JDBC链接MySQL和Oracle

Connection conn = DriverManager.getConnection("jdbc:mysql://host:port/datebase","user","password");

import java.sql.*;
public class TestJDBC {
    public static void main(String[] args) throws Exception {
        
        //Class.forName("com.mysql.jdbc.Driver");
        
        long start = System.currentTimeMillis();
        
        new com.mysql.jdbc.Driver();
        
        //Connection conn = DriverManager.getConnection("jdbc:mysql://host:port/datebase","user","password");
        Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/martin","root","admin");
        //Connection conn = DriverManager.getConnection("jdbc:oracle:thin@host:port:datebase","user","password");
        
        //System.out.println(conn);
        
        System.out.println(conn);
        long end = System.currentTimeMillis();
        System.out.println("建立连接耗时： "+(end - start));
    }
}