Mysql -> retornar resultados

import java.sql.*;

public class Sql
{
	
public Statement stmt = null; 
public ResultSet rs = null;
public Connection conn = null;

	public Sql()
	{
		
	}
	
	public void loadDriver()
	{
		try 
		{ 
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            System.out.println("Driver carregado");
        }
         catch (Exception ex) 
         { 
            System.out.println("O driver nao pode ser caregado");
       	 }

	}
	
	public void authServer()
	{
		try 
		{
           conn = DriverManager.getConnection("jdbc:mysql://localhost/java?user=root&password=");
            System.out.println("usuario logado");
        } 
        catch (SQLException ex) 
       	{
            System.out.println("SQLException: " + ex.getMessage()); 
            System.out.println("SQLState: " + ex.getSQLState()); 
            System.out.println("VendorError: " + ex.getErrorCode()); 
        }

	}
	
	public ResultSet mysqlQuery(String query)
	{
	
		try
		{
    		stmt = conn.createStatement(); 
    		rs = stmt.executeQuery(query);
    		
		}
		catch(SQLException e)
		{
			System.out.println("Nao foi possivel efetuar query");
		}
		return rs;
	}
	
	public static void main(String args[])
	{
			Sql a = new Sql();
			a.loadDriver();
			a.authServer();
		ResultSet query = 	a.mysqlQuery("select * from users");
		try
		{
			while(query.next())	
		{
			String id = query.getString("uid");
			String login = query.getString("login");
			String pass = query.getString("password");
    		System.out.println("Id -> "+id + " login-> "+login+"password -> "+pass);
		}
		}
		catch(SQLException e)
		{
			System.out.println("Nao foi possivel mostrar os dados");
		}
			
	}	
}