Wait until end of thread execution before executing the next method

Question

I\'ve a JFrame subclass that manage my UI and call a method of Item Object to import items in my DB:

public TestGUI() throws IOException
{

    initComponents();         


        

Answer 1

This is how you should use it:

class ProgressBar extends Thread{
    public void run(){
        System.out.println("Progress Bar - start");
        try {
            Thread.currentThread().sleep(2000);
        } catch (InterruptedException e) {}
        System.out.println("Progress Bar - end");
    }
}
public class ThreadDemo {
    public static void main(String[] args) throws InterruptedException {
        System.out.println("Main Thread Start");
        Thread t1 = new Thread(new ProgressBar());
        t1.start();
        t1.join();
        System.out.println("Main Thread End");
    }
}

OUTPUT:

Main Thread Start
Progress Bar - start
Progress Bar - end
Main Thread End