JAVA-STEP-COURSE

This repository contains Java programming files created while learning and practicing Java step by step. The goal is to build a strong foundation in core Java concepts, Object-Oriented Programming (OOP), and String operations through practical examples and exercises.

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📚 Topics Covered

🔹 Basics of Java (coming soon / as added)

• Syntax & Structure
• Variables, Data Types, Operators
• Control Statements (if-else, loops, switch)

🔹 Java Strings

• String creation and manipulation
• String methods & functions
• StringBuilder & StringBuffer
• Practice problems on string handling

🔹 OOP Concepts

• Classes & Objects
• Constructors
• Inheritance
• Polymorphism
• Encapsulation
• Abstraction

🔹 String Operations & Performance

• String concatenation and performance
• Comparing String, StringBuilder, and StringBuffer
• Hands-on practice problems

🔹 Java Constructors & Keywords

Constructors in Java

*Special methods used to initialize objects. *Name must be the same as the class name. *No return type (not even void). *Invoked automatically when an object is created using new

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🛠️ How to Run

Make sure you have Java (JDK) installed.

# Compile
javac filename.java  

# Run
java filename

Example:

javac HelloWorld.java  
java HelloWorld

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📂 Repository Structure

JAVA-STEP-COURSE/
│── Java Strings/
│   ├── Practice_Problems/
│   ├── Assignment_Problems/
│   └── S1_Lab_Problems/
│
│── OOP-Concept/
│   ├── Practice_Problems/
│   ├── Assignment_Problems/
│   └── S2_Lab_Problems/
│
│── String_operation&Performance/
│   ├── Practice_Problems/
│   └── Assignment_Problems/
|   └── S3_Lab_Problems/
│
└── Java Constructors and Keywords/
│   ├── Practice_Problems/
│   └── Assignment_Problems/
|   └── S4_Lab_Problems/
|
└── Encapsulation/
│   ├── Practice_Problems/
│   └── Assignment_Problems/
|   └── S5_Lab_Problems/
|
└── Inheritance/
│   ├── Practice_Problems/
│   └── Assignment_Problems/
|   └── S6_Lab_Problems/
|
└── Polymorphism/
│   ├── Practice_Problems/
│   └── Assignment_Problems/
|   └── S7_Lab_Problems/
|
└── Abstract Class And Interface/
│   ├── Practice_Problems/
│   └── Assignment_Problems/
|   └── S8_Lab_Problems/
|
└── Object Class Methods, Inner Classes Concept Introduction/
│   ├── Practice_Problems/
│   └── Assignment_Problems/
|   └── S9_Lab_Problems/
|
└── UML Diagram/
│   ├── Practice_Problems/
│   └── Assignment_Problems/
|   └── S10_Lab_Problems/
|
└── Linear DS/
│   ├── Practice_Problems/
│   └── Assignment_Problems/
|   └── S11 & S12_Lab_Problems/
|
└── Linked List Implementation & Operations/
│   ├── Practice_Problems/
│   └── Assignment_Problems/
|   └── S13_Lab_Problems/
   

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🎯 Goal

• Learn Java step by step with practical code examples.
• Strengthen Object-Oriented Programming concepts.
• Understand string handling and performance in Java.
• Build a reference repository for future Java projects.

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👨‍💻 Author

• Rangesh Pandian PT
• Student @ SRM Institute of Science and Technology
• Passionate about Java, Data Structures, and Problem-Solving

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