import java.sql.*;

public class test
{
   public static void main(String[] args) throws Exception
   {
      String URL = "jdbc:mysql://localhost/test";
      String USER = "root";
      String PASS = "";
      String DRIVER = "com.mysql.jdbc.Driver";
      String sql = "select if ( languageCode = ?, ?, ? ) as someLocale from Locale";
      ResultSet rs;
      PreparedStatement stmt;
      
      
      DriverManager.registerDriver((Driver) Class.forName(DRIVER).newInstance());
      
      Connection con = DriverManager.getConnection(URL, USER, PASS);      


      stmt = con.prepareStatement(sql);

      stmt.setObject(1, "en");
      stmt.setObject(2, "en_US");
      stmt.setObject(3, "en_GB");

      rs = stmt.executeQuery();
      rs.next();
      System.out.println("Class: " + rs.getObject("someLocale").getClass().getName());
      System.out.println("Object " + rs.getObject("someLocale").toString());
      

     con.close();
   }
}