private static String url="jdbc:mysql://localhost:3306/mydb";
private static String name="root";
private static String password="1234";

public static void main(String[] args) {
    try {
      //载入驱动程序
      Class.forName("com.mysql.jdbc.Driver");
      //使用connect与数据库建立连接
      Connection connection=(Connection) DriverManager.getConnection(url,name,password);
      System.out.println("数据库连接成功");
    } catch (Exception e) {
      System.out.println("数据库连接失败");
      e.printStackTrace();
    }
  }

public static void main(String[] args) {
    try {
      //载入驱动程序
      Driver driver=new Driver();
      DriverManager.registerDriver(driver);//
      //使用connect与数据库建立连接
      Connection connection=(Connection) DriverManager.getConnection(url,name,password);
      System.out.println("数据库连接成功");
    } catch (Exception e) {
      System.out.println("数据库连接失败");
      e.printStackTrace();
    }
  }