Question

myeclipse中如何更改树状菜单的默认名称

是Swing的图形设计界面

Answer 1

import java.awt.*;
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.event.*;
import javax.swing.event.*;

public class JTree2 extends JFrame
{
JPanel cp=new JPanel();
JTree jtree;
DefaultMutableTreeNode root;

public JTree2()
{
this.setSize(300,300);
this.setTitle("try to use tree");
cp=(JPanel)this.getContentPane();
cp.setLayout(new BorderLayout());

root=new DefaultMutableTreeNode("school");
createTree(root);
jtree=new JTree(root);
cp.add(jtree,BorderLayout.CENTER);
}

public static void main(String[] args)
{
JTree2 JTree2 = new JTree2();
JTree2.setVisible(true);
}

private void createTree(DefaultMutableTreeNode root)
{
DefaultMutableTreeNode classroom=null;
DefaultMutableTreeNode number=null;

classroom=new DefaultMutableTreeNode("classroom");
root.add(classroom);

for(int i=1;i<=8;i++)
{
number=new DefaultMutableTreeNode("No."+String.valueOf(i));

if(i==4)
{
for(int j=1;j<=5;j++)
{
number.add(new DefaultMutableTreeNode("seat"+String.valueOf(j)));
}
}
classroom.add(number);
}
}

protected void processWindowEvent(WindowEvent e)
{
if(e.getID()==WindowEvent.WINDOW_CLOSING)
{
System.exit(0);
}
}
}
自己用API去查这个类

追问

如何在左边显示树状菜单，在右边显示几个textFeild和button