?? tabbedpanetest.java
字號:
/**
@version 1.02 2004-08-22
@author Cay Horstmann
*/
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
/**
This program demonstrates the tabbed pane component organizer.
*/
public class TabbedPaneTest
{
public static void main(String[] args)
{
JFrame frame = new TabbedPaneFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
/**
This frame shows a tabbed pane and radio buttons to
switch between wrapped and scrolling tab layout.
*/
class TabbedPaneFrame extends JFrame
{
public TabbedPaneFrame()
{
setTitle("TabbedPaneTest");
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
tabbedPane = new JTabbedPane();
// we set the components to null and delay their loading until the tab is shown
// for the first time
ImageIcon icon = new ImageIcon("yellow-ball.gif");
tabbedPane.addTab("Mercury", icon, null);
tabbedPane.addTab("Venus", icon, null);
tabbedPane.addTab("Earth", icon, null);
tabbedPane.addTab("Mars", icon, null);
tabbedPane.addTab("Jupiter", icon, null);
tabbedPane.addTab("Saturn", icon, null);
tabbedPane.addTab("Uranus", icon, null);
tabbedPane.addTab("Neptune", icon, null);
tabbedPane.addTab("Pluto", icon, null);
add(tabbedPane, "Center");
tabbedPane.addChangeListener(new
ChangeListener()
{
public void stateChanged(ChangeEvent event)
{
// check if this tab still has a null component
if (tabbedPane.getSelectedComponent() == null)
{
// set the component to the image icon
int n = tabbedPane.getSelectedIndex();
loadTab(n);
}
}
});
loadTab(0);
JPanel buttonPanel = new JPanel();
ButtonGroup buttonGroup = new ButtonGroup();
JRadioButton wrapButton = new JRadioButton("Wrap tabs");
wrapButton.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
tabbedPane.setTabLayoutPolicy(JTabbedPane.WRAP_TAB_LAYOUT);
}
});
buttonPanel.add(wrapButton);
buttonGroup.add(wrapButton);
wrapButton.setSelected(true);
JRadioButton scrollButton = new JRadioButton("Scroll tabs");
scrollButton.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
}
});
buttonPanel.add(scrollButton);
buttonGroup.add(scrollButton);
add(buttonPanel, BorderLayout.SOUTH);
}
/**
Loads the tab with the given index.
@param n the index of the tab to load
*/
private void loadTab(int n)
{
String title = tabbedPane.getTitleAt(n);
ImageIcon planetIcon = new ImageIcon(title + ".gif");
tabbedPane.setComponentAt(n, new JLabel(planetIcon));
// indicate that this tab has been visited--just for fun
tabbedPane.setIconAt(n, new ImageIcon("red-ball.gif"));
}
private JTabbedPane tabbedPane;
private static final int DEFAULT_WIDTH = 400;
private static final int DEFAULT_HEIGHT = 300;
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -