Open java Webapplication from java standlone application

I want open my java webaaplication from mian class.
esaily we can do following code

public class openWebapplication{
 
  public static void main(String args[])
  {
 String url = "http://localhost:2020/ICD_18_02";
 String os = System.getProperty("os.name").toLowerCase();
        Runtime rt = Runtime.getRuntime();
 
 try{
 
     if (os.indexOf( "win" ) >= 0) {
 
         // this doesn't support showing urls in the form of "page.html#nameLink" 
         rt.exec( "rundll32 url.dll,FileProtocolHandler " + url);
 
     } else if (os.indexOf( "mac" ) >= 0) {
 
         rt.exec( "open " + url);
 
            } else if (os.indexOf( "nix") >=0 || os.indexOf( "nux") >=0) {
 
         // Do a best guess on unix until we get a platform independent way
         // Build a list of browsers to try, in this order.
         String[] browsers = {"epiphany", "firefox", "mozilla", "konqueror",
                        "netscape","opera","links","lynx"};
 
         // Build a command string which looks like "browser1 "url" || browser2 "url" ||..."
         StringBuffer cmd = new StringBuffer();
         for (int i=0; i<browsers.length; i++)
             cmd.append( (i==0  ? "" : " || " ) + browsers[i] +" \"" + url + "\" ");
 
         rt.exec(new String[] { "sh", "-c", cmd.toString() });
 
           } else {
                return;
           }
       }catch (Exception e){
     return;
       }
      return;  
 
}