The question is actually asked in an interwiew. The interviewers does not seek 100% definate/correct answer to such questions.
From that point of view, I think, one can answer the question of Java being an purely OO in affirmative and argue that in java there are Wrapper classes (Objects) for every primitive type and one can use Interger Object in place of int primitive wherever needed.
In any case, whether you say yes or no, the interviewer will challenge your position on such issues. So just pick up one line of theory which you are comfortable in and defend your position in all possible ways.
Thats the way in an interview (not life