线程创建和运行

public class ThreadTest1 extends Thread{
    public void run(){
        System.out.println("线程1");
    }
}

public class ThreadTest2 extends Thread{
    public void run(){
        System.out.println("线程2");
    }
}

public class RunnableTest implements Runnable{
    @Override
    public void run() {
        System.out.println("实现runnable接口");
    }
}

public class Test {
    public static void main(String[] args) {
        for (int i = 1; i <= 10; i++) {
            ThreadTest1 threadTest1 = new ThreadTest1();
            threadTest1 .start();
            ThreadTest2 threadTest2 = new ThreadTest2();
            threadTest2 .start();
            RunnableTest runnableTest= new RunnableTest();
            runnableTest.run();
        }
    }
}