This is a Java source code for a simple graphical application that demonstrates how to use various types of borders in Swing, a Java GUI toolkit. The program defines a class BorderDemo that extends JApplet, a Swing component used for embedding a Java application in a web page or other container.
In this java code, a method make(Border border, String command) is defined to create a new JLabel with the specified Border object and text label. This method is called multiple time, each time with a different type of border and a label describing the border. The borders are created using the BorderFactory class, which provides convenient methods for creating various types of borders in Swing.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | import java.awt.*; import javax.swing.*; import javax.swing.border.Border; public class BorderDemo extends JApplet { public void init() { setBackground(Color.lightGray); getContentPane().setBackground( Color.lightGray ); getContentPane().setLayout( new GridLayout(0,1,7,7) ); make(BorderFactory.createLineBorder(Color.red,2), "BorderFactory.createLineBorder(Color.red,2)"); make(BorderFactory.createMatteBorder(2,2,5,5,Color.red), "BorderFactory.createMatteBorder(2,2,5,5,Color.red)"); make(BorderFactory.createEtchedBorder(), "BorderFactory.createEtchedBorder()"); make(BorderFactory.createRaisedBevelBorder(), "BorderFactory.createRaisedBevelBorder()"); make(BorderFactory.createLoweredBevelBorder(), "BorderFactory.createLoweredBevelBorder()"); make(BorderFactory.createTitledBorder("Title Goes Here"), "BorderFactory.createTitledBorder(\"Title Goes Here\")"); } void make(Border border, String command) { // Make a lable showing the string and with the specified border. // The label will be opaque and will have a light gray background. // The label is added to the applet's content pane. JLabel label = new JLabel(command, JLabel.CENTER); label.setBackground(Color.lightGray); label.setOpaque(true); label.setBorder(border); getContentPane().add(label); } public Insets getInsets() { // Leave a border around the applet where the background // color will show through. return new Insets(7,7,7,7); } } // end class JApplet |
