线程基础（二）线程创建

一、创建线程的两种方式
1.继承Thread类，重写run方法

public class MyThread extends Thread {
    private int i = 0;

    @Override
    public void run() {
        for (; i < 10; i++) {
            System.out.println(getName() + "  " + i);
        }
    }
}

2.实现runable接口，重写run方法
2.1.实现runnable即可

public class MyRunnable implements Runnable {
    private int i;

    @Override
    public void run() {
        for (; i < 10; i++) {
            System.out.println(Thread.currentThread().getName() + "  " + i);
        }
    }
}

2.2.实现callabble接口

public class MyCallable implements Callable {

    private int i = 0;

    @Override
    public Object call() throws Exception {
        for (; i < 10; i++) {
            System.out.println(Thread.currentThread().getName() + "  " + i);
        }
        return null;
    }
}

综上main方法

public class KangTest {
    public static void main(String[] args) {
        for (int i = 0; i < 10; i++) {
            Thread thread1 = new MyThread();
            thread1.start();
        }


        for (int i = 0; i < 10; i++) {
            Thread thread = new Thread(new MyRunnable(), "MyRunnable" + i);
            thread.start();
        }

        for (int i = 0; i < 10; i++) {
            FutureTask futureTask = new FutureTask(new MyCallable());
            Thread thread = new Thread(futureTask, "futureTask" + i);
            thread.start();
        }
        
    }
}

二、线程的生命周期
1.线程的状态

2.状态流转

3.线程启动方法源码
Thread#start()源码分析

参考：图灵学院相关教材
参考：https://blog.csdn.net/yangyechi/article/details/88195068