import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.table.*;
import java.awt.*;
import java.lang.reflect.*;
 
 
 
    DefaultTreeModel model;
 
    private void showBranch (DefaultMutableTreeNode branch,
                             Container source)
    {
        int n = source.getComponentCount();
        for (int i = 0; i < n; i++)
        {
            Component c = source.getComponent (i);
            DefaultMutableTreeNode node = new DefaultMutableTreeNode (c);
            branch.add (node);
 
            if (c instanceof Container)
                showBranch(node, (Container) c);
        }
    }
 
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
 
        DefaultMutableTreeNode root = new DefaultMutableTreeNode (this);
        showBranch (root, this);
        model = new DefaultTreeModel (root);
        jTree1.setModel (model);
    }                      
 
    private void jTree1ValueChanged(javax.swing.event.TreeSelectionEvent evt) {                                    
        Object t = evt.getPath().getLastPathComponent();
        if (t instanceof DefaultMutableTreeNode)
        {
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) t;
            Object obj = node.getUserObject();
            setTitle (""+obj);
            showObject (obj);
        }
    }                                   
 
    private void showObject (Object obj)
    {
        Class cls = obj.getClass();
        setTitle (cls.getName());
        Method [] m = cls.getDeclaredMethods();
 
        String [] columns = {"name", "decl" };
        String [] [] data = { { "a", "b"}, { "c", "d" }};
        DefaultTableModel t = new DefaultTableModel (data, columns);
        jTable1.setModel (t);
 
    }