线程常用的方法

public class MyRunner3 extends Thread {
	@Override
	public void run() {
		for(int i = 0; i < 5; i++){
			System.out.println("i am " + getName());
			try {
				sleep(1000);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
}

public class TestThread3 {
	public static void main(String[] args) {
		Thread thread = new MyRunner3();
		thread.start();
		try {
			//主线程等待thread的业务处理完了之后再向下运行
			//thread和主线程合并了
			thread.join();
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		for(int i = 0; i < 100; i++){
			System.out.println("main : " + i);
		}
	}
}

 

public class MyRunner4 extends Thread {
	@Override
	public void run() {
		for(int i = 0; i < 100; i++){
			System.out.println(getName() + " : " + i);
			if(i%10 == 0){
				System.out.println("ok");
				yield();
			}
		}
	}
}

public class TestThread4 {
	public static void main(String[] args) {
		Thread t1 = new MyRunner4();
		Thread t2 = new MyRunner4();
		t1.start();
		t2.start();
	}
}

 

线程的优先级用数字表示，范围从1到10，默认的是为5
优先级设置高了之后，获取CPU运行时间片要多一些，具体执行多少时间由操作系统决定

 

public class MyRunner5 extends Thread {
	@Override
	public void run() {
		for(int i = 0; i < 1000; i++){
			System.out.println(getName() + " : " + i);
		}
	}
}

public class TestThread5 {
	public static void main(String[] args) {
		Thread t1 = new MyRunner5();
		Thread t2 = new MyRunner5();
		t2.setPriority(Thread.NORM_PRIORITY+3);
		t1.start();
		t2.start();
	}
}