Hi Friend,

Try the following code:

1) ClassA.java

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

class ClassA extends JFrame{
ClassA()
{
JTable table = new JTable(new String[][] { {"A", "Delhi"}, {"B", "Mumbai"} },
new String[] {"Name", "Address"});
JScrollPane scroll = new JScrollPane(table);
getContentPane().add(scroll, BorderLayout.CENTER);
}
}

2) ClassB.java

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

class Form extends JFrame {
JButton Edit,SAVE;
JPanel panel;

Form(){
Edit=new JButton("Edit");

panel=new JPanel(new GridLayout(2,2));
panel.add(Edit);
add(panel,BorderLayout.CENTER);
setTitle("FORM");


Edit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae){
ClassA tab=new ClassA();
tab.setVisible(true);
tab.setSize(300,100);
}
});
}
}
class ClassB
{
public static void main(String arg[]){
try
{
Form frame=new Form();
frame.setSize(300,100);
frame.setVisible(true);
}
catch(Exception e)
{}
}
}

Hope that it will be helpful for you.
Thanks