Java观测线程状态

观测线程状态

观测线程状态：Thread.State 线程终止：Thread.State.TERMINATED

• 线程5个状态

Code

public class StateTest {

    public static void main(String[] args) throws InterruptedException {

        Thread thread = new Thread(() -> { // 线程体

            for (int i = 0; i < 5; i++) {
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                System.out.println("线程体...");
            }
        });

//        观察状态
        Thread.State  state = thread.getState();
        System.out.println(state); // NEW

//        观察启动后
        thread.start(); // 启动线程
        state = thread.getState();
        System.out.println(state); // Runnable

        while (state != Thread.State.TERMINATED){ // 只要线程不终止就一直输出
            Thread.sleep(1000);
            state = thread.getState(); // 更新状态
            System.out.println(state);

        }
    }
}