#316 Number List with extends

Companies:

Digitalleague

Themes:

JavaCollections & GenericsPractice

Which numbers can be added? Is everything written correctly?

List<? extends Number> nums = new ArrayList<>();
nums.add(1);
nums.add(2.1);
nums.add(33L);

Question review

Mentor

Answer as you would in a real interview. I’ll ask follow-up questions, then compare your answer with the reference answer and show your accuracy as a %.

Sign in to start the dialogue The mentor keeps the context of the current question and your previous messages.