I recently learned about object creation using @builder. But suddenly, I wonder if @Builder can be used to modify an object that has already been created. When I try to modify an object using @setter, the advantage of creating a constructor with @builder seems to disappear. So I tried to modify only some variables using @builder, but it seems to
Tag: lombok
ERROR: org.codehaus.jackson.map.JsonMappingException
I’m using lombok + Java to otimizate the application. The class has the tags @Data , @EqualsAndHashCode(callSuper = false), @NoArgsConstructor, @AllArgsConstructor e @Builder before signature’s class. When I run, It shows the error below: ERROR: org.apache.cxf.jaxrs.JAXRSRuntimeException: org.codehaus.jackson.map.JsonMappingException: No suitable constructor found for type [simple type, class java.time.LocalDateTime]: can not instantiate from JSON object (need to add/enable type information?) at [Source:
Which choice is better for generating equals() and hashCode() methods in Hibernate?
I create equals() and hashCode() methods in each Hibernate entity (if there is no inheritance) in my Java app. However, I am a little bit confused and wanted to be sure if I define it properly. Could you please clarify the following issues? In IntelliJ, when I use the “Generate” feature (via Alt + Insert), there are some templates like
How to Use @JsonProperty With Lombok?
Suppose we have a json response that we want to map it to our java class. I had a data class that mapped access_token field in the json to accessToken field in the code. I used to use @JsonProperty annotation on getters and setters. Then I decided to use Lombok annotations @Getter and @Setter. Since I do not have a
Lombok @Builder How create a field with timestamp of value change?
I have the following class: Is there any way to add a timestamp for when the class is initialized and when the value is changed/edited/updated? I have attempted adding: But does not seem to be what I am looking for. Answer You could achieve it with a few options. However, Lombok could not help you will it. You have to
Passing generic types inner class
Here is following example: Is there a way just to pass the generic <String> one time? Actually the inner class should already know its type. Answer That is a limitation of the Java compiler. Although it looks obvious in this case that the type parameter must be String, inferring that is not as easy as it seems to be: The
Predicates of a class are not able to use the instance variable if the class is initialised via Lombok
I am initializing a class via Lombok Builder. Through which I am initializing a variable. But that’s variable’s value is not available when I use that in a Predicate definition. My code looks this: While debugging, the value of maxCount was not getting initialized to 10. It remained 0. If I remove the Lombok builders and do it in normal
NoArgsConstructor and AllArgsConstructor annotation on Child class for parent constructors
Hello to the overflow community, I am struggling on an inheritance problem with Lombok. I’m trying to add both annotation @AllArgsConstructor and @NoArgsConstructor on a child class in order to use the parent lombok constructors but got the error “Duplicate method Child()”. Parent class: Child class: The error message: Duplicate method Child() in type Child Java(67109219) Thanks to the @rentox98
@Data annotion not working to set the value in Java
I have this POJO class: I am trying to set the value of orderNbr from a different class. I am trying to update the value of orderNbr in my XML output to 89898 and I want to do it using @Data. But when I am doing fo.setOrderNbr(89898989)I am getting a compile time error as Error:(56, 132) java: incompatible types: void
StackOverflowError Springboot OneToMany BiDirectional Mapping
I am currently coding a project, which requires me to map in between two entities: An account and a member. An account can have multiple members, whilst the member can only have one account. After I’ve finished coding the bidirectional way, everything was working and I got the response I wanted, which is the members only. From here on the