Dica: como criar uma classe de conexão com o Oracle 10g Express Edition

package util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class Conexao {
	
	private String url = "jdbc:oracle:thin:@localhost:1521:xe";
	private String usr = "Marcio";
	private String pwd = "Gx12J@";
	private Connection con = null;
	
	public Conexao(){}
	
	public Connection conectaBanco() throws SQLException, ClassNotFoundException{
		Class.forName("oracle.jdbc.driver.OracleDriver");
		con = DriverManager.getConnection(url,usr,pwd);
		return con;
	}
	
	public Connection fechaConexaoBanco() throws SQLException, ClassNotFoundException{
		if(con != null){
		   con.close();
		}
		return con;
	}
}