3个线程分别交替输出xyz字符，输出10遍

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3个线程分别交替输出xyz字符，输出10遍

public class XYZ implements Runnable {
    private static AtomicInteger atomicInteger = new AtomicInteger();
    private int index;
    public XYZ(int index) {
        this.index = index;
    }
    public static void main(String[] args) {
        for (int i = 0; i < 3; i++) {
            new Thread(new XYZ(i)).start();
        }
    }
    @Override
    public void run() {
        int i = 0;
        while (i < 10) {
            synchronized (XYZ.class) {
                if (atomicInteger.get() % 3 == this.index) {
                    System.out.print(Character.toString((char) ('x' + index)));
                    i++;
                    atomicInteger.incrementAndGet();
                    //输出最后一个字符的时候换行
                    if (index == 2){
                        System.out.println();
                    }
                }
            }
        }
    }
}

输出效果