synchronized使用

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我是靠谱客的博主虚拟曲奇，这篇文章主要介绍synchronized使用，现在分享给大家，希望可以做个参考。

1、synchronized方法：

（1）非static方法相当于对当前对象加锁，不同对象互相不影响,同一对象的不同synchronized方法也使用同一个锁；

（2）静态同步方法 public static synchronized void funa(String s) ：相当于对整个类加锁，所有对象使用同一个锁。与对象锁不影响

复制代码

public class SyncTest {
	public static void main(String[] args) {
		Sync sync1 = new Sync();
		Sync sync2 = new Sync();
		new Thread(new Runnable() {
			@Override
			public void run() {
				sync1.funa("Thread1");
			}
		}).start();
		new Thread(new Runnable() {
			@Override
			public void run() {
				sync1.funb("Thread2");
			}
		}).start();
	}
    static class Sync {
		public static synchronized void funa(String s) {
			for (int i = 0; i < 100; i++) {
				System.out.println(s + " AA " + i);
			}
		}

public synchronized void funb(String s) {
			for (int i = 0; i < 10; i++) {
				System.out.println(s + " BBBBBB " + i);
			}
		}

public void func(String s) {
			synchronized (this) {
				for (int i = 0; i < 100; i++) {
					System.out.println(s + " AA " + i);
				}

}
        public void func(String s) {
			synchronized (this) {
				for (int i = 0; i < 100; i++) {
					System.out.println(s + " AA " + i);
					try {
						Thread.sleep(1000);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}

}
		}
		Object o = new Object();

public void fund(String s) {
			synchronized (o) {

for (int i = 0; i < 10; i++) {
					System.out.println(s + " BBBBBB " + i);
				}
			}
		}
    }
}

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public class SyncTest {
	public static void main(String[] args) {
		Sync sync1 = new Sync();
		Sync sync2 = new Sync();
		new Thread(new Runnable() {
			@Override
			public void run() {
				sync1.funa("Thread1");
			}
		}).start();
		new Thread(new Runnable() {
			@Override
			public void run() {
				sync1.funb("Thread2");
			}
		}).start();
	}
    static class Sync {
		public static synchronized void funa(String s) {
			for (int i = 0; i < 100; i++) {
				System.out.println(s + " AA " + i);
			}
		}

		public synchronized void funb(String s) {
			for (int i = 0; i < 10; i++) {
				System.out.println(s + " BBBBBB " + i);
			}
		}

		public void func(String s) {
			synchronized (this) {
				for (int i = 0; i < 100; i++) {
					System.out.println(s + " AA " + i);
				}

			}
        public void func(String s) {
			synchronized (this) {
				for (int i = 0; i < 100; i++) {
					System.out.println(s + " AA " + i);
					try {
						Thread.sleep(1000);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}

			}
		}
		Object o = new Object();

		public void fund(String s) {
			synchronized (o) {

				for (int i = 0; i < 10; i++) {
					System.out.println(s + " BBBBBB " + i);
				}
			}
		}
    }
}