package xufeng.java; public class Printer implements Runnable{ // 输出字符 String printStr = null; // 下一个输出对象 Printer nextPrinter = null; public Printer(String str) { printStr = str; }public void setNextPrinter(Printer nextPr) { nextPrinter = nextPr; }@Override public void run() { for (int i = 0; i < 10; i++) { synchronized (nextPrinter) { try { Thread.sleep(1000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.print(printStr); nextPrinter.notifyAll(); }synchronized (this) { try { this.wait(); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }} }
package xufeng.java;
public class MainTest {
/**
* @param args
* @throws InterruptedException
*/
public static void main(String[] args) throws InterruptedException {
Printer a = new Printer("A");
Printer b = new Printer("B");
Printer c = new Printer("C");
Printer d = new Printer("D");
// 设置前后关系
a.setNextPrinter(b);
b.setNextPrinter(c);
c.setNextPrinter(d);
d.setNextPrinter(a);
// 启动线程。相隔一秒以免初始输出顺序混乱
new Thread(a).start();
Thread.sleep(1000);
new Thread(b).start();
Thread.sleep(1000);
new Thread(c).start();
Thread.sleep(1000);
new Thread(d).start();
}
}【java线程输出ABCD】转载于:https://blog.51cto.com/mk78x/1243447
