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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 7•Chapter 2

Real-World Project: Error-Handling in a File Reader Application

Summary

The tutorial covers writing data to a text file in Java using BufferedWriter. Create a BufferedWriter object by passing a FileWriter with the file name, such as output.txt. Import java.io.BufferedWriter and java.io.FileWriter. Handle IOException using a try-catch block. Once the object is set up, the writing process is straightforward.

Concept Check

0/5

In Java, what exception must be handled when creating a FileWriter?

Why use try-catch with BufferedWriter in file writing?

What happens if IOException is not handled in FileWriter?

In error-handling, what method is used for exceptions in file IO?

How does Java ensure resource closure in file operations?

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