how to change font size in JLabel

To change the font size of a JLabel in Java, you can use the setFont method of the JLabel class and pass it a new Font object with the desired size.

Here's an example of how you might do this:

import java.awt.Font;
import javax.swing.JLabel;

public class Main {
    public static void main(String[] args) {
        JLabel label = new JLabel("Hello, World!");
        label.setFont(new Font(label.getFont().getName(), label.getFont().getStyle(), 24));
    }
}

In this example, the setFont method is used to set the font of the JLabel to a new font with the same name and style as the original font, but with a size of 24 points.

You can adjust the font size as desired by changing the third argument to the Font constructor.