jdbc的安装,使用,未出现运行

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为何没有显示运行,下面是源代码
package com.fk.jdbc;
import java.sql.DriverManger;

public class demo {
public static void main(String[] args) throws ClassNotFoundException {
Class.forName("com.mysql.jc.jdbc.Driver");

    String url = "jdbc:mysql://localhost:3306/db1";
    String username = "root";
    String password = "1234";

    Connection conn = DriverManger.getConnection(url,username,password);

    String sql = "update emp1 set salary = 5000 where id = 1";

    Statement stat = conn.createStatement();
    int count = stat.excuteUpdate(sql);

    System.out.println(count);
    stat.close();
    conn.close();


}

}

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有具体运行截图吗?

注册驱动是

Class.forName("com.mysql.cj.jdbc.Driver");

你这个应该将根目录右键 Mark Directory As -> Source Root。
另外你注册驱动的类路径写错了,mysql-connect 8.0之前
应该是"com.mysql.jdbc.Driver",8.0及以后是"com.mysql.cj.jdbc.Driver"