How Can I Automatically Scale an ImageIcon to Fit a JLabel's Size?

Scale the ImageIcon automatically to label size

Users are often displaying an image on a label on their JFrame. Sometimes the images have wildly different sizes. This can cause the GUI to look inconsistent. One solution is to have the size of the label control the size of the image. The following code demonstrates how to do that.

  ImageIcon img= new ImageIcon("res.png");
  jLabel.setIcon(img);
  jLabel.setPreferredSize(new Dimension(100, 100));
  jLabel.setSize(new Dimension(100, 100));

The setPreferredSize method, along with the setSize method, is used to set the size of the label. In the example above, we are setting the size to 100 x 100 pixels. This will cause the image to be scaled to fit within those dimensions.

This is a simple and effective way to automatically scale images to fit the size of a label. However, it is important to keep in mind that this will only work with images that are smaller than the size of the label. If the image is larger than the label, it will be clipped.

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