中国建设银行积分网站,可以搜索任何网站的浏览器,制作网站找哪个公司好,西丽网站的建设synchronized可以对两种对象加锁#xff1a;实例对象和类对象。下边先说对类对象加锁的代码#xff1a;
第1是修饰static方法#xff0c;第2种是直接锁类的class对象#xff1b;
/*** title: SynchronizedStaticDemo1* description: synchronized 对类加锁1* author: * d…synchronized可以对两种对象加锁实例对象和类对象。下边先说对类对象加锁的代码
第1是修饰static方法第2种是直接锁类的class对象
/*** title: SynchronizedStaticDemo1* description: synchronized 对类加锁1* author: * date: 2023/11/18 19:29*/
public class SynchronizedStaticDemo1 {private static int data 0;public static void main(String[] args) {Thread thread1 new Thread(线程1){Overridepublic void run() {for (int i 0; i 10; i) {increment();}}};thread1.start();Thread thread2 new Thread(线程2){Overridepublic void run() {for (int i 0; i 10; i) {increment();}}};thread2.start();}public synchronized static void increment(){SynchronizedStaticDemo1.data ;System.out.println(SynchronizedStaticDemo1.data Thread.currentThread().getName());}
}
/*** title: SynchronizedStaticDemo2* description: synchronized 对类加锁2* author: * date: 2023/11/18 19:29*/
public class SynchronizedStaticDemo2 {private static int data 0;public static void main(String[] args) {Thread thread1 new Thread(线程1){Overridepublic void run() {for (int i 0; i 10; i) {synchronized (SynchronizedStaticDemo2.class){data ;System.out.println(data Thread.currentThread().getName());}}}};thread1.start();Thread thread2 new Thread(线程2){Overridepublic void run() {for (int i 0; i 10; i) {synchronized (SynchronizedStaticDemo2.class){data ;System.out.println(data Thread.currentThread().getName());}}}};thread2.start();}
}synchronized对某个实例对象加锁如下三种方法
/*** title: SynchronizedInstanceDemo1* description: synchronized修饰实例对象* author: * date: 2023/11/18 19:29*/
public class SynchronizedInstanceDemo1 {private static int data 0;public static void main(String[] args) {SynchronizedInstanceDemo1 demo new SynchronizedInstanceDemo1();Thread thread1 new Thread(线程1){Overridepublic void run() {for (int i 0; i 10; i) {demo.increment();}}};thread1.start();Thread thread2 new Thread(线程2){Overridepublic void run() {for (int i 0; i 10; i) {demo.increment();}}};thread2.start();}public synchronized void increment(){SynchronizedInstanceDemo1.data ;System.out.println(SynchronizedInstanceDemo1.data Thread.currentThread().getName());}
}
/*** title: SynchronizedInstanceDemo2* description: synchronized修饰实例对象* author: * date: 2023/11/18 19:29*/
public class SynchronizedInstanceDemo2 {private static int data 0;public static void main(String[] args) {SynchronizedInstanceDemo2 demo new SynchronizedInstanceDemo2();Thread thread1 new Thread(线程1){Overridepublic void run() {for (int i 0; i 10; i) {synchronized (demo){data ;System.out.println(data Thread.currentThread().getName());}}}};thread1.start();Thread thread2 new Thread(线程2){Overridepublic void run() {for (int i 0; i 10; i) {synchronized (demo){data ;System.out.println(data Thread.currentThread().getName());}}}};thread2.start();}
}
/*** title: SynchronizedInstanceDemo3* description: synchronized修饰实例对象* author: * date: 2023/11/18 19:29*/
public class SynchronizedInstanceDemo3 {private static int data 0;public static void main(String[] args) {SynchronizedInstanceDemo3 demo new SynchronizedInstanceDemo3();Thread thread1 new Thread(线程1){Overridepublic void run() {for (int i 0; i 10; i) {demo.increment();}}};thread1.start();Thread thread2 new Thread(线程2){Overridepublic void run() {for (int i 0; i 10; i) {demo.increment();}}};thread2.start();}public void increment(){synchronized (this){data ;System.out.println(data Thread.currentThread().getName());}}
}
