java线程说明

//获取线程名字

public class Test {public static void main(String[] args) {System.out.println(Thread.currentThread().getName());}}  

//设置线程名字：

public class MyRunnable implements Runnable{@Overridepublic void run() {System.out.println(Thread.currentThread().getName());}public static void main(String[] args) {MyRunnable r = new MyRunnable();Thread t = new Thread(r);t.setName("线程名字");t.start();}}
//设置线程优先级(注意：以下代码并不能保证t2先出结果)
public class MyRunnable implements Runnable{@Overridepublic void run() {System.out.println(Thread.currentThread().getName());}public static void main(String[] args) {MyRunnable r = new MyRunnable();Thread t = new Thread(r);Thread t2 = new Thread(r);t.setName("线程1");t.setName("线程2");//范围1-10//Thread.MIN_PRIORITY:1//Thread.MAX_PRIORITY:10//Thread.NORM_PRIORITY:5t.setPriority(2);//1-10t2.setPriority(3);t.start();t2.start();}}
//start() run()部分区别
启动线程用start()，会开起一个新的线程；run()只是在当前线程中执行run中的代码，不会新开线程。
public class MyRunnable implements Runnable{@Overridepublic void run() {System.out.println(Thread.currentThread().getName());}public static void main(String[] args) {MyRunnable r = new MyRunnable();Thread t = new Thread(r);t.setName("线程A");t.run();//maint.start();//线程A}}
//yield()
让线程重新争夺cpu,结果可能依然是当前线程先运行。
//使用线程的2中方法：1继承Thread 2实现Runnable。都需要重写其run方法