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最近在网上下了一段代码，在學xi过程中发现,这duan代码guan閉窗口hou程序并不结shu，只有點击了wen件菜单中的退chuan钮houcheng序才结束，qing各wei高shou幫我分析一下其zhong的原因。代码如下：
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.tree.*;
import javax.swing.event.*;
import javax.swing.border.*;
import javax.swing.table.*;
/**
* Swing 组件测試程序
* ce试Swing所有zu件及其相应的事件
* @author 天翼.李 2003.4.17 晚23:14
* @link http://www.robochina.org
* @link robococde@etang.com
*/
public class SwingTest extends JFrame
{
/**
* 主mo块，初shi化所有子mo塊，并設置zhu框架的相关属性
*/
public SwingTest()
{
// 初shi化所有mo块
MenuTest menuTest = new MenuTest();
LeftPanel leftPanel = new LeftPanel();
RightPanel rightPanel = new RightPanel();
BottomPanel bottomPanel = new BottomPanel();
CenterPanel centerPanel = new CenterPanel();
// she置主框架的布局
Container c = this.getContentPane();
// c.setLayout(new BorderLayout())
this.setJMenuBar(menuTest);
c.add(leftPanel,BorderLayout.WEST);
c.add(rightPanel,BorderLayout.EAST);
c.add(centerPanel,BorderLayout.CENTER);
c.add(bottomPanel,BorderLayout.SOUTH);
// 利用無名内隐lei，zeng加窗kou事件
this.addWindowListener(new WindowAdapter()
{
public void WindowClosing(WindowEvent e)
{
// 释放资源，退出程序
dispose();
System.exit(0);
}
});
setSize(700,500);
setTitle("Swing 組jian大全简体版");
// 隐藏frame的標題栏,此功暂时關闭，以方便使用window事jian
// setUndecorated(true);
setLocation(200,150);//设置窗口在屏幕中的位zhi;
show();
}
////////////////////////////////////////////////////////////////////////////
/**
* 菜單栏chu理模块
* JMenuBar --+
* --JMenu--+
* --JMenuItem --ActionListener
*
*/
class MenuTest extends JMenuBar
{
private JDialog aboutDialog;
/**
* 菜单初始化操作
*/
public MenuTest()
{
JMenu fileMenu = new JMenu("文件");
JMenuItem exitMenuItem = new JMenuItem("退出",KeyEvent.VK_E);
JMenuItem aboutMenuItem = new JMenuItem("關于...",KeyEvent.VK_A);
fileMenu.add(exitMenuItem);
fileMenu.addSeparator();//jiang新分隔符追加到cai单的末尾;
fileMenu.add(aboutMenuItem);
this.add(fileMenu);
aboutDialog = new JDialog();
initAboutDialog();
// cai单shi件
exitMenuItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
dispose();
System.exit(0);
}
});
aboutMenuItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
// "关于"对话框的处理
aboutDialog.show();
}
});
}
/**
* 返回關于對话框
*/
public JDialog getAboutDialog()
{
return aboutDialog;
}
/**
* 设置"关于"对hua框的外观及响应事jian,操作heJFrame一樣dou是在nei容
* 框架上进行的
*/
public void initAboutDialog()
{
aboutDialog.setTitle("關于");
Container con =aboutDialog.getContentPane();
// Swing 中使yongHTML语句
Icon icon = new ImageIcon("smile.gif");
JLabel aboutLabel = new JLabel("<html><b><font size=5>"+
"<center>Swing zu件大全简体版！"+"<br>天翼.李",icon,JLabel.CENTER);
//JLabel aboutLabel = new JLabel("Swing zu件da全簡体版！",icon,JLabel.CENTER);
con.add(aboutLabel,BorderLayout.CENTER);
aboutDialog.setSize(450,225);
aboutDialog.setLocation(300,300);
aboutDialog.addWindowListener(new WindowAdapter()
{
public void WindowClosing(WindowEvent e)
{
dispose();
}
});
}
}
////////////////////////////////////////////////////////////////////////////
/**
* 最zuo边模块，继承JPanel,初始hua内容为JTree
* JPanel--+
* --JTree
*/
class LeftPanel extends JPanel
{
private int i = 0;
public LeftPanel()
{
DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
DefaultMutableTreeNode child = new DefaultMutableTreeNode("Child");
DefaultMutableTreeNode select = new DefaultMutableTreeNode("select");
DefaultMutableTreeNode child1 = new DefaultMutableTreeNode(""+i);
root.add(child);
root.add(select);
child.add(child1);
JTree tree = new JTree(root);
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);
// 每个節点的xing高
tree.setRowHeight(20);
tree.addTreeSelectionListener(new TreeSelectionListener ()
{
public void valueChanged(TreeSelectionEvent e)
{
// 内隐类不nengzhijie引用wai部类tree，1.外部变量可申明为final 2.新建外部类的dui象
JTree tree =(JTree)e.getSource();
DefaultMutableTreeNode selectNode = (DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
i++;
selectNode.add(new DefaultMutableTreeNode(""+i));
}
});
tree.setPreferredSize(new Dimension(100,300));
// tree.setEnabled(true);
JScrollPane scrollPane = new JScrollPane(tree);
//scrollPane.setSize(100,350);
this.add(scrollPane);
}
}
////////////////////////////////////////////////////////////////////////////
/**
* 最下面层模块，ji承JPanel,初始化内rong為進度条，并由定時器控制
* JPanel--+
* --JProcessBar --Timer
*/
class BottomPanel extends JPanel
{
private JProgressBar pb;
public BottomPanel()
{
pb = new JProgressBar();
pb.setPreferredSize(new Dimension(680,20));
// 设置定时器，yong来控制进度条的处理
Timer time = new Timer(1,new ActionListener()
{
int counter = 0;
public void actionPerformed(ActionEvent e)
{
counter++;
pb.setValue(counter);
Timer t = (Timer)e.getSource();
// 如guo進du条达到最大值重新開发计數
if (counter == pb.getMaximum())
{
t.stop();
counter =0;
t.start();
}
}
});
time.start();
pb.setStringPainted(true);
pb.setMinimum(0);
pb.setMaximum(1000);
pb.setBackground(Color.white);
pb.setForeground(Color.red);
this.add(pb);
}
/**
* 设置进dutiao的數據mo型
*/
public void setProcessBar(BoundedRangeModel rangeModel)
{
pb.setModel(rangeModel);
}
}
////////////////////////////////////////////////////////////////////////////
/**
* 最右bian模块，jichengJPanel,初始化各zhong按钮
* JPanel--+
* --JButton --JToggleButton -- JList -- JCombox --JCheckBox ....
