JDBC

以 MySQL为例：

public static String url = "jdbc:mysql://localhost:3306/test";
public static String name = "root"; 
public static String pwd = ""; 
//看用哪个jar包 就用哪个class
// Class.forName("com.mysql.jdbc.Driver"); 
Class.forName("com.mysql.cj.jdbc.Driver");
Connection conn = DriverManager.getConnection(url, name, pwd); 
PreparedStatement pst = conn.prepareStatement(sql); 
ResultSet rs = pst.executeQuery();