How does @value in lombok work in this example

Asked Jul 25 '20 at 14:43

Active Jul 25 '20 at 14:57

Viewed 175 times

This is my simple class

@Value
public class Task {
    private static int numberOfTasks = 0;
    private int id = ++numberOfTasks;
    private String name;
    private Timestamp startTime;
    private Timestamp endTime;
}

Reading the Documentation of @Value, It says:

In practice, @Value is shorthand for: final @ToString @EqualsAndHashCode @AllArgsConstructor @FieldDefaults(makeFinal = true, level = AccessLevel.PRIVATE) @Getter,

So that means there is a AllArguConstructor. However, If I try to make the field as final, I get a compiler error that the filed is not initialised.

(though also Lombok claims to make the field as final in the case of @Value)

Could anyone help here?

This is what I mean:

edited Jul 25 '20 at 14:57

asked Jul 25 '20 at 14:43

Marco Dinatsoli

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Which field are you trying to set as final? – Dani Mesejo Jul 25 '20 at 14:49
@DaniMesejo I'd like all of them to be final, except the static one of course. – Marco Dinatsoli Jul 25 '20 at 14:50
@DaniMesejo to be more clear, I'd like name, start time and end time to be in the constructor, while the id is assigned automatically. though all fields should be final except the static one. – Marco Dinatsoli Jul 25 '20 at 14:51
I'm not able to reproduce I'm using Java 11 and Lombok 1.18.12 – Dani Mesejo Jul 25 '20 at 14:54
@DaniMesejo I am using java 8 with lombok 1.18.12 – Marco Dinatsoli Jul 25 '20 at 14:56
Have you tried compiling not using Intellij? Perhaps this can help: https://stackoverflow.com/questions/24006937/lombok-annotations-do-not-compile-under-intellij-idea or this https://www.baeldung.com/lombok-ide – Dani Mesejo Jul 25 '20 at 15:03
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@DaniMesejo funny enough, If I compile with maven, it works. So it is an intellij issue then. – Marco Dinatsoli Jul 25 '20 at 15:32
@DaniMesejo I installed lombok plugin in interij and that helped. thank you – Marco Dinatsoli Jul 25 '20 at 17:58

How does @value in lombok work in this example

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