Adv Java - [Swing: JTabbedPane Class]

♠ Posted by Unknown in Adv Java at 21:03

JTabbedPane Class

A tabbed panes is a component that appears as a group of folders in a file cabinet. Each folder has a title. When a user selects a folder, its contents become visible. Only one of the folders may be selected at a time. Tabbed panes are commonly used for setting configuration options.

Tabbed panes are encapsulated by the JTabbedPanes class, which extends Jcomponent. We will use its default constructor. Tabs are defined via the following method:

    

     void addTab(String str, Component comp)

The general procedure to use a tabbed pane in an applet is outlined here:

1. Create a JTabbedPane object.
2. Call addTab() to add a tab to the pane. (The arguments to this method define the title of the tab and the component it contains.)
3. Repeat step 2 for each tab.
4. Add the tabbed pane to the content pane of the applet.

Example:

/* <APPLET CODE = "JTabbedExample.CLASS" WIDTH = 500 HEIGHT = 500></APPLET>

 */

 import javax.swing.*;

public class JTabbedExample extends JApplet

{

          public void init()

          {

                   JTabbedPane jtp = new JTabbedPane();

                   jtp.addTab("Cities", new CitiesPanel());

                   jtp.addTab("Colors", new ColorsPanel());

                   jtp.addTab("Flavors",new FlavorsPanel());

                   getContentPane().add(jtp);

          }       

}

class CitiesPanel extends JPanel

{

          public CitiesPanel()

          {

                   JButton b1 = new JButton("New York");

                   add(b1);

                   JButton b2 = new JButton("London");

                   add(b2);

                   JButton b3 = new JButton("Hong Kong");

                   add(b3);

                    JButton b4 = new JButton("Tokyo");

                   add(b4);

          }

}       

class ColorsPanel extends JPanel

{

          public ColorsPanel()

          {

                   JCheckBox cb1 = new JCheckBox("Red");

                   add(cb1);

                   JCheckBox cb2 = new JCheckBox("Green");

                   add(cb2);

                   JCheckBox cb3 = new JCheckBox("Blue");

                   add(cb3);

          }

}

         

class FlavorsPanel extends JPanel

{

          public FlavorsPanel()

          {

                   JComboBox jcb = new JComboBox();

                   jcb.addItem("Vanilla");

                   jcb.addItem("Chocolate");

                   jcb.addItem("Strawbarry");

                   add(jcb);

          }

}