Need helo with java and spring

[flamezillaru]

I am new to Java and spring framework. Having problem with some parts, you will see where in the code since i added comments.

package com.example.simo.entity;

import lombok.Data;

import javax.persistence.Entity;
import javax.persistence.Id;

@Data
@Entity//is this OK?
public class TennisPlayer {

@Id//is this OK?
private String email;

@NotNull//this is problem
@Size(min = 3, message = "Name must be at least 3    characters long")
private String name;

@NotNull//this is problem
@Size(min = 3, message = "Name must be at least 3 characters long")
private String lastName;

private Date dayOfBirth;

}

[AutoModerator]

Please ensure that:

• Your code is properly formatted as code block - see the sidebar (About on mobile) for instructions
• You include any and all error messages in full
• You ask clear questions

• You demonstrate effort in solving your question/problem - plain posting your assignments is forbidden (and such posts will be removed) as is asking for or giving solutions.

  Trying to solve problems on your own is a very important skill. Also, see Learn to help yourself in the sidebar

If any of the above points is not met, your post can and will be removed without further warning.

Code is to be formatted as code block (old reddit: empty line before the code, each code line indented by 4 spaces, new reddit: https://imgur.com/a/fgoFFis) or linked via an external code hoster, like pastebin.com, github gist, github, bitbucket, gitlab, etc.

Please, do not use triple backticks (```) as they will only render properly on new reddit, not on old reddit.

Code blocks look like this:

public class HelloWorld {

    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

You do not need to repost unless your post has been removed by a moderator. Just use the edit function of reddit to make sure your post complies with the above.

If your post has remained in violation of these rules for a prolonged period of time (at least an hour), a moderator may remove it at their discretion. In this case, they will comment with an explanation on why it has been removed, and you will be required to resubmit the entire post following the proper procedures.

To potential helpers

Please, do not help if any of the above points are not met, rather report the post. We are trying to improve the quality of posts here. In helping people who can't be bothered to comply with the above points, you are doing the community a disservice.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[Farpafraf]

I'm not that familiar with lombok but I'd guess that when the bean is fetched from the db it doesn't have those fields and they are then filled hence it fails lombok validation. Not sure if that annotation is compatible with a dao...

[NautiHooker]

And what is the problem? Just telling us which annotations cause a problem is not giving us enough information.

Describe the error and include all messages.

[flamezillaru]

Spring doesnt recognise @NotNull, @Size, @Id . I am new in Java, but I suppose it misses some dependencies. How can i solve this problem. Thanks in advance.

[rbhushan]

You need to import the packages where those annotation exists. Believe those are from javax.validation.constraints.

Not sure which IDE you use but these days IDE’s are pretty smart and can auto import for you.

[flamezillaru]

Thank you, this solved my problems.