Problem with java threads

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Problem with java threads

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#1 by (1 votes)

1

I'm not sure how to get something like this to appear when I run:

Thread1 is running task 1
  The main (parent) thread has finished its execution
  Hilo1 is running task 2
  Hilo1 is executing task 3
  Hilo2 is running the task 1
  Hilo1 is running the task 4
  Thread1 is running task 5
  Hilo2 is running the task 2
  Hilo1 is running the task 6
  Hilo2 is running task 3
  Hilo1 is running the task 7
  Hilo2 is running the task 4
  Hilo1 is executing task 8
  Hilo2 is running the task 5
  Hilo1 is running the task 9
  Hilo1 is running the task 10
  Hilo1 has completed its execution
  Hilo2 is running the task 6
  Hilo2 is running the task 7
  Hilo2 is executing task 8
  Hilo2 is running the task 9
  Hilo2 is executing task 10

I have this structure but I'm not sure how to implement it.

public class Principal {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub




        HilosVarios hilo1 = new HilosVarios();

        HilosVarios2 hilo2 = new HilosVarios2(hilo1);
        hilo1.start();
        hilo2.start();
        System.out.println("Terminadas las tareas");
    }

}

java hilos

asked by Juan 18.10.2018 в 13:20

source

1 answer

Get the number of rows of an SQL query Problem when declaring a string to a variable in a C structure

score 1 · Accepted Answer

Here is an example of how you can create threads in different ways. Either extending the class Thread or implemented Runnable

Extending the Thread class ..

    class ThreadEjemplo extends Thread {

    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println("Ejecutando Thread \'ThreadEjemplo\': " +i);
        }
    }

}

And we call it that ..

//Arranca un nuevo hilo. Clase ThreadEjemplo
new ThreadEjemplo().start();

Implemented Runnable ...

class RunnableEjemplo implements Runnable {

    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println("Ejecutando Thread \'RunnableEjemplo\': " +i);
        }
    }

}

And we call it that ..

new Thread(new RunnableEjemplo()).start();

Our class that implements Runnable is passed as a parameter to an instance of Thread

Example in full ..

public class Principal {
    public static void main(String[] args) {
        //Arranca un nuevo hilo. Clase ThreadEjemplo
        new ThreadEjemplo().start();

        //Arranca otro hilo con la clase que implementa Runnable
        new Thread(new RunnableEjemplo()).start();

        System.out.println("El hilo main (padre) ha terminado su ejecución");
    }
}

class ThreadEjemplo extends Thread {

    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println("Ejecutando Thread \'ThreadEjemplo\': " +i);
        }
    }

}

class RunnableEjemplo implements Runnable {

    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println("Ejecutando Thread \'RunnableEjemplo\': " +i);
        }
    }

}

If you want to see it more closely when executing them, you can call the static sleep () - Thread.sleep(1); , within the respective for loop enclosing them within a block try - catch

@Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            try {
                Thread.sleep(1);

            } catch (InterruptedException e) {
                System.out.println("El thread ha sido detenido");
            }

            System.out.println("Ejecutando Thread \'ThreadEjemplo\': " + i);
        }
    }