I am trying to see if I can replace my existing Pojos with the new Record classes in Java 14. But unable to do so. Getting following error: 

> 
> com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot
>  construct instance of `com.a.a.Post` (no Creators, like default
>  construct, exist): cannot deserialize from Object value (no delegate-
>  or property-based Creator)
> 
> 
> 

I get that the error is saying the record has no constructors, but from what I see the record class takes care of it in the background and relevant getters are also set in the background (not getters exactly but id() title() and so on without the get prefix). Is it cos Spring has not adopted the latest Java 14 record yet? Please advice. Thanks. 

I am doing this in Spring Boot version 2.2.6 and using Java 14. 

The following works using the usual POJOs.

PostClass 

```
public class PostClass {
    private int userId;
    private int id;
    private String title;
    private String body;

    public int getUserId() {
        return userId;
    }

    public void setUserId(int userId) {
        this.userId = userId;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getBody() {
        return body;
    }

    public void setBody(String body) {
        this.body = body;
    }
}

```

Method to call rest service which works now as I am using the above POJO. 

```
public PostClass[] getPosts() throws URISyntaxException {
    String url = "https://jsonplaceholder.typicode.com/posts";
    return template.getForEntity(new URI(url), PostClass[].class).getBody();
}

```

But if I switch to following where I am using record instead, I am getting the above error.

The new record class. 

```
public record Post(int userId, int id, String title, String body) {
}

```

Changing the method to use the record instead which fails. 

```
public Post[] getPosts() throws URISyntaxException {
    String url = "https://jsonplaceholder.typicode.com/posts";
    return template.getForEntity(new URI(url), Post[].class).getBody();
}

```

EDIT: 

Tried adding constructors as follows to the record Post and same error: 

```
public record Post(int userId, int id, String title, String body) {
    public Post {
    }
}

```

or 

```
public record Post(int userId, int id, String title, String body) {
    public Post(int userId, int id, String title, String body) {
        this.userId = userId;
        this.id = id;
        this.title = title;
        this.body = body;
    }
}

```