Java使用JDBC驱动连接MySQL数据库

import java.sql.Connection; 
import java.sql.DriverManager; 
 
public class DB_Helper { 
  public static void main(String[]args) { 
     
     
    try { 
      Class.forName("com.mysql.jdbc.Driver"); // 加载MYSQL JDBC驱动程序 
      System.out.println("加载驱动成功!"); 
    } catch (Exception e) { 
      System.out.print("加载驱动失败!"); 
      e.printStackTrace(); 
    } 
     
     
    try { 
      //public static Connection getConnection(String url,String user,String password) 
      /* 
       * url : a database url of the form jdbc:subprotocol:subname 
       * user : the database user on whose behalf the connection is being made 
       * password : the user's password 
       */ 
 
      Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/students","root",""); 
      System.out.println("数据库连接成功!"); 
    } catch (Exception e) { 
      System.out.print("数据库连接失败!"); 
      e.printStackTrace(); 
    } 
  } 
}