How do you kill a thread in Java?
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Is it possible to kill a Java thread without raising an exception in it?
This is just for testing purposes - I want to simulate a case when the entire computer dies ... |
I am calling two threads from a main thread, call them thread 1 and thread 2. When thread 1 stops, I want to stop or kill thread 2 also. How can ... |
I would like to have a window with a simple form (radio buttons and so on). Users can make there selections and press a "Submit" button. Additionally to that I would ... |
I have a thread that downloads some images from internet using different proxies.
Sometimes it hangs, and can't be killed by any means.
public HttpURLConnection uc;
public InputStream in;
Proxy proxy = new Proxy(Proxy.Type.HTTP, new ...
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I am using a ThreadPool via ExecutorService. By calling shutDownNow() it interrupts all running threads in the pool. When this happens I want these threads to give up their resources (socket ... |
Is there a way to kill a child thread after some specified time limit in Java?
Edit: Also this particular thread may be blocked in its worst case (Thread is used to ... |
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How to kill a running thread in java
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I have a thread:
Thread t = new Thread(){
public void run(){
ServerSocketConnection scn = (ServerSocketConnection)
...
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I have a Runnable running inside a ThreadPoolExecutor long polling on an http request using the HttpClient .
So I am doing the request in a very way ... |
I google the solution for killing a java thread. And there exists two solutions: 1. set a flag
2. using Thread.interrupt
But both of them are not suitable for me. In my thread, ... |
is there anyway to kill a thread or interrupt it immediately.
Like in one of my thread, i call a method which takes time to execute (2-4 seconds). This method is in ... |
I have a application where a thread is listening for TCP connections, and will need to be killed. What is the best way to do this? I know that Thread.stop is ... |
We run application built by SAP which runs on IBM JRE.
I can get the thread level CPU usage using ps -mp <PID> -o THREAD. Is there any similar way to kill ... |
I have a Spring web application running in Oracle Application Server, which is based on Apache. I'm afraid I don't know which component this question might apply to.
My question is ... |
Thread currentThread=Thread.currentThread();
public void run()
{ ...
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public void stop(){
setRun(false);
inComingWorkThread.interrupt();
outGoingWorkThread.interrupt();
}
I was trying to stop those thread using interrupt call. And I got an interrupt exception.
public ...
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I'm trying run some javascripts in java. I'm not sure if the scripts are correct and I'd like to kill the the invocation after a time period. This is how i ... |
I'm running a HtmlUnit web automation app. It usually works correctly, however, sometimes it goes overboard with StackOverflowError. That usually happens somewhere within its JS thread, and, hence, I can't catch ... |
It is possible to kill a thread that is in state RUNNING in a non programatically way?
I know that top command in *nix can show threads. Can I kill the thread ... |
In theory, the JDB (java debugger) allows for a single thread to be killed. In practice, is it possible? Here I attach jdb to my JVM, which has an agentlib at ... |
Hi all, Need some help here. How do we kill a running thread after elapsing a settime say about 2 minutes? I know we could use the Interrupt method of the thread to stop a running method but i am not sure how i can stop after a period of time. Any help is appreciated. |
Matt, Lets talk about dead threads Dead threads are threads that have completed their run() method. Now these threads cannot be started again as you know. Thus to "kill" the thread you will have to remove or make null any reference that exists to this thread object. The garbage collector will do it job of garbage collection. About Idle threads Idle ... |
The interrupt() call is not guaranteed to work. If only t1 is on a wait() call, t2 can call interrupt() to do what you want to do. I think there is a better alternative to achieve this. Use a common resource that both threads check. t2 can set the proper condition on which t1 can return and t2 can also check ... |
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what is the best way to kill a thread ? ok, I have few child threads which don't hold any resources but are user threads (Actually Timer threads). I want to kill all of them at some point so that my parent thread can end. since stop() is Deprecated, what could be the best way to kill a tread. I was ... |
I have a program which run on thread now I have made a GUI interface to run the same. There I have 3 option - Start,Stop,Rerun. I want to start the thread and would like to rerun it if i stop the same. I am trying following code but it stops but not able to rerun it rathermy application do System.exit(0)? ... |
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Ilya, Once a thread starts and its run() method returns, that thread cannot be restarted. I'd guess that, if you are working with multiple threads, you probably want the functionality that is provided by the wait() and notify() methods. Check the API for more info on those methods, or do a search at this site. Hope that helps. |
this is my code to accept client upload directorys or files! windows ok, under linux: when i start again address is already use ,how can i do? It like that i can't kill thread's threa,how can i do public class Frame1 extends JFrame{ ... PooledRemoteFileServer server; //start or stop listening thread void jButton1_actionPerformed(ActionEvent e) { if(server== null) { server = new ... |
