Not able to resolve javax.validation.constraints.Email; package - spring

Question

Belo is my whole Entity class code.
package com.email.esp.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Transient;
import javax.persistence.UniqueConstraint;
#Entity
#Table(name = "users", uniqueConstraints = { #UniqueConstraint(columnNames = { "email" }) })
public class User {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private Long userId;
#Column(nullable = false, length = 30)
private String name;
#Email(message = "Email is not valid", regexp = "(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|\"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])*\")#(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21-\\x5a\\x53-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])+)\\])")
#NotEmpty(message = "Email cannot be empty")
private String email;
#Transient // meaning it will not be saved in DB
//#Size(min = 5, max = 15, message = "{register.password.size}")
private String plainPassword; // unencrytped
#Transient
private String repeatPassword;
#Column(nullable = true)
private String phone;
#Column(nullable = false, length = 500)
private String about;
#Column(nullable = true)
private String profilePic;
#Column(name="enabled")
private Boolean enabled = true;
}
I'm trying to use the spring Email core package in my spring boot project. I have added the dependency in my pom file but for some weird reason the import statement for import javax.validation.constraints.Email; is not getting resolved. Any idea why is this happening?? Here is the dependency , i have ...
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.9-SNAPSHOT</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.email</groupId>
<artifactId>esp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>esp</name>
<description>Email Service Provider Using Spring Boot</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.mysql</groupId>
<artifactId>mysql-connector-j</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

Answer 1

javax.validation.constraints.Email annotation depends on Jakarta Bean Validation providers for validation.
You could try to add spring-boot-starter-validation dependency to your pom.xml. This dependency contains all the required dependencies (including jakarta and hibernate-validator which is a compliant validator for this)
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>