How do you change the image in a JPanel?

Question

Hey! (firstly, i need to use image on a JPanel, label&icon not an option).
I've made my JPanel class
    public class DrawingPanel extends JPanel {
        Image img;
        DrawingPanel() {
            Image img = Toolkit.getDefaultToolkit().getImage("13.jpg"); //default image at startup
        public void paintComponent (Graphics g) {
            super.paintComponent (g);
            // Use the image width & height to find the starting point
            int imgX = getSize ().width/2 - img.getWidth (this);
            int imgY = getSize ().height/2 - img.getHeight (this);
            //Draw image centered in the middle of the panel   
            g.drawImage (img, 0, 0, this);
        } // paintComponent
    } // DrawingPanelAnd I've made my instance of it and added it to the Frame:
    DrawingPanel imagePanel = new DrawingPanel();Now, I need to change the image on the JPanel according to the user's input. I have the string of the location of the new image. How do I update the JPanel to display this new image? Any help greatly appreciated!!

Answer 1

Well... You could just add a method in your class which sets the image according to the new image name you provided. Something like this:
    public class DrawingPanel extends JPanel {
        Image img;
        DrawingPanel() {
            img = Toolkit.getDefaultToolkit().getImage("13.jpg"); //default image at startup
        public void setImage(String imageName) {
                img = Toolkit.getDefaultToolkit().getImage(imageName); //Loading the desired image
        public void paintComponent (Graphics g) {
            super.paintComponent (g);
            // Use the image width & height to find the starting point
            int imgX = getSize ().width/2 - img.getWidth (this);
            int imgY = getSize ().height/2 - img.getHeight (this);
            //Draw image centered in the middle of the panel   
            g.drawImage (img, 0, 0, this);
        } // paintComponent
    } // DrawingPanel