6个状态定义:java.lang.Thread.State
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Thread thread1 = new Thread(new Runnable() {
@Override
public void run() {
System.out.println("thread1当前状态:" + Thread.currentThread().getState().toString());
System.out.println("thread1 执行了");
}
});
System.out.println("没调用start方法,thread1当前状态:" + thread1.getState().toString());
thread1.start();
Thread.sleep(2000L); // 等待thread1执行结束,再看状态
System.out.println("等待两秒,再看thread1当前状态:" + thread1.getState().toString());
Thread thread2 = new Thread(new Runnable() {
@Override
public void run() {
try {// 将线程2移动到等待状态,1500后自动唤醒
Thread.sleep(1500);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("thread2当前状态:" + Thread.currentThread().getState().toString());
System.out.println("thread2 执行了");
}
});
System.out.println("没调用start方法,thread2当前状态:" + thread2.getState().toString());
thread2.start();
System.out.println("调用start方法,thread2当前状态:" + thread2.getState().toString());
Thread.sleep(200L); // 等待200毫秒,再看状态
System.out.println("等待200毫秒,再看thread2当前状态:" + thread2.getState().toString());
Thread.sleep(3000L); // 再等待3秒,让thread2执行完毕,再看状态
System.out.println("等待3秒,再看thread2当前状态:" + thread2.getState().toString());
Thread thread3 = new Thread(new Runnable() {
@Override
public void run() {
synchronized (Demo2.class) {
System.out.println("thread3当前状态:" + Thread.currentThread().getState().toString());
System.out.println("thread3 执行了");
}
}
});
synchronized (Demo2.class) {
System.out.println("没调用start方法,thread3当前状态:" + thread3.getState().toString());
thread3.start();
System.out.println("调用start方法,thread3当前状态:" + thread3.getState().toString());
Thread.sleep(200L); // 等待200毫秒,再看状态
System.out.println("等待200毫秒,再看thread3当前状态:" + thread3.getState().toString());
}
Thread.sleep(3000L); // 再等待3秒,让thread3执行完毕,再看状态
System.out.println("等待3秒,让thread3抢到锁,再看thread3当前状态:" + thread3.getState().toString());