创建一个线程

1.示例

 /**
 * java线程类也是一个object类，他的实例都继承自java.lang.Thread或其子类
 * Thread thread = new Thread();
 * thread.start();
 * @author user
 *
 */
public class CreateAThread {
public static void main(String[] args) {
    //启动第一个线程 
    FirstThred th = new FirstThred();
    th.start();
    System.out.println(th.currentThread());
    System.out.println(th.currentThread().getName());
    
    //创建一个Thread的匿名子类 
    Thread thread = new Thread() {
        public void run() {
            System.out.println("Thread is run");
        }
    };
    thread.start();
    System.out.println(thread.currentThread());
    
    //启动第二个线程  为了使线程能够执行run方法,需要在Thread类的构造函数中传入SecondThread的实例对象
    Thread tht = new Thread(new SecondThread());
    tht.start();
    System.out.println(th.currentThread());
    
    //创建一个实现了Runnable接口的匿名类 
    Runnable myRunnable = new Runnable() {
        public void run() {
            System.out.println("Runnable is run");
        }
    };
    Thread tt = new Thread(myRunnable);
    tt.start();
    System.out.println(tt.currentThread());
    
}
}
//在类中创建一个线程 1
class FirstThred extends Thread{
public void run() {
 System.out.println("Firest Thread is Running");    
}
}
//在类中创建一个线程 2
class SecondThread implements Runnable{
public void run() {
 System.out.println("Second Thread is Running");        
}
}