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AP Computer Science a Flashcards: Arraylist Methods

Study Arraylist Methods in AP Computer Science a with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Identify the method that removes an element at a specified index in an ArrayList.

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ANSWER

remove(int index). Removes by index and returns the removed element.

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AP Computer Science a: Data Collections

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This deck focuses on Arraylist Methods, giving you a quick way to review the definitions, rules, and examples that matter most for AP Computer Science a.

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Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 26Practice questions for this set
Identify the error in this student database code and choose the best correction. 
import java.util.ArrayList;

public class StudentDemo {
    public static void main(String[] args) {
        ArrayList<String> students = new ArrayList<String>();
        students.add("Mia");
        students.add("Noah");

        students.remove("0"); // intended to remove first student
        System.out.println(students.size());
    }
}
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