Java Quiz: Test Your Knowledge¶
Part 1: Basics & Syntax¶
1. What is the correct way to create an object called myObj of MyClass?
- A) class myObj = new MyClass();
- B) MyClass myObj = new MyClass();
- C) new MyClass myObj = MyClass();
- D) class MyClass = new myObj();
Answer: B
2. Which keyword is used to create a class in Java?
- A) class
- B) className
- C) MyClass
- D) struct
Answer: A
3. How do you insert COMMENTS in Java code?
- A) # This is a comment
- B) // This is a comment
- C) /* This is a comment
- D) <!-- This is a comment -->
Answer: B
Part 2: OOP & Collections¶
4. Which keyword is used to inherit a class in Java?
- A) inherits
- B) implements
- C) extends
- D) base
Answer: C
5. Which method can be used to find the length of a string?
- A) length()
- B) len()
- C) getSize()
- D) getLength()
Answer: A
6. Which class is used to create a resizable array?
- A) Array
- B) ArrayList
- C) LinkedList
- D) List
Answer: B
Career Readiness
Try to solve these without looking at the answers. These types of questions are common in board exams and junior developer interviews!