JDBC连接数据库oracle的代码

import java.sql.*;
public class memoryTest {
public Connection getConnection() {
Connection conn = null;
try {
Class.forName("oracle.jdbc.driver.OracleDriver"); //加载数据库驱动程序
System.out.println("数据库驱动加载成功！");
String url = "jdbc:oracle:thin:@localhost:1521:oracleadmin";//oracleadmin为数据库的SID
String user = "system"; //连接数据库用户名
String password = "123456"; //连接数据库密码
Connection con = DriverManager.getConnection(url, user, password); //返回数据库连接的对象
if (con != null) {
System.out.println("成功的与Oracle数据库建立连接！！");
}
} catch (Exception e) {
e.printStackTrace();
} 
return conn; //返回Connection实例 
}
public static void main(String[] args) {
memoryTest getConn = new memoryTest();
getConn.getConnection();
}
}