Swing高级控件
这篇文章给大家演示一下Swing中的高级控件的用法，为了方面大家入门，我们的示例将会尽可能的简化。Swing中的高级控件包括JTabbedPane（页签）,JPanel（面板）,JDesktopPane（桌面窗格）,JInternalFrame（内部窗口）,JProgressBar（进度条）,JTree（树）,JMenuBar（菜单栏）,JPopupMenu（右键菜单）,JToolBar（工具栏）,JSplitPane（分隔窗格）,JTable（表格）,JSlider（滑动栏）等。运行效果如下：<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
代码如下：
package org.leno.swing.demo1;
import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.tree.*;
/**
* @author leno
* @version 1.0
* 一个例子程序，让大家系统地了解Swing中一些高级控件(JTabbedPane,JPanel,JDesktopPane
* ,JInternalFrame,JProgressBar,JTree,JMenuBar,JPopupMenu,JToolBar,JSplitPane
* ,JTable,JSlider等)的基本用法，这里只是来个大杂烩，在实际应用中要注意取舍，灵活机变。
* （http://blog.****.net/lenotang 转载请保留相关出处信息!）
*/
public class DemoSuperComponent {
public static Dimension HGAP5 = new Dimension(5, 1);
public static Dimension VGAP5 = new Dimension(1, 5);
public static Dimension HGAP25 = new Dimension(25, 1);
public static Dimension VGAP25 = new Dimension(1, 25);
@SuppressWarnings("serial")
public static void main(String[] args) {
// 创建一个主窗体
JFrame jFrame = getMainFrame();
// 获得窗体的内容窗格
Container contentPane = jFrame.getContentPane();
// 创建一个选项面板(也叫页签）
JTabbedPane jTabbedPane = getMainTabbedPane();
// 创建一个放置滑动条的面板
JPanel jPanel1 = getSliderPanel();
// 创建一个放置二维表格的面板
JPanel jPanel2 = getTablePanel();
// 创建一个放置分隔窗格的面板
JPanel jPanel3 = getSplitPanePanel();
// 创建一个放置工具栏的面板
JPanel jPanel4 = getToolBarPanel();
// 创建一个放置菜单栏的面板
JPanel jPanel5 = getMenuBarPanel();
// 创建一个放置右键菜单的面板
JPanel jPanel6 = getPopupMenuPanel();
// 创建一个放置树结构的面板
JPanel jPanel7 = getTreePanel();
// 创建一个放置进度条的面板
JPanel jPanel8 = getProgressBarPanel();
// 创建一个放置内部窗体的面板(带桌面）
JPanel jPanel9 = getInternalFramesPanel(jTabbedPane);
// 创建一个放置对话框的面板
JPanel jPanel10 = getDialogPanel();
// 创建一个放置滚动窗格的面板
JPanel jPanel11 = getScrollPanel();
// 将创建的这些面板都放入到一个选项面板中
jTabbedPane.add("滑动条", jPanel1);
jTabbedPane.add("二维表格", jPanel2);
jTabbedPane.add("分隔窗格", jPanel3);
jTabbedPane.add("工具栏", jPanel4);
jTabbedPane.add("菜单栏", jPanel5);
jTabbedPane.add("右键菜单", jPanel6);
jTabbedPane.add("树", jPanel7);
jTabbedPane.add("进度条", jPanel8);
jTabbedPane.add("内部窗口", jPanel9);
jTabbedPane.add("对话框", jPanel10);
jTabbedPane.add("滚动窗格", jPanel11);
// 将选项面板组件放置在容器中(充分体现组件放在容器中,容器又是组件的思想)
contentPane.add(jTabbedPane);
// 设置窗体可见
jFrame.setVisible(true);
}
private static JPanel getScrollPanel() {
JPanel jPanel11 = new JPanel();
jPanel11.setLayout(null);
Object[] privs = new Object[]{"增加用户","删除用户","修改用户","预览用户"};
JList jList = new JList(privs);
JScrollPane jScrollPane = new JScrollPane();
jScrollPane.setBounds(200, 50, 120, 60);
jScrollPane.getViewport().add(jList);
jPanel11.add(jScrollPane);
return jPanel11;
}
private static JFrame getMainFrame() {
// 设置美化外观
JFrame.setDefaultLookAndFeelDecorated(true);
// 创建一个窗体
JFrame jFrame = new JFrame("示例高级Swing控件");
// 设置窗体的位置和大小
jFrame.setSize(800, 600);
// 取得屏幕大小和窗口大小
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = jFrame.getSize();
// 设置窗口能够在当前屏幕居中显示
if (frameSize.width > screenSize.width) {
frameSize.width = screenSize.width;
}
