Multiple `@Inject` constructors foundJAVA-W1074

There should only be one constructor that is annotated with @Inject in a class.

@Inject annotation is used to indicate that a particular constructor will be used by some 3rd-party code (e.g.: a framework) to construct instances of a class. In the presence of multiple @Inject constructors, frameworks may not reliably choose a constructor. Furthermore, different versions of the same framework may end up choosing different constructors leading to different runtime behavior of the program.

Bad Practice

import javax.inject.Inject;

public class Klass {
    @Inject
    public Klass() {
        // First `@Inject` constructor.
    }

    @Inject
    public Klass(int input) {
        // Second `@Inject` constructor.
    }
}

Recommended

Make sure there is only one @Inject constructor in every class.

import javax.inject.Inject;

public class Klass {
    @Inject
    public Klass() {
        // Firs `@Inject` constructor.
    }

    public Klass(int input) {
        // Second `@Inject` constructor.
    }
}