When a worker thread is hung in a synchronous IO operation (such as a JDBC call) here is a trick I developed on how to kill the worker thread as well as the supervisory thread. You may say "but this is brute force, not very elegant!" Well, at least this brute solution works! Try using interrupt() or stop() (deprecated, by the ... |
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Hi All, I have implemented a Thread Pool. Thread of this thread pool executes execute() method of the difft. assignments given to it. If thread gets stuck inside this execute method for certain amount of time, I want to kill it. I am able to know whether thread has completed this certain amount time but do not know how I can ... |
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I have encountered a problem while implementing the following requirement, My requirement:- I have two threads Thread_1 and Thread_2. Thread_2 performs TASK which cant be implemented or performed in loop as it is not a single functionality to achieve. Thread_1 should start the Thread_2 and Thread_2 needs to be stopped after a pre-defined time, say 5 minutes only in case of ... |
Hi folks, Im having the following problem: A thread that i started always cause dead lock wainting for a resource that it will never get. I just want to kill it, but I dont know how to do it. After start this thread, ive already set up a timeout in the method join(), with no sucessful. Here the snippet: ... Thread ... |
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I have a thread which is started when its outer class is instantiated. At any given time, this thread likely to be blocked by a DatagramSocket.read() call, and it is in an infinite loop. I want to write a method called close() which, among other things, will kill this thread. My first thought was for the loop condition to be an ... |
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Originally posted by Anthony Smith: I have a class that implements Runnable. The main method of this class just starts threads. When any of the threads complete, I want the program to stop. How do I do this? That's an interesting scenario. Most of the time, you would want a particular thread (or set of threads) to finish -- not when ... |
Hi all, I'have run may thread (class implementing Runnable)using a shell script and stored the PID in a file so I can use it to stop the process using the kill command. my thread open some resources, like an rvd (Tibco RVD), so when killing the process using the kill method, my rvd is still running. my question is : which ... |
A thread dies when the code it was running returns. There's no safe way to "kill" a thread - you must arrange for its code to exit. The main thread can die before the program ends. This will not cause threads that it created to die. The above assumes your threads are not "daemon" threads. If you don't know what that ... |
Hi, everyone. I do a lot of java/j2ee work, but not much with the Thread class. I wrote a simple thread manager, which spawns two threads. Each of those threads then goes into infinite loops, with a Thread.sleep(3000) in the loop. I'd like to know if there's a way to kill one of the child threads (but leave the other one ... |
Hi if you have a Runnable class and you start it in Timer Assume that run is in infinite loop setting all references of that thread to null will kill the thread?? Giving that the class inherits from Thread and run is in infinite loop, setting the class ref to null will kill the thread immediately or kill the thread in ... |
We can interrupt a thread using the interrupt method right? is there any way we can interrupt a thread other than this when it's sleeping or waiting or if a thread is on a join operation? Also, stop,suspend,destroy methods have all been deprecated right? so is there a way we can actually kill a thread? Thanks. [ September 18, 2008: Message ... |
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Hi all, I'have run may thread (class implementing Runnable)using a shell script and stored the PID in a file so I can use it to stop the process using the kill command. my thread open some resources, like an rvd (Tibco RVD), so when killing the process using the kill method, my rvd is still running. my question is : which ... |
I'm trying to create a game where the player goes from one level to the other. The player has to complete some tasks to get their in a limited time and I show the time using a JProgressBar. However, what happenes is, after the user completes a level before the progressbar has reached its end, the user clicks next level and ... |
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Hello, I have code implemented for threading. My code instantiate 3 threads, each thread has while loop on a common list once a object fro that list is assigned to that thread that object is removed from list. So no repetition of object. Now my object is file object the thread process that file and takes next one. The processing may ... |
in general, my program use servlet(Record) and every request to a servlet is handled by a new thread of Record. In the doget or dopost method of that servlet i launch a java program that continuously return me some data. Using the servlet context i save a unique ID per Record thread and with this ID i take the right servlet ... |
Pankaj Kumarkk wrote: Another question was: If I have got a thread handle then how do I kill that thread. I read Thread.stop is deprecated. The reason that the stop() method has been deprecated is because it is not possible to guarantee to kill a thread in a safe manner. The stop() method will kill the thread, but it can have ... |
