Send SMS Using Java

private String smsGatewayUserId = "";
    private String smsGatewayPassword = "";
    private String smsGatewayURL = "";
    private String urlEncoding = "UTF-8";
    private String smsGatewaySID = "";

    private static String csvFilePath = "/var/www/";

    public String getMessage(String ar[]) {

        return null;
    }
  
public String sendSMS(String mobileNo, String msg) {