Java中删除文件、删除目录及目录下所有文件

原文转自：http://www.tqcto.com/article/recommend/142.html功能：删除某个目录及目录下的所有子目录和文件知识点：File.delete()用于删除“某个文件或者空目录”！所以要删除某个目录及其中的所有文件和子目录，要进行递归删除，具体代码示例如下：

java.io.File;

  DeleteDirectory {
    
       doDeleteEmptyDir(String dir) {
         success = ( File(dir)).delete();
         (success) {
            System.out.println("Successfully deleted empty directory: " + dir);
        }  {
            System.out.println("Failed to delete empty directory: " + dir);
        }
    }

    
       deleteDir(File dir) {
         (dir.isDirectory()) {
            String[] children = dir.list();
　　　　　　　             ( i=0; i<children.length; i++) {
                 success = deleteDir( File(dir, children[i]));
                 (!success) {
                     ;
                }
            }
        }
                 dir.delete();
    }
    
       main(String[] args) {
        doDeleteEmptyDir("new_dir1");
        String newDir2 = "new_dir2";
         success = deleteDir( File(newDir2));
         (success) {
            System.out.println("Successfully deleted populated directory: " + newDir2);
        }  {
            System.out.println("Failed to delete populated directory: " + newDir2);
        }     
    }
}