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Thread: Paintwindow moving picture

  1. #1
    Junior Member
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    Sep 2014
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    Default Paintwindow moving picture

    PaintWindow pw = new PaintWindow();
                            Random rand = new Random();
                            ImageIcon image = new ImageIcon("C:/Users/Ghostkilla/Desktop/gubbe.jpg");
                            int height = pw.getBackgroundHeight();
                            int dx = -3;
                            int dy = 0;
                            int x = 250;
                            int y = rand.nextInt(height-100);  
                            while(true) {
                                    pw.showImage(image, x, y);
                                    x += dx;
                                    y += dy;
                                    if(x<0) {
                                            dx = -dx;
                                            dx = -dx;

    If you run this code it will move a picture from right to left and hit the left wall and then go to right again leaving the window (It stops there). I want to make so it hits left and then right wall continuesly till someones close the window. So basically im using a for loop to make it go left right all the time and i need help.

    Also I dont know how to make so the picture moves from bottomleftcorner to toprightcorner diagonally without leaving the window.
    Last edited by ghostkilla; September 30th, 2014 at 07:20 PM.

  2. #2
    Super Moderator Norm's Avatar
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    May 2010
    Eastern Florida
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    Default Re: Paintwindow moving picture

    Can you make a small, complete program that compiles, executes and shows the problem?

    What package is the PaintWindow class in? I don't recognize it as part of the Java SE packages.

    how to make so the picture moves from bottomleftcorner to toprightcorner diagonally
    Take a piece of paper and draw the picture in the various locations in the window and note the relationship between the x,y location of the image and its width and height when it is touching on the sides of the window.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
    Super Moderator
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    Jun 2013
    So. Maryland, USA
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    Default Re: Paintwindow moving picture

    Welcome to the forum! Thanks for taking the time to learn how to post code correctly. If you haven't already, please read this topic to learn other useful info for new members.

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