9th Grade Java Quizzes, Questions & Answers

Recent Java Quizzes

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, 2025

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

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, 2025

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, 2025

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

Protected

Public

Private

Both public and protected

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, 2025

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, 2025

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

Java Fundamentals Test

JAVA FUNDAMENTALS TEST

This JAVA FUNDAMENTALS TEST assesses knowledge in Java programming, covering string operations, float declarations, character ranges, Java keywords, and reserved words. Ideal for learners aiming to enhance their Java programming...

Questions: 30 | Attempts: 4609 | Last updated: Jan 12, 2025

Sample Question
Choose the operations that can be performed on String objects: (A) + (B) + = (C) - (D) % (E) ^

(A)

(D)

(A) and (B)

(D) and (E)

None of the above

Java Mock Test 1

Java mock test 1

Java mock test 1 assesses knowledge of Java programming fundamentals, including data types, operators, and comparison of string objects. It is designed for learners to validate their understanding and readiness in Java, focusing...

Questions: 30 | Attempts: 109 | Last updated: Oct 14, 2025

Sample Question
Which of the following lines will compile without warning or error.

Float f=1.3;

Char c="a";

Byte b=257;

Boolean b=null;

int i=10;

Stia1013(2)

STIA1013(2)

STIA1013(2) is a quiz designed to assess knowledge in Java programming, focusing on data types, variables, operators, and memory usage. It tests understanding of constants, primitive types, and effective use of data types in...

Questions: 17 | Attempts: 552 | Last updated: Mar 21, 2025

Sample Question
When data cannot be changed after a program is compiled,the data is_______________

A.constant

B.variable

C.volatile

D.mutable

Java: Swing Frames Trivia Quiz

What do you know about Java? This is a quiz on Java Swing frames. Are you ready for this Java: Swing Frames Trivia Quiz. J Frames work as the main window where components like labels, buttons, and text fields get added to create...

Questions: 10 | Attempts: 2922 | Last updated: Jul 16, 2025

Sample Question
In Java, what do you name an area on the screen that has fine borders and various buttons on the top border?

A window.

A screen.

A box.

A frame.

Java Fundamentals

JAVA FUNDAMENTALS

This JAVA FUNDAMENTALS quiz assesses key concepts in Java programming, including file naming, class construction, string manipulation, and object instantiation. It is designed for learners to validate their understanding and...

Questions: 25 | Attempts: 733 | Last updated: Mar 19, 2025

Sample Question
import myLibrary.*; public class ShowSomeClass { // code for the class... } What is the name of the java file containing this program?

MyLibrary.java

ShowSomeClass.java

ShowSomeClass

ShowSomeClass.class

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