Access denied for user 'root'@'localhost' (using password: YES)这个怎么解决

import java.sql.*;

public class StandardJDBCSample {

		public static void main(String[] args) {
	        Connection conn = null;
	        try {
	            //1. 加载并注册JDBC驱动
	            Class.forName("com.mysql.cj.jdbc.Driver");
	            //2. 创建数据库连接
	            conn = DriverManager.getConnection(
	                    "jdbc:mysql://localhost:3306/imooc?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai",
	                    "root", "854287"
	            );
	            //3. 创建Statement对象
	            Statement stmt = conn.createStatement();
	            ResultSet rs = stmt.executeQuery("select * from employee where dname='研发部'");
	            //4. 遍历查询结果
	            while (rs.next()) {
	                Integer eno = rs.getInt(1); //eno
	                String ename = rs.getString("ename");
	                Float salary = rs.getFloat("salary");
	                String dname = rs.getString("dname");
	                System.out.println(dname + "-" + eno + "-" + ename + "-" + salary);
	            }
	        }catch(Exception e){
	            e.printStackTrace();
	        }finally {
	            try {
	                if (conn != null && conn.isClosed() == false) {
	                    //5. 关闭连接,释放资源
	                    conn.close();
	                }
	            }catch(Exception ex){
	                ex.printStackTrace();
	            }
	        }

	    }
	}

         老师我按照代码写了，结果出现这个怎么解决，密码是对的已经确认过了

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