🚀 Core Java Crash Course (3-Hour Outline)

🕒 Hour 1 – Introduction & Java Fundamentals (Basics + Syntax)

✅ Topics:

• What is Java? Why Java? (Platform Independence, OOP, etc.)

• Java Editions (JSE, JEE, JME) – Focus on Java SE

• Java Program Structure

• First Program: HelloWorld.java

• Data Types and Variables

• Operators (Arithmetic, Relational, Logical)

• Control Flow Statements

  • if, else, switch

  • Loops: for, while, do-while

🔧 Hands-on:

• Print statement practice

• Input from user using Scanner

• Simple calculator (if-else + switch)

🕒 Hour 2 – Object-Oriented Programming (OOP) Concepts

✅ Topics:

• Class and Object

• Constructor (default, parameterized)

• Methods (void, return types, method overloading)

• Access Modifiers

• Encapsulation (using private fields + public getters/setters)

• Inheritance (single inheritance, super keyword)

• Polymorphism

  • Method Overloading

  • Method Overriding (brief)

• Introduction to Abstract Classes and Interfaces

🔧 Hands-on:

• Create a Student class with attributes and methods

• Demonstrate inheritance with Person → Employee

• Method overloading & overriding examples

🕒 Hour 3 – Arrays, Exception Handling, and Basic File I/O

✅ Topics:

• Arrays

  • One-dimensional arrays

  • Enhanced for-loop

• Exception Handling

  • try-catch-finally

  • throw and throws

• File Handling (Basics)

  • Writing to a file

  • Reading from a file (using FileReader / BufferedReader)

• Overview of commonly used Java Libraries

🔧 Hands-on:

• Store and print student marks using an array

• Handle input exception (divide by zero, input mismatch)

• Write/read a simple text file

🎯 Final Wrap-up (10–15 mins)

• Recap of key topics

• Quiz or rapid Q&A session

• Resources for further learning (e.g. Java docs, online platforms)

• Mini-project idea suggestion (e.g. Student Management CLI app)

✅ Prerequisites:

• Basic understanding of programming logic (optional)

• Java JDK + IDE (e.g. Eclipse or IntelliJ) pre-installed