No suitable driver found for jdbc:mysql:localhost:mysql when using JDBC to connect to MySQL database
MySQL version: 8.0.26
Change the driver to:
“jdbc:mysql://localhost:3306/mysql?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai”

import java.sql.*;

public class JDBCTest {
    public static void main(String[] args) {
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }

        Connection conn = null;
        try {
            conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mysql?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai","root","dcc12345");
            System.out.println("数据库连接成功");

        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }finally {
            if(conn != null){
                try {
                    conn.close();
                } catch (SQLException throwables) {
                    throwables.printStackTrace();
                }
            }
        }
    }
}

The writing method of the new version of MySQL driver is different from that of the previous version. Jar package 8.0. * everything is common