https://github.com/anirudh1103/complete-java-dsa-oops-springboot
This repository contains 📌 programs, 📝 notes, and 💡 practice problems on Java, OOPs, DSA, Hibernate, Spring, and Spring Boot, along with 🏆 LeetCode solutions and 🧩 coding challenges of varying difficulty levels. Contributions and feedback are always welcome! 🚀
https://github.com/anirudh1103/complete-java-dsa-oops-springboot
advancedjava corejava dsa hibernate hibernate-orm oops-in-java spring spring-boot spring-mvc
Last synced: 9 months ago
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This repository contains 📌 programs, 📝 notes, and 💡 practice problems on Java, OOPs, DSA, Hibernate, Spring, and Spring Boot, along with 🏆 LeetCode solutions and 🧩 coding challenges of varying difficulty levels. Contributions and feedback are always welcome! 🚀
- Host: GitHub
- URL: https://github.com/anirudh1103/complete-java-dsa-oops-springboot
- Owner: Anirudh1103
- Created: 2025-02-26T07:12:55.000Z (10 months ago)
- Default Branch: main
- Last Pushed: 2025-03-16T16:03:32.000Z (9 months ago)
- Last Synced: 2025-03-16T16:36:08.096Z (9 months ago)
- Topics: advancedjava, corejava, dsa, hibernate, hibernate-orm, oops-in-java, spring, spring-boot, spring-mvc
- Language: Java
- Homepage: https://cmanirudh.netlify.app
- Size: 55.3 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Java, Data Structures & Algorithms (DSA), Spring, Spring Boot, and Hibernate 2025
Welcome to the **Java, DSA, Spring, Spring Boot, and Hibernate 2025** repository! This repository contains a collection of **Java code from Beginner to Advanced levels**, along with **explanations of various Data Structures and Algorithms (DSA) concepts, Spring framework, Spring Boot development, Hibernate ORM, and Maven**.
The aim of this repository is to provide a **comprehensive understanding** of **Java programming, common DSA problems, Spring framework, Spring Boot development, Hibernate ORM, and Maven**, along with solutions and their explanations. Whether you're a beginner or preparing for interviews, you'll find **code examples, explanations, and problem-solving strategies** for various topics.
---
## 📚 Topics Covered
### Java Basics
- Introduction to Java
- Variables, Data Types, Operators
- Conditionals, Loops & Switch Statements
- Functions & Methods (Method Overloading, Recursion)
### Arrays and ArrayLists
- Introduction to Arrays & ArrayLists
- Declaring and Initializing Arrays and ArrayLists
### Search Algorithms
- Linear Search
- Binary Search
- Binary Search on 2D Arrays
### Sorting Algorithms
- Bubble Sort
- Selection Sort
- Insertion Sort
- Cycle Sort
### Other Algorithms
- Kadane’s Algorithm (Maximum subarray)
- Boyer-Moore Algorithm (Majority element in an array)
### Strings and StringBuilder
- Manipulating Strings
- String Methods
- StringBuilder class and its operations
### Recursion
- Understanding Recursion and Recursion Trees
- Recursion Examples
### Time and Space Complexity
- Big-O Notation
- Time Complexity Analysis
- Space Complexity Analysis
### Bitwise Operators and Number Systems
- Bitwise Operations (AND, OR, XOR, NOT)
- Number Systems (Decimal, Binary, Hexadecimal, Octal)
### Maths for DSA
- Prime Numbers, Sieve of Eratosthenes
- GCD, LCM, Modular Arithmetic
### Backtracking
- Solving problems using Backtracking
- Examples: N-Queens, Subset Sum, etc.
---
## 💻 Object-Oriented Programming (OOP)
- Classes, Objects, Constructors, and Keywords
- Instance vs. Static variables and methods
- Principles of OOP
- Inheritance, Polymorphism, Encapsulation, Abstraction
- Additional OOP Concepts
- Packages, Exception Handling, Lambda Expressions
- Object Cloning, Generics, Collections Framework
---
## 📦 Data Structures
### Stacks
- Stack Implementation using Arrays & Linked Lists
### Queues
- Circular Queue, Priority Queue
### Linked Lists
- Singly Linked List
- Doubly Linked List
- Circular Singly Linked List
- Circular Doubly Linked List
### Hash Tables
- Hash Functions & Collision Resolution Techniques
### Trees
- Binary Trees, Traversals (Inorder, Preorder, Postorder)
- AVL Trees, Segment Trees
### Heap
- Min-Heap, Max-Heap, Heap Sort
---
## 📂 Advanced Topics
### Maven
- Maven Project Setup
- Dependency Management
- Maven Lifecycle and Plugins
### Spring Framework
- Introduction to Spring
- Spring Core, Spring MVC
- Dependency Injection, Bean Management
- Spring AOP and Transactions
### Spring Boot
- Introduction to Spring Boot
- Creating REST APIs with Spring Boot
- Spring Boot Annotations
- Spring Boot with PostgreSQL
### Hibernate
- CRUD Operations using Hibernate
- Mapping Relationships (OneToOne, OneToMany, ManyToOne, ManyToMany)
- Hibernate Caching
- Introduction to HQL
- Get vs Load
### StringBuffer
- Difference between String and StringBuffer
- Performance Considerations
### File Handling
- Reading and Writing Files in Java
- FileInputStream, FileOutputStream, BufferedReader, BufferedWriter
---
## 📑 Upcoming: DSA Interview Problems
This repository will soon include:
- DSA Interview Questions & Solutions
- Problem-Solving Strategies
- Code Walkthroughs
---
## 🚀 How to Use This Repository
### Clone the Repository:
```bash
git clone https://github.com/Anirudh1103/Complete-Java-DSA-OOPs-SpringBoot.git