问题描述
我有一个Java线程：
I have a Java thread:
class MyThread extends Thread {
@Override
public void run() {
BufferedReader stdin =
new BufferedReader(new InputStreamReader(System.in));
String msg;
try {
while ((msg = stdin.readLine()) != null) {
System.out.println("Got: " + msg);
}
System.out.println("Aborted.");
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
}
在另一个线程中，如何在此线程中中止 stdin.readline（）调用，以便该线程打印中止。？我尝试了 System.in.close（），但这没有任何区别， stdin.readline（）仍在阻止。
In another thread, how do I abort the stdin.readline() call in this thread, so that this thread prints Aborted.? I have tried System.in.close(), but that doesn't make any difference, stdin.readline() is still blocking.
我对没有
- 忙的解决方案感兴趣等待（因为这会烧掉100％的CPU）;
- 睡觉（因为那时程序没有立即响应
System.in） 。
- busy waiting (because that burns 100% CPU);
- sleeping (because then the program doesn't respond instantly to
System.in).
推荐答案
我的第一反应是线程和 System.in 真的不能一起使用。
My first reaction is that a thread and System.in really don't go together.
首先，拆分这个以便线程代码不接触任何静态包括 System.in 。
So first, split this so that the thread code does not touch any static including System.in.
一个线程从读入InputStream 并传入缓冲区。将 InputStream 传递到从缓冲区读取的现有线程中，但也检查您是否未中止。
A thread reads from InputStream and passes into a buffer. Pass an InputStream into your existing thread that reads from the buffer but also checks that you haven't aborted.
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