How to test internet connection using Java (in NetBeans)

Determine if internet connection is available using Java in NetBeans

Download the code :
https://drive.google.com/folderview?id=0B4fPeBZJ1d19ck52TUpNenBtLVU&usp=sharing

package application;

import java.net.*;

public class InternetConnection
{
    public static boolean InternetConnection ()
    {
        Socket sock = new Socket();
        InetSocketAddress addr = new InetSocketAddress("www.google.com",80);

        try
        {
            sock.connect(addr,3000);
            //JOptionPane.showMessageDialog(null,"You are connected!");
           
            return true;
        }
        catch (Exception e)
        {
            //JOptionPane.showMessageDialog(null,"Please check your Internet Connection!");

            return false;
        }
        finally
        {
            try
            {
                sock.close();
            }
            catch (Exception e)
            {

            }
        }
    }
}


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