2017.12.12 java多线程

用Thread的子类创建线程

package work05;//兔子 ---多线程public class Robot extends Thread {public void run() {for (int i = 1; i <= 10; i++) {System.out.println("兔子跑了" + i + "步！");}}}

package work05;//乌龟---多线程public class Torties extends Thread {public void run() {for (int i = 1; i <= 10; i++) {System.out.println("乌龟跑了" + i + "步！");}}}

package work05;public class Demo01 {public static void main(String[] args) {// TODO Auto-generated method stubRobot r = new Robot();r.start();// 在主运行线程上又新产生一个线程Torties t = new Torties();t.start();for (int i = 1; i <= 10; i++) {System.out.println("我跑了" + i + "步！");}}}

用Runnable接口方式创建线程

package work05;public class Robot1 implements Runnable {@Overridepublic void run() {// TODO Auto-generated method stubfor (int i = 1; i <= 10; i++) {System.out.println("兔子跑了" + i + "步！");}}}

package work05;public class Torties1 implements Runnable {@Overridepublic void run() {// TODO Auto-generated method stubfor (int i = 1; i <= 10; i++) {System.out.println("乌龟跑了" + i + "步！");}}}

package work05;public class Demo0101 {public static void main(String[] args) {// TODO Auto-generated method stubRobot1 r1 = new Robot1();Thread r2 = new Thread(r1);r2.start();Torties1 t1 = new Torties1();Thread t2 = new Thread(t1);t2.start();}}

简单的12306售票

package work05;public class Demo12306 implements Runnable {int num = 10;@Overridepublic void run() {// TODO Auto-generated method stubint sum = 0;String list = "";while (true) {if (num <= 0) {break;}try {Thread.sleep(300);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}// 同步锁synchronized (this) {if (num <= 0) {break;}System.out.println(Thread.currentThread().getName() + "抢到了"+ num);list = list + num + ",";num--;sum++;System.out.println(Thread.currentThread().getName() + "抢到了"+ list);System.out.println(Thread.currentThread().getName() + "共抢到了"+ sum+"张票");}}}}

package work05;public class Demo123 {public static void main(String[] args) {// TODO Auto-generated method stubDemo12306 d = new Demo12306();Thread d1 = new Thread(d, "小明");Thread d2 = new Thread(d, "小红");Thread d3 = new Thread(d, "小华");d1.start();d2.start();d3.start();}}