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【Java线程安全】一个简单的多线程程序
發布時間：2024/2/28
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【Java线程安全】一个简单的多线程程序
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安全示例1
同步塊
package cn.hanquan.test;public class HappyTrain {public static void main(String[] args) throws InterruptedException {Count c = new Count();Passenger p1 = new Passenger(c);Passenger p2 = new Passenger(c);Passenger p3 = new Passenger(c);p1.start();p2.start();p3.start();} }class Passenger extends Thread {// extends 繼承類Count count;public Passenger(Count count) {this.count = count;}public void run() {synchronized (count) {count.run();}} }class Count implements Runnable {@Overridepublic void run() {for (int i = 1; i < 6; i++) {try {Thread.sleep(1);} catch (InterruptedException e) {e.printStackTrace();}System.out.println(i);}} }安全示例2
同步方法
package cn.hanquan.test;public class HappyTrain {public static void main(String[] args) throws InterruptedException {Count c = new Count();Passenger p1 = new Passenger(c);Passenger p2 = new Passenger(c);Passenger p3 = new Passenger(c);p1.start();p2.start();p3.start();} }class Passenger extends Thread {// extends 繼承類Count count;public Passenger(Count count) {this.count = count;}public void run() {count.run();} }class Count implements Runnable {@Overridepublic synchronized void run() {for (int i = 1; i < 6; i++) {try {Thread.sleep(1);} catch (InterruptedException e) {e.printStackTrace();}System.out.println(i);}} }總結
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