CourseGenix

Java Fundamentals

5 Units21 Lessons

Unit 1

Basics

Introduction to Java Syntax and Hello World Program

Understanding Variables and Data Types in Java

Basic Operators in Java

Real-World Project: Building a Simple Calculator in Java

Input and Output Operations in Java

Unit 2

Control Structures and Loops

Real-World Project: Creating a Number Guessing Game with Loops

Implementing For and While Loops in Java

Using If-Else and Switch Statements in Java

Unit 3

Methods and Functions

Defining and Calling Methods in Java

Working with Parameters and Return Types in Java Methods

Method Overloading in Java

Real-World Project: Developing a String Utility Methods Library

Unit 4

Object-Oriented Programming

Creating Classes and Objects in Java

Inheritance and Polymorphism in Java

Encapsulation and Abstraction in Java

Using Interfaces and Abstract Classes in Java

Real-World Project: Designing a Basic Inventory Management System

Unit 5

Exception Handling and File I/O

Handling Exceptions with Try-Catch in Java

Creating and Using Custom Exceptions in Java

Reading and Writing Files in Java

Real-World Project: Building a Simple Text File Processor

Unit 2•Chapter 2

Implementing For and While Loops in Java

Summary

Summarize YouTube transcripts to 250 words or less, exclude sponsors and unrelated content, avoid introductory statements.

Concept Check

0/10

What is the output of this Java for loop: for(int i=0; i<3; i++) { System.out.print(i); }

012

0123

No output

123

In Java, how does a while loop differ from a for loop in structure?

While loop uses condition only

For loop has initialization

For loop lacks condition

While loop is faster

What causes an infinite loop in a while loop if condition is always true?

Loop runs forever

Error at compile time

Program crashes immediately

Loop executes once

In nested for loops, what is the time complexity of two loops each running n times?

O(n)

O(n squared)

O(1)

O(n log n)

How can you exit a while loop early in Java?

Using break statement

Using continue statement

With return keyword only

By changing loop variable

In which scenario is a while loop preferred over a for loop in Java?

When iterations are unknown in advance

For known number of iterations

When iterations are unknown in advance

For array processing only

What occurs if a while loop's condition is false initially?

The loop body is skipped

Compilation error happens

Infinite loop occurs

The loop body is skipped

When is the condition evaluated in a do-while loop?

At the loop's start

After the loop body executes

Before the loop body

After the loop body executes

How do you terminate a for loop early in Java?

By using the break statement

With a return statement

Using the continue keyword

By using the break statement

What does continue do in a while loop?

Skips to next iteration

Skips to next iteration

Restarts the loop condition

Exits the loop entirely

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