用程序实现两个线程交替打印 0~100 的奇偶数

import java.util.Optional;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.SynchronousQueue;

public class CrossPrint {
    private static final int MAX = 100;

    public static void main(String[] args) {
        BlockingQueue<Integer> queue = new SynchronousQueue<>();
        new Thread(new PrintTask("Odd ", queue, true)).start();
        new Thread(new PrintTask("Even", queue, false)).start();
    }

    private static class PrintTask implements Runnable {
        private String name;
        private BlockingQueue<Integer> queue;
        private boolean start;
        private int value = -1;

        PrintTask(String name, BlockingQueue<Integer> queue, boolean start) {
            this.name = name;
            this.queue = queue;
            this.start = start;
        }

        @Override
        public void run() {
            while (value < MAX) {
                try {
                    if (start) {
                        putValue();
                        takeValue();
                    } else {
                        takeValue();
                        putValue();
                    }
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }

        private void putValue() throws InterruptedException {
            queue.put(++value);
        }

        private void takeValue() throws InterruptedException {
            value = queue.take();
            Optional.of(value).filter(it -> it <= MAX)
                    .ifPresent(it -> System.out.println(name + ":" + it));
        }
    }
}