if (frameSize.height > screenSize.height) {
frameSize.height = screenSize.height;
}
jFrame.setLocation((screenSize.width - frameSize.width) / 2,
(screenSize.height - frameSize.height) / 2);
// 设置手动布局，这样意味着放在jFrame内容窗格上的组件都要指定自身的位置和大小，否则将不会显示。JFrame默认布局方式为BorderLayout
jFrame.setLayout(null);
// 设置窗体的关闭行为
jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
return jFrame;
}
private static JTabbedPane getMainTabbedPane() {
JTabbedPane jTabbedPane = new JTabbedPane();
jTabbedPane.setTabPlacement(JTabbedPane.LEFT);
jTabbedPane.setBounds(0, 0, 650, 500);
return jTabbedPane;
}
private static JPanel getDialogPanel() {
final JPanel jPanel10 = new JPanel();
JButton jButton1 = new JButton("输入对话框");
jButton1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showInputDialog(jPanel10, "请输入您的姓名？");
}
});
JButton jButton2 = new JButton("警告对话框");
jButton2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane
.showMessageDialog(
jPanel10,
"<html><h1><span style=/"color:red/">HTML格式的警告内容！</span></h1></html>",
"紧急通知", JOptionPane.WARNING_MESSAGE);
}
});
JButton jButton3 = new JButton("确认对话框");
jButton3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int result = JOptionPane.showConfirmDialog(jPanel10,
"你认为自己足够优秀吗？");
if (result == JOptionPane.YES_OPTION) {
JOptionPane.showMessageDialog(jPanel10, "不错！");
} else if (result == JOptionPane.NO_OPTION) {
JOptionPane.showMessageDialog(jPanel10, "要自信！");
}
}
});
JButton jButton4 = new JButton("消息对话框");
jButton4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
URL img = getClass().getResource(
"/resources/images/optionpane/bottle.gif");
String imagesrc = "<img src=/"" + img
+ "/" width=/"284/" height=/"100/">";
String message = "你快迟到了！";
JOptionPane.showMessageDialog(jPanel10, "<html>" + imagesrc
+ "<br><center>" + message + "</center><br></html>");
}
});
JButton jButton5 = new JButton("组件对话框");
jButton5.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JTextField t[] = new JTextField[4];
t[0] = new JTextField("输入姓名:");
t[0].setEditable(false);
t[1] = new JTextField();
t[2] = new JTextField("输入密码:");
t[2].setEditable(false);
t[3] = new JTextField();
String but[] = new String[] { "确定" };
int result = JOptionPane.showOptionDialog(null, t, "登陆信息",
JOptionPane.YES_OPTION,
JOptionPane.INFORMATION_MESSAGE, null, but, but[0]);
if (result == 0) {
JOptionPane.showMessageDialog(jPanel10, "登陆成功");
}
}
});
jPanel10.add(jButton1);
jPanel10.add(jButton2);
jPanel10.add(jButton3);
jPanel10.add(jButton4);
jPanel10.add(jButton5);
return jPanel10;
}
private static JPanel getInternalFramesPanel(JTabbedPane jTabbedPane) {
JPanel jPanel9 = new JPanel();
jPanel9.setLayout(null);
// 创建桌面
JDesktopPane desktop = new JDesktopPane();
desktop
.setBounds(0, 0, jTabbedPane.getWidth(), jTabbedPane
.getHeight());
// 为桌面添加5个内部窗口
for (int i = 0; i < 5; i++) {
JInternalFrame internal = new JInternalFrame("桌面内部窗口" + i, true,
true, true, true);
internal.setSize(250, 250);
internal.setIconifiable(true);
// 将组件移到新位置。通过此组件父级坐标空间中的 x 和 y 参数来指定新位置的左上角。
internal.setLocation(i * 20, i * 20);
