Java Quizzes, Questions & Answers

Recent Java Quizzes

Some Important Over Java Basics Questions

Some important over Java Basics questions

Explore the fundamentals of Java through this engaging quiz titled 'Some important over Java Basics questions'. It assesses knowledge on object-oriented programming, data types, constants, and basic Java syntax, along with a...

Questions: 6 | Attempts: 131 | Last updated: May 6, 2024

Sample Question
Java is

A island

An object oriented programming language

A binary language

An assembler

Computer Science Java Quiz

This Computer Science Java Quiz assesses knowledge of Java programming fundamentals, including array handling, loop structures, and class organization. It is ideal for learners looking to test their understanding of basic Java...

Questions: 23 | Attempts: 1614 | Last updated: Jan 17, 2024

Sample Question
Refer to the following variable declaration for this question: int[] numbers = {1,2,3,4,5,6,7,8,9,10}; Which of the following is a valid conclusion based on this variable declaration?

Int[8] numbers = 9;

Numbers[2] = 2;

Int[9] numbers = 10;

Numbers[5] = 6;

Both a and c

Advanced Java Quiz

Have you practiced Java enough that you are ready to learn advanced Java? Take this advanced Java quiz, and see how much you have learned. This will examine your understanding of JSP, Servlet, and Design patterns. You will get an...

Questions: 22 | Attempts: 12225 | Last updated: Sep 1, 2024

Sample Question
Which method in the HttpServlet class services the HTTP POST request? (Select one)

DoPost(ServletRequest, ServletResponse)

DoPOST(ServletRequest, ServletResponse)

ServicePost(HttpServletRequest, HttpServletResponse)

DoPost(HttpServletRequest, HttpServletResponse)

Eclipse Java

Eclipse JAVA

This Eclipse JAVA quiz assesses knowledge in Java programming, focusing on thread handling, operations, and concurrency. It tests understanding of thread behavior, output predictions, and Java's fundamental concepts, enhancing...

Questions: 30 | Attempts: 229 | Last updated: Jul 12, 2023

Sample Question
Consider the following code: public class TestOne { public static void main(String args[]) { byte x = 3; byte y = 5; System.out.print((y%x) + ", "); System.out.println(y == ((y/x) *x +(y%x))); } } Which of the following gives the valid output for above?

Prints 2, false

Prints: 1, true

Prints: 2, true

Prints: 1, true

Java Core Mock Test 4

java core mock test 4

This 'java core mock test 4' assesses knowledge on Java core concepts such as exception handling, interfaces, abstract classes, and inheritance. It is designed to test understanding of code snippets, error identification, and...

Questions: 40 | Attempts: 96 | Last updated: Dec 7, 2023

Sample Question
Under which of the following scenarios a checked exception is thrown? (Choose 2)

A. Given username and password is checked with database and found invalid

B. 5th element of an array is accessed, whose size is 3

C. length() method is called on a String object, that is assigned to null

D. A file that actually does not exist, is opened for reading

E. An attempt to connect to the database is made but failed.

Core Java Test 4

CORE JAVA TEST 4

CORE JAVA TEST 4 assesses knowledge in Java programming, focusing on class instance comparison, BitSet collections, Java Map interface, ArrayList features, Enumeration interface, and SortedSet usage. Key for learners enhancing...

Questions: 40 | Attempts: 651 | Last updated: Sep 7, 2023

Sample Question
Which statements are true about comparing two instances of the same class,given that the equals() and hashCode() methods have been properly overridden? (choose all that apply)

If the equals()methood returns true,the hashCode() comparison==might return false.

If the equals()methood returns false,the hashCode() comparison==might return true.

If the hashCode() comparison==returns true,the equals() method must return true

If the hashCode() comparison==returns true,the equals() method might return true

If the hashCode() comparison!=returns true,the equals() method must return true

Java Core Mock Test-3

java core mock test-3

This Core Java mock test assesses knowledge of Java's access modifiers, inheritance, array initializations, and method overriding. It is designed to enhance understanding of Java programming principles and prepare learners for...

Questions: 35 | Attempts: 140 | Last updated: Aug 6, 2024

Sample Question
Which access modifier have almost identical behaviour as that of default.?

Protected

Public

Private

Both public and protected

Core Java Hardest Test: Trivia Quiz!

Do you know the core Java language? Java is a classed based language that was made to have minimum implementation dependencies. It is a general-purpose programming language that allows application developers to run anywhere....

Questions: 40 | Attempts: 148 | Last updated: Mar 21, 2023

Sample Question
Choose the possible constructor arguments of the Float wrapper class.

Float

Double

String

Int

Byte

Core Java Mock Test-3

CORE JAVA MOCK TEST-3

INTRODUCTION TO OOPS INTRODUCTION TO JAVA AND SDE LANGUAGE FUNDAMENTALS AND OPERATORS

Questions: 45 | Attempts: 683 | Last updated: Sep 5, 2023

Sample Question
Consider the following code: 1. class Test { 2. public static void main(String args[]) { 3. double d = 12.3; 4. Dec dec = new Dec(); 5. dec.dec(d); 6. System.out.println(d); 7. } 8. } 9. class Dec{ 10. public void dec(double d) { d = d - 2.0d; } 11. } Which of the following gives the correct value printed at line 6?

Prints: 12.3

Prints: -2.0

Prints: 10.3

Prints: 0.0

Java Programming Competition I

JAVA Programming Competition I

The 'JAVA Programming Competition I' quiz assesses knowledge in Java programming, covering data types, operators, and code execution outcomes. It is designed for learners to validate and enhance their understanding of Java,...

Questions: 50 | Attempts: 1758 | Last updated: Jul 4, 2024

Sample Question
What is the range of an int data type in Java?

–2^15 to 2^15 – 1

0 to 2^15

–2^31 to 2^31 – 1

0 to 2^31

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