java 检测线程状态（如何查看java线程状态）

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本文目录一览：

• 1、java获取当前线程状态。
• 2、java 中怎么判断某一线程是否运行
• 3、如何判断java线程是否在运行
• 4、java怎么判断一个线程是否在运行状态

java获取当前线程状态。

java线程的状态有下面几种状态java 检测线程状态：
/**
* Thread state for a thread which has not yet started.
*/
NEW,

/**
* Thread state for a runnable thread. A thread in the runnable
* state is executing in the Java virtual machine but it may
* be waiting for other resources from the operating system
* such as processor.
*/
RUNNABLE,

/**
* Thread state for a thread blocked waiting for a monitor lock.
* A thread in the blocked state is waiting for a monitor lock
* to enter a synchronized block/method or
* reenter a synchronized block/method after calling
* {@link Object#wait() Object.wait}.
*/
BLOCKED,

/**
* Thread state for a waiting thread.
* A thread is in the waiting state due to calling one of the
* following methods:
* <ul
* <li{@link Object#wait() Object.wait} with no timeout</li
* <li{@link #join() Thread.join} with no timeout</li
* <li{@link LockSupport#park() LockSupport.park}</li
* </ul
*
* <pA thread in the waiting state is waiting for another thread to
* perform a particular action.
*
* For example, a thread that has called <ttObject.wait()</tt
* on an object is waiting for another thread to call
* <ttObject.notify()</tt or <ttObject.notifyAll()</tt on
* that object. A thread that has called <ttThread.join()</tt
* is waiting for a specified thread to terminate.
*/
WAITING,

/**
* Thread state for a waiting thread with a specified waiting time.
* A thread is in the timed waiting state due to calling one of
* the following methods with a specified positive waiting time:
* <ul
* <li{@link #sleep Thread.sleep}</li
* <li{@link Object#wait(long) Object.wait} with timeout</li
* <li{@link #join(long) Thread.join} with timeout</li
* <li{@link LockSupport#parkNanos LockSupport.parkNanos}</li
* <li{@link LockSupport#parkUntil LockSupport.parkUntil}</li
* </ul
*/
TIMED_WAITING,
/**
* Thread state for a terminated thread.
* The thread has completed execution.
*/
TERMINATED;

java 中怎么判断某一线程是否运行

可以调用 Thread.isAlive() 判断， 当然也可以设置一个标记， 在那个线程结束之前设置标记。
/**
* Tests if this thread is alive. A thread is alive if it has
* been started and has not yet died.
* @return <codetrue</code if this thread is alive;
* <codefalse</code otherwise.
*/
Thread.isAlive()

如何判断java线程是否在运行

判断是否在运行用isAlive方法哈。。
给你写了个例子。。不知是不是你想要的。。
public class Thread100 {
/**
* @param args
*/
public static ThreadA ta = new ThreadA();
public static ThreadB tb = new ThreadB();
public static void main(String[] args) {
ta.start();
tb.start();
}
}
class ThreadA extends Thread {
@Override
public void run() {
int i = 0;
while(i < 100) {
if(Thread100.tb.isAlive()) {
System.out.println("B is alive");
}
System.out.println(i);
i++;
}
}
}
class ThreadB extends Thread {
@Override
public void run() {
int i = 0;
while(i < 100) {
if(Thread100.ta.isAlive()) {
System.out.println("A is alive");
}
System.out.println(i);
i++;
}
}
}

java怎么判断一个线程是否在运行状态

不建议
强制关闭
有时候强制关闭会抛出异常
或者根本关闭不java 检测线程状态了
java 检测线程状态你在线程中设置个boolean
变量
flag
加个判断
你想关闭的时候控制一下
当flag==false的时候
就跳出线程
2楼的
如果线程不阻塞,你调用interrup方法根本不起作用
只有阻塞时才起作用 关于java 检测线程状态和如何查看java线程状态的介绍到此就结束了，不知道你从中找到你需要的信息了吗 ？如果你还想了解更多这方面的信息，记得收藏关注本站。 java 检测线程状态的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于如何查看java线程状态、java 检测线程状态的信息别忘了在本站进行查找喔。

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