Why Isn\'t My JPanel Updating in My Tile-Based Puzzle Game?

JPanel Not Updating in Puzzle Game

In a puzzle game with randomly placed tiles, the JPanel hosting the tiles is not updating when images are added to it. This issue prevents the new images from being displayed, rendering the puzzle unplayable.

Understanding the Problem

The issue lies in the addComponents() method, which is used to add images to the JPanel. When the updated images are passed to the method, it correctly removes the existing components but fails to properly revalidate and repaint the JPanel. This results in the new images not being displayed.

Solution

To resolve the issue, the addComponents() method should be revised to include the necessary revalidation and repainting steps. The updated code below ensures that the JPanel is updated with the new images:

public void addComponents(Img[] im){
    this.removeAll();
    for(int i=0; i<16; i++){
        im[i].addActionListener(this);
        im[i].setPreferredSize(new Dimension(53,53));
        add(im[i]);
    }
    this.revalidate();

    **Repaint the JPanel to display the updated images**
    this.repaint();
}

With this modification, the addComponents() method correctly removes the existing images, adds the new images, revalidates the JPanel, and repaints it with the updated tiles. The puzzle game should now function properly, displaying the new images in the JPanel.

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