Fit image to a panel ?

Question

hello,
i have a panel to which i wnat to add an image. this image i want it to fit all the panel.
how can i do that ?
if there is a sample code it is appreciated.
thank u !

Answer 1

thank you puce it is appreciated.
i just found a method called constrain(http://www.informit.com/guides/content.aspx?g=java&seqNum=77) that do the job. here is a compilable code ( but gives an error at runtime) hope u can help me out here.the code code is very simple, u have a JTabbedPane to which u have to add a image(put whatever image in you working directory) here is the code:
import java.awt.*;
import javax.swing.*;
import java.awt.image.BufferedImage;
public class ImagePanel extends JPanel {
    private BufferedImage img;
   * Constrains an Image (or BufferedImage) to a specific width and heigth; if the source
   * image is smaller than width X height then its size is increased to fit
  public static BufferedImage constrain( Image src, int width, int height )
    try
      // Get the source Image dimensions
      int srcWidth = src.getWidth( null );
      int srcHeight = src.getHeight( null );
      // Compute the width to height ratios of both the source and the constrained window
      double srcRatio = ( double )srcWidth / ( double )srcHeight;
      double windowRatio = ( double )width / ( double )height;
      // These variables will hold the destination dimensions
      int destWidth = width;
      int destHeight = height;
      //if( windowRatio > srcRatio )
      if( windowRatio < srcRatio )
        // Bind the height image to the height of the window
        destHeight = ( int )( ( ( double )width / ( double )srcWidth ) * ( double )srcHeight );
      else
        // Bind the width of the image to the width of the window
        destWidth = ( int )( ( ( double )height / ( double )srcHeight ) * ( double )srcWidth );
      // Create a new BufferedImage and paint our source image to it
      BufferedImage destImage = new BufferedImage( destWidth,
                             destHeight,
                             BufferedImage.TYPE_USHORT_565_RGB );
      Graphics g = destImage.getGraphics();
      g.drawImage( src, 0, 0, destWidth, destHeight, null );
      // Return the new BufferedImage
      return destImage;
    catch( Exception e )
      e.printStackTrace();
    return null;
    public ImagePanel(String img) {
        this(new ImageIcon(img).getImage());
    public ImagePanel(Image img) {
     this.img=constrain(img,this.getWidth(),this.getHeight());
        /*this.img = img;
        Dimension size = new Dimension(img.getWidth(null),img.getHeight(null));
        setPreferredSize(size);
        setMinimumSize(size);
        setMaximumSize(size);
        setSize(size);
        setLayout(null);*/
    public void paintComponent(Graphics g) {
        g.drawImage(img,0,0,null);
      public static void main(String[] args){
       JFrame frame = new JFrame("Converter");
       frame.setSize(1500,1500);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        ImagePanel p = new ImagePanel(".\\button.gif");
          frame.add(p);
          frame.pack();
        frame.setVisible(true);
}