耐得住寂寞，才能受得住繁华

经过验证，适合Map<People, List<People>>这种类型，当然people要实现序列化 public Object deepClone(Object source ) { //创建流对象 ByteArrayOutputStream bos = null; ObjectOutputStream oos = null; ...

String quality=new String("b"); System.out.println(quality.matches("[abc]"));//true String quality=new String("bc"); System.out.println(quality.matches("[abc]"));//false 由此可知，它只是匹配一个