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JAVA

Java Knowledge Challenge

Test your understanding of Java programming concepts with our engaging quiz! Designed for both beginners and experienced developers, this quiz will help you solidify your knowledge and uncover any gaps in your understanding.

Key features of the quiz:

10 multiple-choice questions covering fundamental Java concepts.
Track your progress and gain insights with each attempt.
Perfect for self-assessment or for educational purposes.

10 Questions2 MinutesCreated by CodingWizard321

1. Which of these packages contain all the collection classes?

A. java.lang

B. java.util

C. java.net

D. java.awt

2. Which of these classes is not part of Java’s collection framework?

A. Maps

B. Array

C. Stack

D. Queue

3. When does Exceptions in Java arises in code sequence?

A. Run Time

B. Compilation Time

C. Can Occur Any Time

D. None of the mentioned

4. Which of these class is related to all the exceptions that can be caught by using catch?

A. Error

B. Exception

C. RuntimeExecption

D. All of the mentioned

5. Which of these handles the exception when no catch is used?

A. Default handler

B. finally

C. Throw handler

D. Java run time system

6. What is synchronization in reference to a thread?

A. It’s a process of handling situations when two or more threads need access to a shared resource.

B. Its a process by which many thread are able to access same shared resource simultaneously.

C. Its a process by which a method is able to access many different threads simultaneously

D. Its a method that allow to many threads to access any information require.

7. What is multithreaded programming?

A. It’s a process in which two different processes run simultaneously.

B. It’s a process in which two or more parts of same process run simultaneously.

C. Its a process in which many different process are able to access same information.

D. Its a process in which a single process can access information from many sources.

8. Which of these statements is incorrect?

A. By multithreading CPU’s idle time is minimized, and we can take maximum use of it.

B. By multitasking CPU’s idle time is minimized, and we can take maximum use of it.

C. Two thread in Java can have same priority

D. A thread can exist only in two states, running and blocked.

9. Which of the following is incorrect statement about packages?

A. Interfaces specifies what class must do but not how it does.

B. Interfaces are specified public if they are to be accessed by any code in the program.

C. All variables in interface are implicitly final and static.

D. All variables are static and methods are public if interface is defined pubic.

10. Which of these is an incorrect statement?

A. String objects are immutable, they cannot be changed.

B. String object can point to some other reference of String variable.

C. StringBuffer class is used to store string in a buffer for later use.

D. None of the mentioned

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