Java多线程 同步方法 synchronized

非静态同步函数的锁是:this
静态的同步函数的锁是:字节码对象

class Print2{
	
	/*
	 * 非静态同步函数的锁是:this
	 */
	
	public  void print1(){
		
		synchronized (this) {
			System.out.print("黑");
			System.out.print("马");
			System.out.print("程");
			System.out.print("序");
			System.out.print("员");
			System.out.print("\r\n");
		}

	}
	
	public  synchronized void print2(){
		
			System.out.print("传");
			System.out.print("智");
			System.out.print("播");
			System.out.print("客");
			System.out.print("\r\n");
	}
}

class Print2{
	
	/*
	 * 静态的同步函数的锁是:字节码对象
	 */
	
	public static void print1(){
		
		synchronized (Print2.class) {
			System.out.print("黑");
			System.out.print("马");
			System.out.print("程");
			System.out.print("序");
			System.out.print("员");
			System.out.print("\r\n");
		}

	}
	
	public static synchronized void print2(){
		
			System.out.print("传");
			System.out.print("智");
			System.out.print("播");
			System.out.print("客");
			System.out.print("\r\n");
	}
}

main方法

public class Demo013 {

	public static void main(String[] args) {
		
		Print2 print = new Print2();
		Thread t1 = new Thread(){
			@Override
			public void run() {
				for(int i=1;i<=100;i++){
					print.print1();
				}
			}
		};
		
		Thread t2 = new Thread(){
			@Override
			public void run() {
				for(int i=1;i<=100;i++){
					print.print2();

				}
			}
		};
		
		t1.start();
		t2.start();
	}

}