我如何获得线程程序以打印特定输出 [英] How can I get my threaded program to print specific output

问题描述

我在处理同步Java线程，应用等待和通知时遇到问题.

I am having problem dealing with synchronization java threads, applying wait and notify..

我想弄清楚如何在一个可以交替打印答案的程序中实现这些功能.例如，person1将同时计数1-5和person2，输出应如下所示.

I want to figure out how could I implement these in a program where I can print out the answer alternately.. for example person1 will count numbers 1-5 as well as person2, the output should be like this.

person1 count 1
person2 count 1
person1 count 2
person2 count 2
person1 count 3
person2 count 3
person1 count 4
person2 count 4
person1 count 5
person2 count 5

谢谢大家.

推荐答案

您可以通过两种方式轻松地做到这一点:

You could do this easily in two ways:

1. 使用两个信号量在线程之间传递打印令牌":线程1打印，向信号量A发出信号，等待信号量B然后循环.线程2等待信号量A，进行打印，向信号量B发出信号并循环.

1. Pass a 'print token' between the threads using two semaphores: thread 1 prints, signals semaphore A, waits on semaphore B then loops. Thread 2 waits on semaphore A, prints, signals semaphore B and loops.

编写嵌入式单线程代码.

Write in-line, single-threaded code.

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