public class Test5 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		delete(new File("D:/a"));
	}
//使用遞迴，判斷如果是目錄的話，就再執行此方法
	public static void delete(File f) {
		//System.out.println(f);
		if(f.isDirectory()){
			File[] files = f.listFiles();
			for (File file : files) {
				delete(file);
				file.delete();
			}
		}
		f.delete();
	}
}