Custom annotation processing while coding

The purpose of the project I'm working on is to handle annotation at compile time, it is not focused on what exactly I'm developing.

I took a simple subject for this and I'm writing a custom collection that will store elements and provide methods to manage them.

What I wanna do is to create an annotation @Contains, for example, to generate itemsContains method that could be processed while coding (instead of writing code manually).

public class Array {

    private List<String> items;

    public Array() {
        items = Arrays.asList("abc", "def", "xyz");
    }

    public boolean itemsContains(String expected) {
        return items.contains(expected);
    }
}

Generally, I want my class to look something like:

public class Array {

    @Contains
    private List<String> items;

    public Array() {
        items = Arrays.asList("abc", "def", "111");
    }
}

The important thing I want to reach is to have itemsContains method show up once the annotation is applied to a field. This is how it should look like:

https://imgur.com/QmSs0uw

Alternate existing examples are Lombok's @Getter/@Setter.

So what functionality or configurations should I implement to get the expected result? Would be grateful for some real implementations or guides how to perform it step by step.