Hi Friend,

We have modified your code.

import java.io.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.sql.*;
import java.util.*;
public class menu5 extends JFrame //implements ActionListener
{
//coursefrm pro=new coursefrm();
JFrame j;
JPanel j2;
JTabbedPane tp;
JLabel l1,l2,l3,l4,l5;
JTextField t1,t2,t3,t4,t5;
JButton courbtn,facbtn,admin,hebtn,visit;

public void openURL(String url) {
String osName = System.getProperty("os.name");
try {
if (osName.startsWith("Windows"))
Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + url);
else {
String[] browsers = {"firefox", "opera", "konqueror", "epiphany", "mozilla", "netscape" };
String browser = null;
for (int count = 0; count < browsers.length && browser == null; count++)
if (Runtime.getRuntime().exec(new String[] {"which", browsers[count]}).waitFor() == 0)
browser = browsers[count];
Runtime.getRuntime().exec(new String[] {browser, url});
}
}
catch (Exception e) {
JOptionPane.showMessageDialog(null, "Error in opening browser" + ":\n" + e.getLocalizedMessage());
}
}
menu5()
{
j=new JFrame("Main Menu");
j2=new JPanel(new GridLayout(3,2));
admin=new JButton("Addmission");
courbtn=new JButton("Course Details");
facbtn=new JButton("Faculty");
hebtn=new JButton ("Help");
visit=new JButton ("Visit Us");
j2.add(admin);
j2.add(courbtn);
j2.add(facbtn);
j2.add(hebtn);
j2.add(visit);
j.add(j2);
courbtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae){
coursefrm pro=new coursefrm();
pro.dis();
}
});
facbtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae){
faculty1 f=new faculty1();
f.dis();
}
});
visit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae){
openURL("http://www.roseindia.net";);

}
});
}
public void dis()
{
j.setSize(300,150);
j.setVisible(true);
j.setResizable(true);
}

public static void main(String z[]){
menu5 pro=new menu5();
pro.dis();
}
}

Thanks