2.1新建线程

public class 自定义线程创建 {
    public static void main(String[] args) {
        ThreadPoolExecutor threadPoolExecutor=new ThreadPoolExecutor(2,
                5,
                0,
                TimeUnit.SECONDS,
                new ArrayBlockingQueue<Runnable>(2),
                new ThreadFactory() {
                    public Thread newThread(Runnable r) {
                        Thread t=new Thread(r);
                        System.out.println("Creat");
                        return t;
                    }
                },
//                new ThreadPoolExecutor.AbortPolicy());//第一种拒绝策略：直接抛出异常AbortPolicy
                new ThreadPoolExecutor.CallerRunsPolicy());//第二种拒绝策略：新建一个线程
//                new ThreadPoolExecutor.DiscardOldestPolicy());//第三种拒绝策略：在队列里推出一个最早的
//                new ThreadPoolExecutor.DiscardPolicy());//第四种：直接丢弃。
//                new RejectedExecutionHandler() {
//                    public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
//                        System.out.println(Thread.currentThread().getName() + "被抛弃了");
//                        try {
//                            Thread.sleep(2000);
//                        } catch (InterruptedException e) {
//                            e.printStackTrace();
//                        }
//                        System.out.println(Thread.currentThread().getName() + "拒绝成功");
//
//                    }
//                });//第种：直接丢弃。
        for (int i = 0; i < 10; i++) {
            final int finalI = i;
            threadPoolExecutor.execute(new Runnable() {
                public void run() {
                    System.out.println(Thread.currentThread().getName()+"开始"+ finalI);
                    try {
                        Thread.sleep(10000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(Thread.currentThread().getName()+"结束"+ finalI);                }
            });
        }
    }
}