JFrame help
CodeGuru Home VC++ / MFC / C++ .NET / C# Visual Basic VB Forums Developer.com
Results 1 to 2 of 2

Thread: JFrame help

Hybrid View

  1. #1
    Join Date
    Aug 2009

    JFrame help

    Below is the code to generate the random color,size and position of rectangles in a JFrame. my question is how can i make sure that the rectangle drawn is entirely
    inside the JFrame? Asume the frame is 500x500

    class DrawPanel extends JPanel {

    public void paintComponent(Graphics g){

    Graphics2D g2 = (Graphics2D) g;

    int r = (int) (Math.random() * 250);
    int gr = (int) (Math.random() * 250);
    int b = (int) (Math.random() * 250);

    g.setColor(new Color(r,gr,b));

    int ht = (int) ((Math.random() * 120) + 10);
    int width = (int) ((Math.random() * 120) + 10);
    int x = (int) ((Math.random() * 40) + 10);
    int y = (int) ((Math.random() * 40) + 10);


  2. #2
    Join Date
    May 2006

    Re: JFrame help

    There are a few ways of tackling this, a simple way is to generate the x and y points first and then generate the width and height with maximum values of the frame size minus the location ie max rect width = frame width - x and max rect height = frame height - y
    Posting code? Use code tags like this: [code]...Your code here...[/code]
    Click here for examples of Java Code

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Windows Mobile Development Center

Click Here to Expand Forum to Full Width

This a Codeguru.com survey!

On-Demand Webinars (sponsored)