我可以偷看BufferedReader吗？ [英] Can I peek on a BufferedReader?

问题描述

有没有办法检查在 BufferedReader 对象是否需要阅读？像C ++ cin.peek（）之类的东西。谢谢。

Is there a way to check if in BufferedReader object is something to read? Something like C++ cin.peek(). Thanks.

推荐答案

您可以尝试boolean ready（）方法。
来自Java 6 API doc：如果缓冲区不为空，或者基础字符流已准备好，则缓冲字符流已准备好。

You can try the "boolean ready()" method. From the Java 6 API doc: "A buffered character stream is ready if the buffer is not empty, or if the underlying character stream is ready."

BufferedReader r = new BufferedReader(reader);
if(r.ready())
{
   r.read();
}

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