Conexion Java - Oracle 11g

package Sql;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import javax.swing.JOptionPane;
public class Conexion {
 //var conexion
 private Connection cone=null;
 //funcion conexion
 public Connection getConnection() {
 try{
 Class.forName("oracle.jdbc.OracleDriver");
 String url="jdbc:oracle:thin:@localhost:1521:XE";
 String user="ventas";
 String pwd="123";
 cone = DriverManager.getConnection(url, user, pwd);
 if (cone!=null){
 JOptionPane.showMessageDialog(null, "Conexion Satisfactoria Oracle 11g XE");
 }
 }catch(SQLException ex){
 JOptionPane.showMessageDialog(null, "Error Conexion: " + ex.getMessage());
 }catch(Exception e){
 JOptionPane.showMessageDialog(null, "Error Driver: " + e.getMessage());
 }
 return cone;
 }


}