Java

A vibrant and engaging illustration highlighting various elements of Java programming, such as code snippets, a computer screen displaying Java interfaces, and graphical representations of Java concepts like threads and JIT compilers, in a colorful and educational manner.

Java Knowledge Quiz

Test your understanding of Java programming concepts with this engaging quiz! Designed for beginners and experienced programmers alike, this quiz covers essential topics from syntax to advanced concepts.

Key Features:

10 challenging multiple-choice questions
Instant feedback on your choices
Score tracking to measure your progress

10 Questions2 MinutesCreated by CodingMaster42

1) What is correct syntax for main method of a java class?

A) public static int main(String[] args)

B) public int main(String[] args)

C) public static void main(String[] args)

D) None of the above.

2) What is the size of double variable?

A) 8 Bit

B) 16 bit

C) 32 bit

D) 64 bit

3) What is the default value of short variable?

A) 0.0

B) 0

C) Not defined

D) Null

4) What is an Interface?

A) An interface is a collection of abstract methods.

B) Interface is an abstract class.

C) Interface is an concrete class.

D) None of the above.

5) Dynamic binding uses which information for binding?

A) type

B) object.

C) Both of the above.

D) None of the above.

6) Which is the way in which a thread can enter the waiting state?

A) Invoke its sleep() method.

B) Invoke object's wait method.

C) Invoke its suspend() method.

D) All of the above.

7) Which method must be implemented by all threads?

A) wait()

B) start()

C) stop()

Run()

8) What is JIT compiler?

A) JIT improves the runtime performance of computer programs based on bytecode.

B) JIT is an application development framework.

C) JIT is an implementation of the Java Virtual Machine which executes Java programs.

D) None of the above.

9) Primitive data types are allocated on stack

A) True

B) False

10) Unary operators have right to left associativity is this __________

A) True

B) False

Java Knowledge Quiz

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