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There's no foolproof way. You could define a flag that the code run by the thread would check occaisonally. If the flag is set, that is s a request to stop. A specific example of that is the Thread method interrupt(). It sets the interupt flag, and also unblocks some methods like sleep, wait or yield. |
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hello, I'm writing a program that reads in a couple of files which are created by another program. Sometimes only 1 file will be read, sometimes there will be two. In some cases even none. I'm using 2 threads to check if the files exist. the thread is terminated when it has found a file (with a boolean value and while ... |
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public static void main( String[] args ){ try{ Main p = new Main(); p.execute(); }catch(Exception e){ e.printStackTrace(); } } boolean checkTask = false; TimerTask task = new TimerTask(){ public void run(){ checkTask = true; } }; public void execute(){ Share obj = new Share(); Thread _thread= new BusinessThread(obj); _thread.start(); Timer timer = new Timer(); timer.schedule( task, 90*1000 ); while( !checkTask ){ ... |
Farmor wrote: Really stupid that one has to do several programs and tie them together only to kill a thread. There are plenty of ways to kill a thread but the clean ones usually require the code running in the logic to have some mechanism to be notified that you want it to stop. So really it's just a bad implementation ... |
Hi, In my Java application, i use a library written in C++ using JNI. The tasks that are executed by the C library sometimes take a lot of time, so I was considering adding an option for the user to be able to stop it. As these tasks are running in a thread, i was wondering whether there is a way ... |
Hi folks, I have a thread that will work every 5 minutes. The code is like this: boolean shouldRun = true; public void stopRunning() { shouldRun = false; } public void run() { while (shouldRun) { Thread.sleep(60 * 1000 * 5); doSomething(); } } In one servlet, I put the code to kill the thread in the destory(). However, when I ... |
If the thread you interrupt is not currently using an interruptable routine, then all that happens is that a "flag" is set on the thread. If your code then, does not periodically check whether or not it's been interrupted (there is a method for this in Thread), then, effectively, you haven't interrupted it. |
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You have not posted to code for Stopper, so it's impossible to reason about that 1. How can I tell when thread is finished? Use Thread.Join() or Thread.isAlive() 2. How do I kill this thread once it is finished? You can't and you don't. Just let the method the thread is running exit normally. Sometimes that means putting in a boolean ... |
Hi: I have a multithread java server application. The application listens to a socket, and when some client wants to connect to it, it creates a new Thread derived class which will read from input socket, do some processing, write to output socket and end. However, sometimes a thread could be requested to do a long processing, or just a mad ... |
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The run method of the SocketListener remains the same. The problem is that the SocketListener is still locked in the same line. How can I terminate it brute force? I have both the Thread and the SocketListener (in the vectors). Can you recomend any way to kill this thread regardless the fact that it is locked inside the *run*? |
Thread.interrupt() http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Thre ad.html#interrupt() is not about killing or stopping a thread. It is more about kicking a blocked thread. There is no way to kill a thread. As been said above, the thread should be designed to accept instruction to stop gracefully. The interrupt() was created by sun as a solution sun came up for the problems of thread stop(), it ... |
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I am monitoring a third party java (no access to code) application running as a service under Windows 2000. psinfo identifies two threads that have been in a running state for 8 hours. My CPU started running at 50% at the time these threads started. Question: Is there a command line utility or way to kill an individual java thread without ... |
Hi all, In my application i need to start multiple threads for different purposes. While am running the application , after 5 hrs my application hanging (because of memory ). It may be because of lots of threads running. Could any of you tell me how to overcome this. Suggestions would be highly appreciated. thanks. Message was edited by: kiran.rredy@gmail.com |
Hi All, We have hosted a website in a particular Linux web server. Whenever the tomcat restarts, my JAVA program (WTLogFilePhantom) will start a new Thread, but those threads are not stopped yet (forget to invoke the stop method). Now the problem is, there are many thread processes which are running in the server. I want to kill those processes from ... |
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I don't know where you read that, because it isn't documented, but nevertheless it's true that closing the server socket causes an exception. So why test for it being closed too? Just close the ServerSocket:. The accept() throws an IOException or maybe a SocketException, you break out of your loop, and there you are. Back to while(true) or for(;;) or whatever ... |
In recent versions of the JDK they deprecated the stop() and destroy() methods. They did so because those methods can kill a thread in a "dirty" way. The replacement approach is to have a while(isRunning){} loop in the run() method and to set isRunning to false via a call to another method. I have a scenario that can be described as ... |