method returning null on JSP page.Plz HELP!!!

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method returning null on JSP page.Plz HELP!!!

public String getServerAddress(String sName,int sPort,String pKey)
        {
            String sAddress = null;
            if(sPort>=0)
            {
                sAddress="http"+"://"+sName+":"+sPort+"/browser/"+pKey;
            }
            else
            {
                sAddress="http"+"://"+sName+"/browser/"+pKey;

            }
            System.out.println("sAddress at getServer method::::"+sAddress);
            return sAddress;

        }

When I am calling this method on the jsp page it is returning null while the parameter values are successfully passed.while I am trying to print the sAddress value here it is printing correct here. I am new to Java, so please help me as it could also because of some silly mistake. Thanks

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