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Java Fundamentals Assessment

Authored by Pruthvi Deepam

Engineering

12th Grade

Used 3+ times

Java Fundamentals Assessment
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10 questions

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1.

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

What are the primitive data types in Java?

byte, short, int, long, float, double, char, boolean

text, number, flag

integer, decimal, character

string, list, map

2.

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

Explain the difference between 'if' and 'switch' statements.

'if' statements can only handle two conditions, while 'switch' can handle more than two.

The 'if' statement is for conditional branching, while 'switch' is for selecting among multiple cases based on a variable's value.

'if' statements evaluate expressions, while 'switch' evaluates boolean values.

'if' statements are used for loops, whereas 'switch' is used for functions.

3.

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

What is encapsulation in Object-Oriented Programming?

Encapsulation is the bundling of data and methods that operate on that data within a single unit, restricting access to some components.

Encapsulation is the method of exposing all data and methods to the public.

Encapsulation refers to the inheritance of properties from a parent class.

Encapsulation is the process of creating multiple instances of a class.

4.

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

How do you handle exceptions in Java?

Ignore exceptions and continue execution.

Use try-catch blocks to handle exceptions in Java.

Throw exceptions without handling them.

Use if-else statements to handle exceptions in Java.

5.

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

What is the purpose of the ArrayList class in Java?

The purpose of the ArrayList class in Java is to provide a dynamic array that can grow and shrink in size, allowing for flexible storage and manipulation of elements.

To create a multi-dimensional array in Java.

To implement a stack data structure in Java.

To provide a fixed-size array for storing elements.

6.

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

Describe the try-catch block in exception handling.

The try-catch block is a way to declare variables in programming.

The try-catch block is a mechanism for handling exceptions in programming, allowing for graceful error management.

The try-catch block is used to define functions in programming.

The try-catch block is a method for optimizing code performance.

7.

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

What is the difference between a HashMap and a TreeMap?

HashMap is unordered and faster (O(1)), while TreeMap is ordered and slower (O(log n)).

Both HashMap and TreeMap are unordered and have the same performance (O(n)).

HashMap is ordered and faster (O(1)), while TreeMap is unordered and slower (O(log n)).

TreeMap is faster (O(1)) and HashMap is slower (O(log n)).

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