Java Networking

import java.net.*;
import java.io.*;
public class ABC {
  public static void main (String args[]) {
    String thisLine;
    URL u;
    if  (args.length > 0) {
      //Open the URL for reading
      try {
        u = new URL(args[0]);
        // now turn the URL into a DataInputStream
        try {
          DataInputStream html = new DataInputStream(u.openStream());
          try {
            while ((thisLine = html.readLine()) != null) 
				{
              System.out.println(thisLine);
            } // while loop ends here
          }  // end try
          catch (Exception e) {
            System.err.println(e);
          }
        } // end try
        catch (Exception e) {
          System.err.println(e);
        }

      } // end try
      catch (MalformedURLException e) {
        System.err.println(args[0] + " is not a parseable URL");
        System.err.println(e);
      }
    } //  end if
  } // end main
}  // end viewsource