Explore topic-wise MCQs in Java.

This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Java knowledge and support exam preparation. Choose a topic below to get started.

1.

{A 1, B 1, C 1}

A. {A, B, C}
B. {A-1, B-1, C-1}
C. {A=1, B=2, C=3}
Answer» B. {A-1, B-1, C-1}
Discussion
2.

Which of these methods can be used to obtain set of all keys in a map?

A. getAll()
B. getKeys()
C. keyall()
D. keySet()
Answer» E.
Discussion