Process communication.

Question

Hi.
I need to pass an object from a process to another.
The idea is to raise the application, and, after few validations, call an "executable" jar file which contains other application.
What I need is to show a window (splash) between the execution of the first application and the complete load of the second. Then, when second application loaded, splash window must to be closed.
I am trying to to that with 2 process: one raised with a main method and the other using Runtime.exec over a batch file (*.bat). My question, of course, is: how can I pass de window (awt.Frame) objetc from teh first application to the second?

Answer 1

This will work going way back if that's your concern. Got it from this forum a while back. You use it as follows:
  new Splash(frameNameHere, "C:/my_sub_dir/gifNameHere.gif");And here is the code:
import java.awt.*;
import java.awt.event.*;
public class Splash extends Window {
  private Image splashImage;
  private int imgWidth, imgHeight;
  private String imgName;
  private static final int BORDERSIZE = 5;
  private static final Color BORDERCOLOR = Color.blue;
  Toolkit tk;
  public Splash(Frame f, String imgName) {
    super(f);
    this.imgName = imgName;
    tk = Toolkit.getDefaultToolkit();
    splashImage = loadSplashImage();
    showSplashScreen();
    f.addWindowListener(new WindowListener());
  public Image loadSplashImage() {
    MediaTracker tracker = new MediaTracker(this);
    Image result;
    result = tk.getImage(imgName);
    tracker.addImage(result, 0);
    try {
      tracker.waitForAll();
    catch (Exception e) {
      e.printStackTrace();
    imgWidth = result.getWidth(this);
    imgHeight = result.getHeight(this);
    return (result);
  public void showSplashScreen() {
    Dimension screenSize = tk.getScreenSize();
    setBackground(BORDERCOLOR);
    int w = imgWidth + (BORDERSIZE * 2);
    int h = imgHeight + (BORDERSIZE * 2);
    int x = (screenSize.width - w) /2;
    int y = (screenSize.height - h) /2;
    setBounds(x, y, w, h);
    setVisible(true);
  public void paint(Graphics g) {
    g.drawImage(splashImage, BORDERSIZE, BORDERSIZE,
      imgWidth, imgHeight, this);
  class WindowListener extends WindowAdapter {
    //  was windowActivated, thanks to H.Grippa for the fix!
    public void windowOpened(WindowEvent we) {
      setVisible(false);
      dispose();
}