为资源类编写 use {@code try}-with-resources constructions

  @Test
    public  void cloneTest() {
        /**use {@code try}-with-resources constructions**/
        try(ObjAutoCloneable lock =new ObjAutoCloneable()){
            //放置
        }catch (Exception e){

        }
    }
    
    class  ObjAutoCloneable implements AutoCloseable{

        @Override
        public void close() throws Exception {
            System.out.println("这里放置关闭资源的方法");
        }
    }