Need help in Dynaminc tree

[deemu]

i want to create dynamic javatree in applet .and have to perform the(update functions on tree nodes)
Can any one help me to write the coding.
..............

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

public class Channel extends JApplet {
/**
*
*/
private static final long serialVersionUID = 1L;
JTree tree;
JTextField jtf ;


public void init(){
Container contentPane = getContentPane();
contentPane.setLayout(new BorderLayout());
DefaultMutableTreeNode top = new DefaultMutableTreeNode("channel");



DefaultMutableTreeNode english = new DefaultMutableTreeNode("English");

top.add(english);

DefaultMutableTreeNode english1 = new DefaultMutableTreeNode("English CH1");

english.add(english1);

DefaultMutableTreeNode english2 = new DefaultMutableTreeNode("English CH2");

english.add(english2);


DefaultMutableTreeNode english3 = new DefaultMutableTreeNode("English CH3");

english.add(english3);



DefaultMutableTreeNode deutsch = new DefaultMutableTreeNode("Deutsch");

top.add(deutsch);

DefaultMutableTreeNode deutsch1 = new DefaultMutableTreeNode("deutsch CH1");

deutsch.add(deutsch1);

DefaultMutableTreeNode deutsch2 = new DefaultMutableTreeNode("deutsch CH2");

deutsch.add(deutsch2);

tree = new JTree(top);


int v = ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED;

int h = ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED;
JScrollPane jsp = new JScrollPane(tree,v,h);


contentPane.add(jsp,BorderLayout.CENTER);
jtf = new JTextField ("",20);
contentPane.add(jtf,BorderLayout.SOUTH);


tree.addMouseListener(new MouseAdapter()
{
public void mouseClicked(MouseEvent me){
doMouseClicked(me);

}

});
}
void doMouseClicked(MouseEvent me)
{
TreePath tp = tree.getPathForLocation(me.getX (), me.getY());
if (tp != null)
jtf.setText(tp.toString());
else
jtf.setText("");

}

}
...............
In this above coding i gave the input and getting the output inside the coding itself. but i need the same result without giving ( for eg :english) in the coding.
the result must be instantly create a dynamic tree form throught the conataining website(update functions on tree nodes).