JDBC连接数据库演示案例

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class DBUtil {
    
    private static final String URL="jdbc:mysql://127.0.0.1:3306/student";
    private static final String USER="root";
    private static final String PASSWORD="root";

    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        
        //1、加载驱动程序
        Class.forName("com.mysql.jdbc.Driver");
        //2、获得数据库的连接
        Connection conn = DriverManager.getConnection(URL, USER, PASSWORD);
        //3、通过数据的连接来操作数据库，实现增删改查
        Statement stmt = conn.createStatement();
        ResultSet rst = stmt.executeQuery("select name,age from stu");
        while(rst.next()){
            System.out.println(rst.getString("name")+","+rst.getInt("age"));
        }

    }

}