import java.io.File;public class DeleteDirectory { /** * 刪除空目錄 * @param dir 將要?jiǎng)h除的目錄路徑 */ 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); } } /** * 遞歸刪除目錄下的所有文件及子目錄下所有文件 * @param dir 將要?jiǎng)h除的文件目錄 * @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();　　　　　　　//遞歸刪除目錄中的子目錄下  for (int i=0; i<children.length; i++) {  boolean success = deleteDir(new File(dir, children[i]));  if (!success) {   return false;  }  } } // 目錄此時(shí)為空，可以刪除 return dir.delete(); } /** *測(cè)試 */ 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); }  }}