我的JDBC工具类怎么连接错误，说路径错误，不知道错再哪里

[燃烧的太阳启火行]

请输入用户名:
ooo
请输入密码:
kkk
java.io.FileNotFoundException: src\jdbc.properties (系统找不到指定的路径。)
at java.base/java.io.FileInputStream.open0(Native Method)
at java.base/java.io.FileInputStream.open(FileInputStream.java:196)
at java.base/java.io.FileInputStream.<init>(FileInputStream.java:139)
at java.base/java.io.FileInputStream.<init>(FileInputStream.java:94)
at java.base/java.io.FileReader.<init>(FileReader.java:58)
at cn.itcast.util.JDBCUtils.<clinit>(JDBCUtils.java:30)
at cn.itcast.jdbc.JDBCDemo9.login(JDBCDemo9.java:44)
at cn.itcast.jdbc.JDBCDemo9.main(JDBCDemo9.java:24)
java.sql.SQLException: The url cannot be null
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:661)
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:229)
at cn.itcast.util.JDBCUtils.getConnection(JDBCUtils.java:54)
at cn.itcast.jdbc.JDBCDemo9.login(JDBCDemo9.java:44)
at cn.itcast.jdbc.JDBCDemo9.main(JDBCDemo9.java:24)
用户名和密码错误!
----------------------------------------------------------------------------
package cn.itcast.util;

import java.io.FileReader;
import java.io.IOException;
import java.net.URL;
import java.sql.*;
import java.util.Properties;

public class JDBCUtils {
//声明静态成员变量
private static String url;
private static String user;
private static String password;
private static String driver;
/**
* 文件的读取，只需读取一次拿到这些值。使用静态代码块
*/
static {
//读取资源文件，获取值
try {
//1.创建Properties集合类
Properties pro = new Properties();
//获取src路径下的文件方式---->ClassLoader类加载器
ClassLoader classLoader = JDBCUtils.class.getClassLoader();
URL res = classLoader.getResource("jdbc.properties");
String path = res.getPath();
// System.out.println(path);

//2加载文件
pro.load(new FileReader("src/jdbc.properties"));

//3获取属性 数据 赋值
url = pro.getProperty("url");
user = pro.getProperty("user");
password = pro.getProperty("password");
driver = pro.getProperty("driver");
//4注册驱动
Class.forName(driver);

} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}

}

/**
* 获取连接
* @return 连接对象
*/

public static Connection getConnection()throws SQLException{
return DriverManager.getConnection(url,user,password);
}
/**
* 释放资源
*/

public static void close(Statement stmt,Connection conn){
if(stmt != null){
try {
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if(conn != null){
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}

public static void close(ResultSet rs ,Statement stmt, Connection conn){

if (rs != null){
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if(stmt != null){
try {
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if(conn != null){
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}

}
-------------------------------------------------------------------------------
package cn.itcast.jdbc;

import cn.itcast.util.JDBCUtils;

import java.sql.*;
import java.util.Properties;
import java.util.Scanner;

/**
* 练习
* *需求
* 1.通过键盘登陆用户名和密码
* 2.判断用户是否登陆成功
*/
public class JDBCDemo9 {
public static void main(String[] args) {
//1键盘登陆，接收用户名和密码
Scanner sc = new Scanner(System.in);
System.out.println("请输入用户名:");
String username = sc.nextLine();
System.out.println("请输入密码:");
String password = sc.nextLine();
//2调用方法
boolean flag = new JDBCDemo9().login(username,password);
//3判断结果，输出不同语句
if(flag){
System.out.println("登陆成功!");
}else {
System.out.println("用户名和密码错误!");
}

}
//登陆方法
public boolean login(String username,String password){
if (username ==null || password == null){
return false;
}
//连接数据库是否判断登陆成功
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
//1获取连接
try {
conn = JDBCUtils.getConnection();
//2定义sql
String sql = "select * from uesr where username = ? AND password=?";
//3获取执行sql对象
pstmt = conn.prepareStatement(sql);
//给？赋值
pstmt.setString(1,username);
pstmt.setString(2,password);
//4执行查询
rs = pstmt.executeQuery();
//5判断--如果有下一行，则返回true,否则返回false
/* if (rs.next()){
return true;
}else {
return false;
}*/
return rs.next();
} catch (SQLException e) {
e.printStackTrace();
}finally {
JDBCUtils.close(rs,pstmt,conn);
}
return false;
}
}
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url=jdbc:mysql:///db4
user=root
password=root
driver=com.mysql.jdbc.Driver

[勿忘永恒]

src 不用写 在我印象里是 pro.load(new FileReader("/jdbc.properties")); 这样的