This question already has answers here:
Simple Swing Delay
(3 answers)
Closed 6 years ago.
In Java, I can use sleep(x) to delay some code from running for x seconds. But, if I'm using Swing, that makes my GUI freeze, so it's not an ideal solution.
How can one create a delay before running a sequence of code in Java?
To start, you probably shouldn't be doing whatever you're doing
in the display thread. If it were in your own thread, the GUI
wouldn't freeze. But short of revisiting your entire thread
strategy, the usual workaround is to add a queue of tasks to
be run later.
Related
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How do you kill a Thread in Java?
(17 answers)
Force kill, stop or destroy thread in java [duplicate]
(1 answer)
Closed 3 months ago.
This post was edited and submitted for review 3 months ago and failed to reopen the post:
Original close reason(s) were not resolved
I have a thread that is running a runnable with just one command like this:
mainRunnable = new Runnable(){
public void run(){
startClient();
}
};
This is not a normal thread where I am doing something over and over again (this would be easy to stop), but a thread were the command is running constantly and is blocking execution of further code in the runnable. So I basically, cannot implement the stop I believe.
This one command startClient is running all the time, is there a way I could stop it using the Thread object?
This question already has answers here:
What does java.lang.Thread.interrupt() do?
(10 answers)
Closed 4 years ago.
I know how to interrupt a thread. But I want to know how interrupt method works internally in java multi threading ?
Here's a simplistic answer. If the thread is in a wait condition, an InterruptedException is thrown. If the thread is active, the thread's interrupted flag is set.
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Ping multiple servers in Java [duplicate]
(2 answers)
How to ping an IP address
(16 answers)
Closed 5 years ago.
I want to ping many machines to obtain information of their reachability. Time is critical here and I dont want to wait 1-2 seconds for every machine (assuming that there are hundreds of them). I tried this code snippet and turns out that the isReachable method is synchronous.
InetAddress.getByName(host).isReachable(timeout);
I need a way to make either that method (if possible) nonblocking or come up with another solution that will help cut down the waiting time.
Any help would be greatly appreciated. Thanks in advance.
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"implements Runnable" vs "extends Thread" in Java
(42 answers)
Closed 8 years ago.
I have studied that we can create threads in two ways in java :
By extending Thread Class
By implementing Runnable interface under which we have to implement run()
Now my question is what is the difference b/w the two?
Is any 1 faster or efficient than other? something related to binding here or linking?
A Thread is a resource for performing work.
A Runnable is a unit of work.
Are you creating a new type of resource, or defining work? It's almost always the later.
In the simplest case there isn't really any functional performance difference. However, creating Runnables allows you to utilize Thread pools without changing your code much, which is a huge boost over using new Thread() in many cases.
This question already has answers here:
How does Java handle multithreading?
(4 answers)
Closed 9 years ago.
While doing multi-threading programming in C we can assign threads to different cores of a processor and it gives us surety that the threads will be executed in different cores (i.e hyper-threading).But how exactly java does the above task--
Does it assign the threads to a single core and execute it in
time-stamp basis or assign to different cores..?
If it assign the above to different cores then how..?
By default, Java does not implement any form of Thread affinity. However, because it uses the underlying operating system's threads, it is possible to use native code to set the cpu affinity for a thread. One example of a project that does this is here: https://github.com/peter-lawrey/Java-Thread-Affinity