internal.setVisible(true);
Icon icon = new ImageIcon(DemoSuperComponent.class
.getResource("/resources/images/plain/Splash.jpg"));
internal.getContentPane().add(new JLabel(icon));
desktop.add(internal);
}
jPanel9.add(desktop);
return jPanel9;
}
@SuppressWarnings("serial")
private static JPanel getProgressBarPanel() {
JPanel jPanel8 = new JPanel();
final JProgressBar jProgressBar = new JProgressBar(
JProgressBar.HORIZONTAL, 0, 100) {
public Dimension getPreferredSize() {
return new Dimension(300, super.getPreferredSize().height);
}
};
final Timer timer = new javax.swing.Timer(100, new AbstractAction() {
public void actionPerformed(ActionEvent e) {
if (jProgressBar.getValue() < jProgressBar.getMaximum()) {
jProgressBar.setValue(jProgressBar.getValue() + 1);
}
}
});
Action loadAction = new AbstractAction("启动") {
public void actionPerformed(ActionEvent e) {
timer.start();
}
};
JButton loadButton = new JButton(loadAction);
Action stopAction = new AbstractAction("停止") {
public void actionPerformed(ActionEvent e) {
timer.stop();
}
};
JButton stopButton = new JButton(stopAction);
jPanel8.add(jProgressBar);
jPanel8.add(loadButton);
jPanel8.add(stopButton);
return jPanel8;
}
private static JPanel getTreePanel() {
JPanel jPanel7 = new JPanel();
DefaultMutableTreeNode root = new DefaultMutableTreeNode("根节点");
DefaultMutableTreeNode parent = new DefaultMutableTreeNode("枝节点");
DefaultMutableTreeNode leaf = new DefaultMutableTreeNode("叶子节点");
parent.add(leaf);
root.add(parent);
JTree tree = new JTree(root);
jPanel7.add(tree);
return jPanel7;
}
private static JPanel getPopupMenuPanel() {
final JPanel jPanel6 = new JPanel();
final JPopupMenu jPopupMenu = new JPopupMenu();
JMenuItem menuItem1 = new JMenuItem("保存");
JMenuItem menuItem2 = new JMenuItem("编辑");
JMenuItem menuItem3 = new JMenuItem("删除");
jPopupMenu.add(menuItem1);
jPopupMenu.add(menuItem2);
jPopupMenu.add(menuItem3);
jPanel6.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
int mask = e.getModifiers();
if (mask == 4) {
jPopupMenu.show(jPanel6, e.getX(), e.getY());
}
}
});
jPanel6.add(jPopupMenu);
return jPanel6;
}
private static JPanel getMenuBarPanel() {
JPanel jPanel5 = new JPanel();
jPanel5.setLayout(null);
// 菜单栏
JMenuBar menuBar = new JMenuBar();
menuBar.setBounds(0, 0, 200, 30);
// 菜单
JMenu menu = new JMenu("菜单一");
JMenu menu2 = new JMenu("菜单二");
JMenu menu3 = new JMenu("菜单三");
// 菜单项
JMenuItem jMenuItem = new JMenuItem("普通菜单项");
JMenuItem jMenuItem2 = new JRadioButtonMenuItem("单选菜单项");
JMenuItem jMenuItem3 = new JCheckBoxMenuItem("复选菜单项");
menu.add(jMenuItem);
menu.addSeparator();
menu.add(jMenuItem2);
menu.add(jMenuItem3);
menuBar.add(menu);
menuBar.add(menu2);
menuBar.add(menu3);
jPanel5.add(menuBar);
return jPanel5;
}
private static JPanel getToolBarPanel() {
JPanel jPanel4 = new JPanel();
// 产生一个工具栏对象
JToolBar jToolBar = new JToolBar();
for (int i = 0; i < 20; i++) {
final String text = String.valueOf(i + 1);
Icon icon = new ImageIcon(DemoSuperComponent.class
.getResource("/resources/images/buttons/" + i + ".gif"));
