cgtdnpck :
I’m using lombok @Builder. When I place @Builder annotation on the MyExample class, @Builder generates public builder() method. But I want to make private builder() method. Unfortunately @Builder annotation does not have access option. How should I do?
Benny Bottema :
You can overwrite the generated builder method to make it private. As far as I know, that's the only way:
@Builder
public static class Foo<F, T> {
// hide lombok's builder method:
private static FooBuilder builder() {
return new FooBuilder();
}
}
However, this enables you to do some more advanced initialization of the builder. For example, you can initialize the builder with some defaults and also kickstart the builder with initial user-supplied values.
Here's an example:
@Builder
public static class Car {
// kickstart builder method available to user
public static CarBuilder builder(String brand, String model) {
return builder().brand(brand).model(model);
}
// hide lombok's own builder method and apply some defaults:
private static CarBuilder builder() {
return new CarBuilder().color(System.getenv("DEFAULT_CAR_COLOR"));
}
}
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