dir)).delete(); if (success) {  System.out.println("Successfully deleted empty directory: " + dir); } else {  System.out.println("Failed to delete empty directory: " + dir); } } /** * 递归删除目录下的所有文件及子目录下所有文件 * @param dir 将要删除的文件目录 * @return boolean Returns "true" if all deletions were successful. *   If a deletion fails, the method stops attempting to *   delete and returns "false". */ private static boolean deleteDir(File dir) { if (dir.isDirectory()) {  String[] children = dir.list();　　　　　　　//递归删除目录中的子目录下  for (int i=0; i<children.length; i++) {  boolean success = deleteDir(new File(dir, children[i]));  if (!success) {   return false;  }  } } // 目录此时为空，可以删除 return dir.delete(); } /** *测试 */ public static void main(String[] args) { doDeleteEmptyDir("new_dir1"); String newDir2 = "new_dir2"; boolean success = deleteDir(new File(newDir2)); if (success) {  System.out.println("Successfully deleted populated directory: " + newDir2); } else {  System.out.println("Failed to delete populated directory: " + newDir2); }  }}