Are you just starting out with Java programming? Our Java Basic Quiz is designed to help you test your understanding of fundamental concepts like variables, data types, loops, and classes. Ideal for beginners, this quiz is a great way to practice basic coding skills and build a strong foundation in Java.

Why Take This Quiz?

Test your basic Java knowledge
Learn by practicing beginner-level questions
Build a strong foundation for object-oriented programming

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Java (Basic)

Take our Java Basic Quiz to test your foundational Java knowledge. Perfect for beginners learning about variables, loops, and classes. Start now!

Max Time : 10 Min.

The number of attempts remaining is 5

Think about the number of bits

1 / 15

What is the size of an int in Java?

1) 64 bits

2) 32 bits

3) 16 bits

4) 8 bits

Think about combining strings

2 / 15

Which operator is used for concatenating strings in Java?

1) %

2) &

3) +

4) *

Think about fixed sizes in Java

3 / 15

What is the size of an int data type in Java?

1) 8 bytes

2) 4 bytes

3) 2 bytes

4) 16 bytes

One option is just a regular word

4 / 15

Which of the following is not a reserved keyword in Java?

1) static

2) volatile

3) const

4) goto

Think about floating-point numbers

5 / 15

Which data type is used for decimal values in Java?

1) int

2) double

3) char

4) boolean

Think about the starting point

6 / 15

Which method is the entry point of a Java program?

1) init()

2) start()

3) constructor()

4) main()

Think about threading basics

7 / 15

Which method is used to start a thread execution?

1) execute()

2) run()

3) start()

4) init()

Think about order of operations

8 / 15

What is the output of System.out.println(10 + 20 + "Java")?

1) 30Java

2) 1020Java

3) Java30

4) Java1020

Think about reserved words in Java

9 / 15

Which of the following is not a Java keyword?

1) include

2) volatile

3) extends

4) static

Think about encapsulation

10 / 15

Which access modifier is the most restrictive?

1) private

2) public

3) default

4) protected

Think about making a class unextendable

11 / 15

Which keyword is used to prevent inheritance in Java?

1) final

2) const

3) static

4) private

Think about the most open access level

12 / 15

Which access modifier makes a member visible to all classes?

1) private

2) protected

3) public

4) default

Think about post-condition checks

13 / 15

Which loop is guaranteed to execute at least once?

1) for

2) foreach

3) while

4) do-while

Think about measuring size

14 / 15

Which method is used to find the length of a string?

1) measure()

2) size()

3) length()

4) count()

Think about immutability

15 / 15

Which keyword is used to declare a constant in Java?

1) final

2) static

3) const

4) finalize

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Java Quiz (Basic)

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