InetAddress - getHostName()

Question

I am using getHostName method of InetAddress class to get the host name of an ip address
but it returns me the same ip address as hostname(for some addresses it is working fine)
Following is my code
import java.awt.*;
import java.awt.event.*;
import java.net.*;
class GetIP extends Frame implements ActionListener{
TextField t = new TextField("yahoo.com",20);
TextArea ta = new TextArea("",10,50);
Button b1 = new Button("Get IP Addresses");
public GetIP(){
add(t);
add(ta);
add(b1);
b1.addActionListener(this);
setLayout(new FlowLayout());
setSize(400, 300);
setTitle("Getip");
setVisible(true);
public void actionPerformed(ActionEvent ae){
try{
ta.setText("");
InetAddress[] address = InetAddress.getAllByName(t.getText());
for(int i=0;i<address.length;i++)
ta.append(address.getHostName()+" : "+address[i].getHostAddress()+"\n");
catch(Exception e){ta.setText(e.toString());}
public static void main(String args[]){
GetIP mainFrame = new GetIP();
Thank you
Manu

Answer 1

Some times for security purpose, the applet security prevents the host name to be known to others.
Regards
Deepa Datar