IPFinder.java

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

public class IPFinder extends JFrame implements ActionListener{
JLabel l;
JTextField tf;
JButton b;
IPFinder(){
super("IP Finder Tool");
l = new JLabel("Enter URL : ");
l.setBounds(50,70,150,20);
tf = new JTextField();
tf.setBounds(50,100,200,20);

    b=new JButton("Find IP");  
    b.setBounds(50,150,80,30);  
    b.addActionListener(this);  
    add(l);  
    add(tf);  
    add(b);  
    setSize(300,300);  
    setLayout(null);  
    setVisible(true);
}
public void actionPerformed(ActionEvent e){
String url = tf.getText();
try{
InetAddress ia = InetAddress.getByName(url);
String ip = ia.getHostAddress();
JOptionPane.showMessageDialog(this,ip);

}catch(UnknownHostException e1){
JOptionPane.showMessageDialog(this,e1.toString());

}
}
public static void main(String[] agrs){
new IPFinder();
}
}