Error in Java Import statement "The import javax.validation.constraints.NotNull cannot be resolved"

Question

Iam new to Java and Spring Framework. After developing Spring roo project, I found following errors in class:

The import javax.validation.constraints.NotNull cannot be resolved

NotNull cannot be resolved to a type

Iam using STS 3.1.0.RELEASE

Can some one guide me what Iam doing and how it can be rectified.

Thanks in advance

Answer 1

Iam new to Java and Spring Framework. After developing Spring roo project, I found following errors in class :

The import javax.validation.constraints.NotNull cannot be resolved

NotNull cannot be resolved to a type

Iam using STS 3.1.0.RELEASE

Can some one guide me what Iam doing and how it can be rectified.

Thanks in advance

Answer 2

Iam new to Java and Spring Framework. After developing Spring roo project, I found following errors in class :

The import javax.validation.constraints.NotNull cannot be resolved

NotNull cannot be resolved to a type

Iam using STS 3.1.0.RELEASE

Can some one guide me what Iam doing and how it can be rectified.

Thanks in advance

Answer 3

Iam new to Java and Spring Framework. After developing Spring roo project, I found following errors in class :

The import javax.validation.constraints.NotNull cannot be resolved

NotNull cannot be resolved to a type

Iam using STS 3.1.0.RELEASE

Can some one guide me what Iam doing and how it can be rectified.

Thanks in advance

Answer 4

from Spring boot 2.3 version you have to add this dependency in your pom.xml

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-validation</artifactId>
</dependency>

the web starters no longer contains the validation so you have to add it manually

Answer 5

Iam new to Java and Spring Framework. After developing Spring roo project, I found following errors in class :

The import javax.validation.constraints.NotNull cannot be resolved

NotNull cannot be resolved to a type

Iam using STS 3.1.0.RELEASE

Can some one guide me what Iam doing and how it can be rectified.

Thanks in advance

Answer 6

Iam new to Java and Spring Framework. After developing Spring roo project, I found following errors in class :

The import javax.validation.constraints.NotNull cannot be resolved

NotNull cannot be resolved to a type

Iam using STS 3.1.0.RELEASE

Can some one guide me what Iam doing and how it can be rectified.

Thanks in advance

Answer 7

Iam new to Java and Spring Framework. After developing Spring roo project, I found following errors in class :

The import javax.validation.constraints.NotNull cannot be resolved

NotNull cannot be resolved to a type

Iam using STS 3.1.0.RELEASE

Can some one guide me what Iam doing and how it can be rectified.

Thanks in advance

Answer 8

Iam new to Java and Spring Framework. After developing Spring roo project, I found following errors in class :

The import javax.validation.constraints.NotNull cannot be resolved

NotNull cannot be resolved to a type

Iam using STS 3.1.0.RELEASE

Can some one guide me what Iam doing and how it can be rectified.

Thanks in advance

Answer 9

Intellij solution: After pasting the code below you need to close intellij (entirely) then open again.

pasted the following:

    <dependency>
         <groupId>javax.validation</groupId>
         <artifactId>validation-api</artifactId>
         <version>1.0.0.GA</version>
    </dependency>

Answer 10

<dependency>
    <groupId>javax.validation</groupId>
    <artifactId>validation-api</artifactId>
    <version>1.0.0.GA</version>
</dependency>

<dependency>
    <groupId>jakarta.validation</groupId>
    <artifactId>jakarta.validation-api</artifactId>
    <version>2.0.2</version>
</dependency>

there are also following versions there.

Answer 11

If you are using gradle, in "build.gradle" file add the following in the "dependencies"

implementation 'org.springframework.boot:spring-boot-starter-validation'

testImplementation 'org.springframework.boot:spring-boot-starter-test'

Answer 12

If you are using SpringBoot and you are migrating to Spring Boot 3 , you need to replace all your references of javax.validation with jakarta.validation.

Check the release notes of Spring Boot:

https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-3.0-Release-Notes