Java开发网 - 我的程序组件怎么显示不出来???帮帮我啊!!急!急!急!

Topic: 我的程序组件怎么显示不出来???帮帮我啊!!急!急!急!

1.我的程序组件怎么显示不出来???帮帮我啊!!急!急!急!

Posted by: cherryzxp
Posted on: 2006-05-31 14:37

import java.awt.*;
import java.awt.event.*;
import java.util.Enumeration;

import javax.swing.*;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.LineBorder;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.MutableTreeNode;
import javax.swing.tree.TreeModel;

public class MessageManagement extends JFrame implements ActionListener,
TreeSelectionListener{

  /**
   *
   */

   static final int AUTO_RESIZE_SUBSEQUENT_COLUMNNS = 0;
  /**
   *
   */

  /**
   * this part about JMenu.
   */
  JMenuBar menubar = new JMenuBar();
JMenu menu1;
JMenu menu2;
JMenuItem menuItem11;
JMenuItem menuItem21;

  JTree jtree;

  JLabel label;
  JTextArea textArea;
  JTable table;



  public MessageManagement() {


    jtree = new JTree(creatTreeModel());
   jtree.setBorder(new EmptyBorder(4, 4, 4, 4));
   jtree.addTreeSelectionListener(this);

   JPanel leftPanel = new JPanel(new BorderLayout());
   leftPanel.setBorder(
   new CompoundBorder(new LineBorder(new Color(192, 192, 192), 4),
   new LineBorder(new Color(160, 120, 30), 3)));

   leftPanel.add(jtree, BorderLayout.CENTER);


   JSplitPane right = new JSplitPane(JSplitPane.VERTICAL_SPLIT);

   right.setTopComponent(creatJTable());
   right.setBottomComponent(creatPane());







   JSplitPane itemPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);

   itemPane.setLeftComponent(new JScrollPane(jtree));
   itemPane.setRightComponent(right);

   this.getContentPane().add(itemPane);
   pack();
   setJMenuBar(creatMenu());
   Dimension screen=Toolkit.getDefaultToolkit().getScreenSize();
    setSize(screen.width,screen.height);
    setTitle("信息管理系统");
    setVisible(true);

  }

  public JMenuBar creatMenu() {

    menu1 = new JMenu("文件(F)");
    menu1.setMnemonic('F');
    menu2=new JMenu("帮助(H)");
    menu2.setMnemonic('H');
    menuItem11=new JMenuItem("退出(X)");
    menuItem11.setMnemonic('X');
    menu1.add(menuItem11);
    menuItem21=new JMenuItem("关于messageManagement(A)");
    menuItem21.setMnemonic('A');
    menu2.add(menuItem21);
    menubar.add(menu1);
    menubar.add(menu2);

    menuItem11.addActionListener(this);
    menuItem21.addActionListener(this);
    return menubar;
  }

  /**
   *
   */
public TreeModel creatTreeModel(){
  DefaultMutableTreeNode root = new DefaultMutableTreeNode("192.168.1.7");
  root.add(creatNode1());
  root.add(creatNode2());
  root.add(creatNode3());
  root.add(creatNode4());
  root.add(creatNode5());
  root.add(creatNode6());

  return new DefaultTreeModel(root);
}

public MutableTreeNode creatNode1(){
  DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("收件箱");
  return node1;
}
public MutableTreeNode creatNode2(){
  DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("发件箱");
  return node2;
}
public MutableTreeNode creatNode3(){
  DefaultMutableTreeNode node3 = new DefaultMutableTreeNode("收藏夹");
  return node3;
}
public MutableTreeNode creatNode4(){
  DefaultMutableTreeNode node4 = new DefaultMutableTreeNode("待处理");
  return node4;
}
public MutableTreeNode creatNode5(){
  DefaultMutableTreeNode node5 = new DefaultMutableTreeNode("公告通知");
  return node5;
}
public MutableTreeNode creatNode6(){
  DefaultMutableTreeNode node6 = new DefaultMutableTreeNode("会议记录");
  return node6;
}
public JPanel creatPane(){
  JPanel panel=new JPanel();
  label=new JLabel("收件人： "+"发件人： "+"主题： ");
  textArea=new JTextArea();
  panel.add(label,"North");
  panel.add(new JScrollPane(textArea),"Center");
  return panel;
}
public JTable creatJTable(){
  String[] header={"收件人","发件人","主题","日期"};
  Object[][] data={null};


  table=new JTable(data,header);
  table.setRowHeight(20);
  table.setAutoResizeMode(AUTO_RESIZE_SUBSEQUENT_COLUMNNS);
  return table;

}
  /**
   * @param args
   */
  public static void main(String[] args) {
    JFrame.setDefaultLookAndFeelDecorated(true);
    Font font=new Font("JFrame",Font.PLAIN,14);
    Enumeration en=UIManager.getLookAndFeelDefaults().keys();
    while(en.hasMoreElements()){
      Object key=en.nextElement();
      if(UIManager.get(key)instanceof Font)
        UIManager.put(key,font);
    }
    new MessageManagement();
  }

  public void actionPerformed(ActionEvent e) {

if(e.getSource()==menuItem11){
   dispose();
   System.exit(0);
}
else if(e.getSource()==menuItem21){
   JOptionPane.showMessageDialog(null,"版权所有（java编程小组）06.5.23");
}
  }

  public void valueChanged(TreeSelectionEvent arg0) {


  }


}

2.Re:我的程序组件怎么显示不出来???帮帮我啊!!急!急!急! [Re: cherryzxp]	Copy to clipboard
Posted by: JavaandC Posted on: 2006-06-01 09:30 把这个方法修改一下就可以了。 public JTable creatJTable(){ String[] header={"收件人","发件人","主题","日期"}; Object[][] data={}; //不要设置成null Object[][] data={null}; table=new JTable(data,header); table.setRowHeight(20); table.setAutoResizeMode(AUTO_RESIZE_SUBSEQUENT_COLUMNNS); return table; }

3.Re:我的程序组件怎么显示不出来???帮帮我啊!!急!急!急! [Re: cherryzxp]	Copy to clipboard
Posted by: cherryzxp Posted on: 2006-06-01 23:18 谢谢了!!太高兴了!!

4.Re:我的程序组件怎么显示不出来???帮帮我啊!!急!急!急! [Re: cherryzxp]	Copy to clipboard
Posted by: cherryzxp Posted on: 2006-06-01 23:19 谢谢了!!太高兴了!!