[Solved] Java Runnable Interface Solution [closed]

When you call the thread.start() method, then the code inside the run() method will be executed on a new thread (since class TestThread implements Runnable). When you call thread.run(), this is calling the run() method from within the Main thread, not the one you started previously. This is essentially not using any threaded functionality. Once … Read more

[Solved] Run java function in thread

As a partial solution for the functions / methods (if they don’t need arguments) you can use Threads or an ExecutorService and method references. If you need arguments you will have to write lambda expressions – see the method t3 and it’s start for an example. public class Test { public void t1() { System.out.println(“t1”); … Read more

[Solved] Java: two threads executing until the boolean flag is false: the second thread’s first run stops the first thread

this just isn’t how you’re supposed to work with threads. You have 2 major problems here: java memory model. Imagine that one thread writes to some variable, and a fraction of a second later, another thread reads it. If that would be guaranteed to work the way you want it to, that means that write … Read more

[Solved] Using C++ how can I stop a sleep() thread? [closed]

You can end a sleep early by waiting on a condition variable and then signalling that condition variable when the mouse button is clicked. Here is some proof-of-concept code which should show you how to do it: #include <chrono> #include <thread> #include <condition_variable> #include <mutex> #include <iostream> using namespace std::chrono_literals; std::chrono::time_point <std::chrono::steady_clock> start_time; std::condition_variable cv; … Read more

[Solved] Why not do all the operations in the main thread(Android)? [closed]

From the docs: When an application is launched, the system creates a thread of execution for the application, called “main.” This thread is very important because it is in charge of dispatching events to the appropriate user interface widgets, including drawing events. In other words, ALL UI-related tasks occur on the same thread, and it … Read more

[Solved] Returning values from thread

Your code, in general, seems pretty solid, but there are several problems. The task you created does the trick, and the progress bar will work, but it uses a thread so returning that the tests are complete without confirming the progress of the thread is wrong. Because the tests are in a thread and the … Read more

[Solved] Handle many API requests in parallel vs async/await [closed]

If you have 100 I/O-bound operations, then the 100 operations as a whole are still I/O-bound. CPU-bound is reserved for things that take a non-trivial amount of CPU time. Yes, technically incrementing a counter and starting the next I/O operation does execute CPU opcodes, but the loop would not be considered “CPU-bound” because the amount … Read more

[Solved] multithreading in java

Update: Howard is right, my first example was wrong. I verified this works if you change your active() method: service = Executors.newScheduledThreadPool(50); new Thread() { public void run() { long nextTime = System.currentTimeMillis(); while (true) { service.submit(runnable); long waitTime = nextTime – System.currentTimeMillis(); Thread.sleep(Math.max(0, waitTime)); nextTime += 200; } } }.start(); 3 solved multithreading in … Read more