In this post under Lombok, I will explain with example what is the purpose of “@RequiredArgsConstructor” annotation and how to use it with “@NonNull” annotation. This annotation is applied at the class level and when applied it generates constructor with a parameter for each required fields. Note: It will also add a parameter for non-initialized…… Continue reading Using @RequiredArgsConstructor and @NonNull annotation example
Month: October 2023
Using @EqualsAndHashCode cacheStrategy example
In this post under Lombok, I will explain with example the purpose of “cacheStrategy” attribute of “@EqualsAndHashCode” annotation. Just for recap, the annotation “@EqualsAndHashCode” when annotated to a POJO class, it generates “equals” and “hashCode” methods. Whenever the “hashCode” method of a POJO class is called, the hash is computed. To avoid computing of hashCode…… Continue reading Using @EqualsAndHashCode cacheStrategy example
Using @EqualsAndHashCode doNotUseGetters attribute example
In this post under Lombok, I will explain with example the purpose of “doNotUseGetters” attribute of “@EqualsAndHashCode” annotation. In a POJO class, we usually have getter method to return a formatted value of the actual value. For example, if we have a requirement where a employee has salary information stored as decimal but if he…… Continue reading Using @EqualsAndHashCode doNotUseGetters attribute example
Using @NoArgsConstructor annotation
In this post under Lombok, I will show with example the purpose of “@NoArgsConstructor” annotation. This annotation should be applied at the class level. When applied it generates a no argument constructor. Below is an example of how to use it Person class package package15; import lombok.NoArgsConstructor; @NoArgsConstructor public class Person { private String firstName;…… Continue reading Using @NoArgsConstructor annotation
Using @EqualsAndHashCode callSuper attribute
In this post under Lombok I will explain the purpose and how to use the “@EqualsAndHashCode” annotation’s “callSuper” attribute. In my previous post under “Using @EqualsAndHashCode annotation”, I explained with example the purpose of that annotation. Just for recap when this annotation is applied at class level it will automatically generates “equals” and “hashCode” methods…… Continue reading Using @EqualsAndHashCode callSuper attribute
Using @EqualsAndHashCode.Include annotation
In this post under lombok. I will explain the purpose and how to use “@EqualsAndHashCode.Include” annotation. In previous post “Using @EqualsAndHashCode.Exclude” I introduced you to “@EqualsAndHashCode.Exclude” annotation. Using “@EqualsAndHashCode.Exclude” annotation we are telling Lombok which fields should not be considered when generating “equals” and “hashCode” method of a POJO class. Now “@EqualsAndHashCode.Include” is reverse of…… Continue reading Using @EqualsAndHashCode.Include annotation
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