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

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

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Answer

The jar containing this class must be added to the build path of your project: http://mvnrepository.com/artifact/javax.validation/validation-api/1.0.0.GA

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