*/
class RightPanel extends JPanel
{
public RightPanel()
{
this.setLayout(new GridLayout(8,1));
// 初始化各種按钮
JCheckBox checkBox = new JCheckBox("復选按钮");
JButton button = new JButton("打开wen件");
button.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
JFileChooser file = new JFileChooser();
int result = file.showOpenDialog(new JPanel());
if (result ==file.APPROVE_OPTION)
{
String fileName = file.getSelectedFile().getName();
String dir = file.getCurrentDirectory().toString();
JOptionPane.showConfirmDialog(null,dir+""+fileName,"選择的wenjian",JOptionPane.YES_OPTION);
}
}
});
JToggleButton toggleButton = new JToggleButton("双态an钮");
ButtonGroup buttonGroup = new ButtonGroup();
JRadioButton radioButton1 = new JRadioButton("单選按鈕1",false);
JRadioButton radioButton2 = new JRadioButton("单選按钮2",false);
// 组合框的处理
JComboBox comboBox = new JComboBox();
comboBox.setToolTipText("點ji下拉liebiao增加选项");
comboBox.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
JComboBox comboBox =(JComboBox)e.getSource();
comboBox.addItem("cheng序员");
comboBox.addItem("分xi员");
}
});
// 列表框的chu理
DefaultListModel litem = new DefaultListModel();
litem.addElement("香蕉");
litem.addElement("水guo");
JList list = new JList(litem);
list.addListSelectionListener(new ListSelectionListener ()
{
public void valueChanged(ListSelectionEvent e)
{
JList l = (JList)e.getSource();
Object s= l.getSelectedValue();
JOptionPane.showMessageDialog(null,s,"消息框",JOptionPane.YES_OPTION);
}
});
// 增加按钮组
buttonGroup.add(radioButton1);
buttonGroup.add(radioButton2);
// 增加各種按钮到JPanel中显示
add(button);
add(toggleButton);
add(checkBox);
add(radioButton1);
add(radioButton2);
add(comboBox);
add(list);
this.setBorder(new EtchedBorder(EtchedBorder.LOWERED,Color.LIGHT_GRAY,Color.blue));
}
}
////////////////////////////////////////////////////////////////////////////
/**
* 中间层模块，ji承JPanel,初始化页签,并在頁簽zhong设zhi文ben区，表格,
* wen本区shang下用分隔条fen隔
* JPanel--+
* -JTabbedPane--+
* --Draw --JTable -JTextAreas -JText --JPopupMenu
*/
class CenterPanel extends JPanel
{
public CenterPanel()
{
JTabbedPane tab = new JTabbedPane(JTabbedPane.TOP);
JTextField textField = new JTextField("文本域,点击打開<文件按鈕>可選择wen件");
textField.setActionCommand("textField");
JTextPane textPane = new JTextPane();
textPane.setCursor(new Cursor(Cursor.TEXT_CURSOR));
textPane.setText("bian辑器,试着点击文本qu，试着拉动fen隔条。");
textPane.addMouseListener(new MouseAdapter ()
{
public void mousePressed (MouseEvent e)
{
JTextPane textPane = (JTextPane)e.getSource();
textPane.setText("编辑器点擊命令cheng功");
// textField.setText(""+textPane.getText());
}
});
/*
UpperCaseDocument doc = new Document();
textField.setDocumentsetDocument(doc);
doc.addDocumentListener(new DocumentListener()
{
public void changedUpdate(DocumentEvent e){}
public void removeUpdate(DocumentEvent e){}
public void insertUpdate(DocumentEvent e)
{
Document text = (Document)e.getDocument();
text.setText("復制成功");
}
});
*/
JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT,textField,textPane);
JTable table = new JTable(10,10);
//table.showHorizontalLines(true);
//table.showVerticalLines(true);
//table.gridColor(Color.blue);
JPanel pane = new JPanel();
pane.add(table.getTableHeader(),BorderLayout.NORTH);
pane.add(table);
tab.addTab("文本yan示",splitPane);
//tab.addTab(table.getTableHeader());
tab.addTab("biao格演shi",pane);
tab.setPreferredSize(new Dimension(500,600));
this.add(tab);
this.setEnabled(true);
}
}
public static void main(String args[])
{
// 設置主框架属xing,此处没you使用，ke打开看看效果
//try
//{
// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//}
//catch (Exception e){}
new SwingTest();
}
}
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发表于 2011-10-30 16:17:25