JButton jButton = new JButton(text, icon);
jButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null, text);
}
});
jToolBar.add(jButton);
}
jPanel4.add(jToolBar);
return jPanel4;
}
private static JPanel getSplitPanePanel() {
JPanel jPanel3 = new JPanel();
jPanel3.setLayout(new BorderLayout());
JLabel lab1 = new JLabel("左边", JLabel.CENTER);
JLabel lab2 = new JLabel("右边", JLabel.CENTER);
JSplitPane jSplitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
lab1, lab2);
jSplitPane.setDividerSize(10); // 设置分割条的宽度
// 设置continuousLayout属性的值，在用户干预要使子组件连续地重新显示和布局子组件
// jSplitPane.setContinuousLayout(true);
// 分隔面板的分隔条显示出箭头
jSplitPane.setOneTouchExpandable(true);
jSplitPane.setDividerLocation(200);
jPanel3.add(jSplitPane);
return jPanel3;
}
private static JPanel getTablePanel() {
JPanel jPanel2 = new JPanel();
// 标题列
Object[] booksColumn = { "图书名称", "图书作者", "图书价格" };
// 二维表格数据
Object[][] dataset = { { "java", "brucl", "85" },
{ "jsp", "lenotang", "67" }, { "javascript", "lunce", "54" } };
JTable jTable = new JTable(dataset, booksColumn);
jTable.setBackground(Color.orange);
// jTable.setBounds(50, 50, 400, 150);
// JTableHeader header = jTable.getTableHeader();
// header.setBackground(Color.blue);
// header.setBounds(50,30,400,20);
JScrollPane scrollPane = new JScrollPane(jTable);
jPanel2.add(scrollPane);
return jPanel2;
}
private static JPanel getSliderPanel() {
JPanel jPanel1 = new JPanel();
GridLayout g = new GridLayout(1, 2);
g.setHgap(5);
g.setVgap(5);
jPanel1.setLayout(g);
BevelBorder border = new BevelBorder(BevelBorder.LOWERED);
// 创建一个水平面板，容纳水平滚动条
JPanel hp = new JPanel();
hp.setLayout(new BoxLayout(hp, BoxLayout.Y_AXIS));
hp.setBorder(new TitledBorder(border, "SliderDemo.horizontal",
TitledBorder.LEFT, TitledBorder.ABOVE_TOP));
jPanel1.add(hp);
// 创建一个垂直面板，容纳垂直滚动条
JPanel vp = new JPanel();
vp.setLayout(new BoxLayout(vp, BoxLayout.X_AXIS));
vp.setBorder(new TitledBorder(border, "SliderDemo.vertical",
TitledBorder.LEFT, TitledBorder.ABOVE_TOP));
jPanel1.add(vp);
JSlider jSlider = new JSlider();
jSlider.setOrientation(JSlider.HORIZONTAL);// 设置方向
jSlider.setMinimum(0);// 设置最小值
jSlider.setMaximum(100);// 设置最大值
jSlider.setMajorTickSpacing(20);// 设置主标号间隔
jSlider.setMinorTickSpacing(5);// 设置辅标号间隔
jSlider.setPaintLabels(true);// Default:false显示标签
jSlider.setPaintTicks(true);// Default:false显示标号
jSlider.setPaintTrack(true);// Determines whether the track is painted
// on the slider
jSlider.setValue(0);// 设置初始值
JPanel p = new JPanel();
p.setLayout(new BoxLayout(p, BoxLayout.Y_AXIS));
p.setBorder(new TitledBorder("SliderDemo.plain"));
p.add(Box.createRigidArea(VGAP5));
p.add(jSlider);
p.add(Box.createRigidArea(VGAP5));
hp.add(p);
hp.add(Box.createRigidArea(VGAP25));
p = new JPanel();
p.setLayout(new BoxLayout(p, BoxLayout.X_AXIS));
p.setBorder(new TitledBorder("SliderDemo.plain"));
jSlider = new JSlider(JSlider.VERTICAL, -10, 100, 20);
p.add(Box.createRigidArea(HGAP25));
p.add(jSlider);
p.add(Box.createRigidArea(HGAP25));
vp.add(p);
vp.add(Box.createRigidArea(HGAP25));
return jPanel1;
}
}