ArrayList Methods

AP Computer Science A· difficulty 3/5

Check whether list has no elements:

A
$list.isEmpty()$
B
$Both work; isEmpty is more readable$
check_circle
C
$list == null$
D
$list.size() == 0$

Explanation

Both equivalent; isEmpty() is idiomatic.

Want 10 more like this — adaptive to your weak spots?

Practice 10 like thisarrow_forward Predict my AP score

Related questions

auto_awesomeAll Tools question_answerHomework Q&A menu_bookAP & SAT Prep timelineLearn Mode