手动创建线程池+自定义拒绝策略

        try {
            ThreadFactory tycThreadFactory = new ThreadFactoryBuilder().setNamePrefix("tyc-call-inf").build();
            //拒绝策略，超过线程数+队列数也添加至队列，不丢弃
            RejectedExecutionHandler rejectedExecutionHandler = new RejectedExecutionHandler() {
                @Override
                public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
                    if (!executor.isShutdown()) {
                        try {
                            executor.getQueue().put(r);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    }
                }
            };

            ThreadPoolExecutor executor = new ThreadPoolExecutor(
                    5,//核心线程
                    12,//最大线程
                    60,
                    TimeUnit.SECONDS,
                    new LinkedBlockingQueue<>(1024),
                    tycThreadFactory,
                    rejectedExecutionHandler);
            int taskSize=1000;

            for (int i = 0; i < taskSize; i++) {
                //传入一个继承Thread的线程主类
                executor.execute(new ExtendsThread());
            }
            // 关闭线程池
            executor.shutdown();
            executor.awaitTermination(1000L, TimeUnit.SECONDS);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }