graph.java

This is source rmi with java

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

public class graph extends JFrame implements ActionListener
{
    private Container cp;
    public JButton but;
    private test t;
    public graph()
     {
         super("Draw graph");
     	 cp=getContentPane();cp.setBackground(Color.darkGray);
	     cp.setLayout(null);

	     t=new test();
	     t.setText("thuan");
	     t.setBounds(10,10,400,400);
	     cp.add(t);

	     but=new JButton("Click here");
	     but.setBounds(410,10,200,20);
	     but.addActionListener(this);
	     cp.add(but);
    }
   public void actionPerformed(ActionEvent evt)
    {
		if(evt.getSource()==but)
		 {
			t.setText("gfgf<sqrt>Thuannd</sqrt>");
		 }
	}
   public static void main(String arg[])
    {
   	 graph t=new graph();
   	 t.setSize(800,500);
   	 t.setVisible(true);
    }
}