原文URL:http://blog.csdn.net/shijinupc/article/details/7191655
还是先看API
void |
close() Closes this stream and releases any system resources associated with it. |
close
void close()
throws IOException
- Closes this stream and releases any system resources associated with it. If the stream is already closed then invoking this method has no effect.
-
- Throws:
-
IOException- if an I/O error occurs
关闭该流并释放与之关联的所有资源。在关闭该流后，再调用 read()、ready()、mark()、reset() 或 skip() 将抛出 IOException。关闭以前关闭的流无效。
- public void close() throws IOException {
- synchronized (lock) {
- if (in == null)
- return;
- in.close();
- in = null;
- cb = null;
- }
- }
一般情况下是：先打开的后关闭，后打开的先关闭
另一种情况：看依赖关系，如果流a依赖流b，应该先关闭流a，再关闭流b
例如处理流a依赖节点流b，应该先关闭处理流a，再关闭节点流b
当然完全可以只关闭处理流，不用关闭节点流。处理流关闭的时候，会调用其处理的节点流的关闭方法
如果将节点流关闭以后再关闭处理流，会抛出IO异常