Multithreading practical example

 https://github.com/xlciela/learn-multi-threading/tree/main/java

Runnable ,callable ,Executer service Thred example

 import java.util.concurrent.Callable;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

public class RunnableAndThread implements Runnable , Callable<Integer> {
    @Override
    public void run() {
        System.out.println("hello");
    }

    public void myrun() {
        System.out.println("hellopawan");
    }
    @Override
    public Integer call() {
        return 50;
    }

    public static void main(String args[]) throws ExecutionException, InterruptedException {
        ExecutorService executor = Executors.newFixedThreadPool(3);
        executor.submit((Runnable) new RunnableAndThread());
        executor.submit(()->new RunnableAndThread().myrun());
        Future<Integer> future = executor.submit((Callable<Integer>) new RunnableAndThread());
        System.out.println("Callable result: " + future.get());
        //Thread runnableAndThread = new Thread(()->new RunnableAndThread().myrun());
        //runnableAndThread.start();
        //Thread runnableAndThread1 = new Thread(new RunnableAndThread());
        //runnableAndThread1.start();
    }
}