小编yan*_*yan的帖子

我想在其他线程不再引用时正确关闭Closeable对象.

我写了一些小测试,但是在对象入队后get方法返回null,即poll方法返回没有指示对象的正确Object.

  public static void main(String[] args)
  {
   ReferenceQueue<Closeable> reaped = new ReferenceQueue<Closeable>();
   Closeable s = <SOME CLOSEABLE IMPL>;
   WeakReference<Closeable> ws = new WeakReference<Closeable>(s, reaped);
   s = null;

   System.gc();
   Closeable ro = (Closeable)reaped.poll().get();
   ro.close();
  }

提前致谢.任何帮助将不胜感激.