In Java:
I have an object that holds references to 2 daemon threads. I am considering the corner case where it is not deinitialized, so I can determine whether I need a ... |
for my purposes of html parsing, I have implemented a PRODUCER/CONSUMER PATTERN. MY problem is the way in wich I can stop the consumer after that a producer have finished ... |
By referring to http://www.javamex.com/tutorials/synchronization_volatile.shtml, I am not sure whether I need to use volatile keyword in the following case, due to additional rule 3.
- A primitive static variable will be ...
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I have a requirement, that I want to start a poller once which will run foreever until the machine is restarted or the process is being killed. Now, I tried to ... |
In my mobile app, a user can enter text into an input field and press enter to cause the text to be sent to the server. They can repeat this as ... |
I have a Runnable that has this in it: public void run() { try { Thread.sleep( 3000 ); } catch (InterruptedException ie) { System.out.println( "Interrupted" ); } } Right after I start that thread, I start a loop that checks to see if it's alive, and if it is calls interrupt() on it. The loop will continue for a total of ... |
The new thread will keep running (assuming you are running a loop inside it) after the main thread finishes. This is the default behavior. In fact, if you DONT want the thread to continue running after main() exits, you must explicitly set the thread to be a daemon thread before you start it. So you don't have to do anything special ... |
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I have a program that starts several new threads, all of which loop infinitely, each taking time to sleep between execution of it's own code. My question is this- If I name the threads from my main "hub" (the program which starts all the threads), is there a way for me to use the Thread name to verify whether or not ... |
I'm not certain that I understand your question but I'll propose an idea for what I currently THINK your question is. (p.s. Some might call ideas like this heresy, and they might be right...but it is at least an idea. You are spinning off multiple threads and it appears that you want to know when ALL threads are no longer alive. ... |
Morning all, In a multi-threaded application, is there any way of discovering/listing which threads (thread names) are still "alive", i.e. have not yet finished their run() method? I mean programmatically not using some monitor. I know I can find out how many are active using Thread.activeCount() but is there an array or something lying around that holds the names for those ... |
Yes it can but don't count on it. First you must know that Thread is not like any other object which cease to exist when someone lose reference to it. When Thread is started, thread can exist even if someone set reference to it to null like in this exampleTread ref = new Thread(MyImpl); ref.start(); ref = null; The point is ... |
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Why do you want to stop the thread in the first place if you will immediatly start an identical one? Just leave it alone when you open and close windows. If the thread has to change the window (if open) then have a reference to the window in the thread's Runnable and change it as the window opens and closes. |
? Antisocial how? I simply come here to help or be helped. My manner is usually fine. I just don't like people posting at me when it has nothing to do with the thread or I am simply helping someone else who came here for help. Let's stay on topic. I think the OP got the answer they were looking for. ... |
public synchronized static SingletonThread getInstance(){ if(instance == null){ instance = new SingletonThread(); instance.setDaemon(false); return instance; }else{ return instance; } } private SingletonThread() { this.run(); } public void run() { int a = 0; try{ while(true){ deserialize(); //the files in directory // List directory for all files // for loop and call sednByFTP instance.sleep(4000); } }catch(Exception e){ |
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