Online Quiz Attempt – Play & Test Your Knowledge

Question 1

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Which of the following is NOT a valid access modifier in Java?

public private protected friend

Question 2

2 / 10

What is the purpose of the 'finally' block in a try-catch-finally statement?

To handle exceptions. To define the code that may throw an exception. To execute code regardless of whether an exception is thrown or not. To terminate the program.

Question 3

3 / 10

Which data structure follows the Last-In, First-Out (LIFO) principle?

Queue Stack Linked List Tree

Question 4

4 / 10

What is the purpose of the 'static' keyword in Java?

To prevent inheritance. To make a variable constant. To associate a member with the class itself, rather than with instances of the class. To create a thread.

Question 5

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Which of the following is a correct way to create an object of a class named 'MyClass'?

MyClass object = new MyClass; MyClass object = new MyClass(); MyClass object = create MyClass(); MyClass object = MyClass.new();

Question 6

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What is the role of the Java Virtual Machine (JVM)?

To compile Java code. To interpret and execute Java bytecode. To manage the operating system. To create graphical user interfaces.

Question 7

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Which of the following is an example of method overloading?

Defining two methods with the same name and the same parameters in the same class. Defining two methods with different names but the same parameters in the same class. Defining two methods with the same name but different parameters in the same class. Defining two methods with the same name and the same parameters in different classes.

Question 8

8 / 10

Which interface is used to implement the 'sort' method in Java?

Serializable Comparable Cloneable Runnable

Question 9

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What is the primary purpose of the 'garbage collector' in Java?

To optimize code execution. To free up memory occupied by objects that are no longer in use. To handle exceptions. To manage threads.

Question 10

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What is the difference between '==' and '.equals()' in Java?

'==' compares the values of primitive types and object references, while '.equals()' always compares the values. '==' compares the references of objects, while '.equals()' compares the content of objects (if properly overridden). '==' is used for strings, while '.equals()' is used for other objects. There is no difference between them.

Quizzes on Arrays and Strings