1. 创建 - 线程创建，分配地址
2. runnable - 就绪和运行统称Runnable
3. 阻塞block - 没有拿到资源，synchronize等待
4. 等待waiting - 挂起线程池，或者wait(),需要手动唤醒
5. time waiting - sleep(1000)睡眠的状态，到时间自动唤醒
6. 终止terminated - 结束

 public enum State {
        NEW,
        RUNNABLE,
        BLOCKED,
        WAITING,
        TIMED_WAITING,
        TERMINATED;
    }