两个线程，一个线程输出1，一个线程输出2，循环输出

/** * 两个线程，一个线程输出1，一个线程输出2, *  * @author [e-mail] *  */public class SleepAndWaitThread2 {public static void main(String[] args) {OneThread one = new OneThread();TwoThread two = new TwoThread();one.start();two.start();}}class OneThread extends Thread {@Overridepublic void run() {synchronized (SleepAndWaitThread2.class) {while (true) {System.out.println("1");try {SleepAndWaitThread2.class.wait();} catch (InterruptedException e) {e.printStackTrace();}SleepAndWaitThread2.class.notify();}}}}class TwoThread extends Thread {@Overridepublic void run() {synchronized (SleepAndWaitThread2.class) {while (true) {System.out.println("2");SleepAndWaitThread2.class.notify();try {SleepAndWaitThread2.class.wait();} catch (InterruptedException e) {e.printStackTrace();}}}}}