如何从标准输入读取非阻塞？ [英] how to read from standard input non-blocking?

问题描述

    long end=System.currentTimeMillis()+60*10;
    InputStreamReader fileInputStream=new InputStreamReader(System.in);
    BufferedReader bufferedReader=new BufferedReader(fileInputStream);
    try
    {
        while((System.currentTimeMillis()<end) && (bufferedReader.readLine()!=null))
        {

        }
        bufferedReader.close();
    }
    catch(java.io.IOException e)
    {
        e.printStackTrace();
    }

我实际上尝试在600毫秒的时间内完成上述操作，之后应该不允许读取，但bufferedreader的readline是阻塞的。请帮助

I actually tried doing the above for reading in 600 miliseconds time after which it should not allow reading but the readline of the bufferedreader is blocking.Please help

推荐答案

您可以查看BufferedReader.available（）> 0如果有要读取的字符。

You could check with BufferedReader.available() > 0 if there are chars to read.

String s;

while((System.currentTimeMillis()<end))
{
    if (bufferedReader.available() > 0)
        s += bufferedReader.readLine();
}

bufferedReader.close();

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