void deleteDirectory(File dirPath) {
		File files[] = dirPath.listFiles();
		for (File file : files) {
			if (file.isFile()) {
				file.delete();
			} else {
				String ft[] = file.list();
				if (ft.length == 0) {
					file.delete();
				} else {
					this.deleteDirectory(file);
				}
			}
		}
		dirPath.delete();
	}