Swing borders

[Frank Hale]

Is it possible to create a border that you are able to control which borders show on each side of the component? For instance I wanna create a JPanel and have only an etched border on the bottom, all other sides would have no border.
I haven't been able to find anything via google so far... =(

[Nathan Pruett]

If you just want a border on the bottom, why not just add a JSeperator under the component. It's not a border, but it looks the same...

If you really just have tp use a border, you can make your own...

import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Insets;
 
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.AbstractBorder;
 
public class BottomBorder extends AbstractBorder {
    
    public Insets getBorderInsets( Component c ) {
        return new Insets( 0, 0, 5, 0 );
    }
    
    public Insets getBorderInsets( Component c, Insets insets ) {
        Insets i = getBorderInsets( c );
        insets.top = i.top;
        insets.left = i.left;
        insets.right = i.right;
        insets.bottom = i.bottom;
        return insets;
    }
    
    public void paintBorder( Component c, Graphics g, int x, int y, 
            int width, int height ) {
        Color old = g.getColor();
        g.setColor( Color.darkGray );
        g.drawLine( x, y + height - 3, x + width, y + height - 3 );
        g.setColor( Color.lightGray );
        g.drawLine( x, y + height - 2, x + width, y + height - 2 );
        g.setColor( old );
    }
    
    public static void main( String[] args ) {
        JFrame f = new JFrame( "BottomBorder Test" );
        
        JLabel l = new JLabel( "Test", JLabel.CENTER );
        l.setBorder( new BottomBorder() );
        JPanel p = new JPanel();
        p.add( l );
        f.getContentPane().add( p );
        
        f.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
        f.setBounds( 400, 400, 400, 400 );
        f.setVisible( true );
    }
}

[Frank Hale]

Thanks alot Nathan. This will do nicely!