Thread thread1=new Thread() {            

            public void run() {
                while(true) {
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(this.getName());
                }               
            }
        };
        thread1.start();
 

或

package thread;

public class demo_1 {
    public static void main(String[] args) {
        cat c=new cat();
        c.start();
    }
}
class cat extends Thread{
    public void run() {
        while(true) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        System.out.println("11111");
    }
    }
}
 

如果是實現runable接口 則需要把對象傳入Thread 後
對象才可調用run啟動線程
dog d=new dog();
Thread t=new Thread(d);
d.run();
即覆蓋實現了Ruable的類d
等價於Thread t=new Thread(new dog().run());

package thread;

public class demo_2 {
    public static void main(String[] args) {
        dog d=new dog();
        Thread t=new Thread(d);
        d.run();
    }
}
class dog implements Runnable{
    public void run() {
        while(true) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        System.out.println("11111");
    }
    }
}
 

創建線程方法