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Java Fundamentals

7 Units35 Lessons
Unit 1

Basics

Introduction to Java and Its History
Setting Up Your Java Development Environment
Understanding Java Comments and Code Structure
Real-World Project: Creating a Simple Greeting Application
Basic Java Syntax and Hello World Program
Unit 2

Variables and Data Types

Exploring Primitive Data Types
Working with Reference Data Types and Strings
Type Casting and Conversion Techniques
Declaring and Initializing Variables in Java
Real-World Project: Building a Basic Calculator Tool
Unit 3

Control Flow

Conditional Statements with If-Else
For and While Loops for Repetition
Nested Loops and Conditional Combinations
Switch Statements for Multiple Choices
Real-World Project: Developing a Number Guessing Game
Unit 4

Methods

Defining and Calling Methods
Passing Parameters and Arguments
Return Types and Method Overloading
Scope and Lifetime of Variables in Methods
Real-World Project: Implementing a Utility Method Library
Unit 5

Classes and Objects

Creating and Using Classes
Understanding Objects and Instantiation
Constructors and Their Role
Real-World Project: Designing a Basic Inventory Management System
Access Modifiers for Class Members
Unit 6

Inheritance and Polymorphism

Real-World Project: Building a Shape Hierarchy Application
Understanding Polymorphism and Dynamic Binding
Abstract Classes and Interfaces
Overriding Methods and Super Keyword
Implementing Inheritance in Java
Unit 7

Exception Handling

Creating Custom Exception Classes
Real-World Project: Error-Handling in a File Reader Application
Basics of Exceptions and Error Types
Using Try-Catch and Finally Blocks
Throwing and Propagating Exceptions
Unit 2•Chapter 5

Real-World Project: Building a Basic Calculator Tool

Summary

The video demonstrates creating a simple calculator in Java using switch case. It handles addition, subtraction, multiplication, and division of two numbers. Users select an operation by entering a number (1 for add, 2 for subtract, 3 for multiply, 4 for divide), then input the two numbers. The program uses variables for the operator and numbers, displays operation options, and employs the Scanner class to read user inputs from the console.

Concept Check

0/5

What is the purpose of the switch case in the calculator program?

How is user input for the operator captured in Java?

What happens if no case matches in the switch?

Which variable stores the user's chosen operation?

What data type is likely used for the operator?

PreviousDeclaring and Initializing Variables in Java