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Draw a border around an undecorated JFrame in Java
At first, set an undecorated frame −
setUndecorated(true);
Now draw a border −
getRootPane().setBorder (.createMatteBorder(3, 3, 3, 3, Color.ORANGE));
The following is an example to draw a border around an undecorated JFrame −
Example
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class SwingDemo extends JFrame {
JLabel label = new JLabel("Welcome!", JLabel.CENTER);
public SwingDemo() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(new Dimension(500, 300));
add(label, BorderLayout.CENTER);
setUndecorated(true);
getRootPane().setBorder(
BorderFactory.createMatteBorder(3, 3, 3, 3, Color.ORANGE));
setVisible(true);
}
public static void main(String[] args) {
new SwingDemo();
}
}Output
Updated on: 30-Jul-2019
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