Get JFrame window size information in Java

To get JFrame window size information, you can use the following −

environment.getMaximumWindowBounds();

For Screen Size −

config.getBounds()

For Frame Size −

frame.getSize());

The following is an example to get JFrame window size information −

Example

import java.awt.GraphicsConfiguration; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.Rectangle; import javax.swing.JFrame; public class SwingDemo {    public static void main(String[] args) {       GraphicsEnvironment environment = GraphicsEnvironment.getLocalGraphicsEnvironment();       Rectangle bounds = environment.getMaximumWindowBounds();       System.out.println("Screen Bounds = " + bounds);       GraphicsDevice device = environment.getDefaultScreenDevice();       GraphicsConfiguration config = device.getDefaultConfiguration();       System.out.println("Screen Size = " + config.getBounds());       JFrame frame = new JFrame("Frame Info");       frame.setSize(500, 300); frame.setVisible(true);       System.out.println("Frame Size = " + frame.getSize());    } }

Output

Screen Bounds = java.awt.Rectangle[x=0,y=0,width=1366,height=728] Screen Size = java.awt.Rectangle[x=0,y=0,width=1366,height=768] Frame Size = java.awt.Dimension[width=500,height=300]