https://github.com/itsjomon/java
Java Programming & Data Structures/Algorithms repository for quick revision, practice, and reference.
https://github.com/itsjomon/java
algorithms data-structures java java-dsa java-programming-language
Last synced: 7 months ago
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Java Programming & Data Structures/Algorithms repository for quick revision, practice, and reference.
- Host: GitHub
- URL: https://github.com/itsjomon/java
- Owner: itsjomon
- License: mit
- Created: 2025-03-08T14:54:16.000Z (10 months ago)
- Default Branch: main
- Last Pushed: 2025-06-04T15:34:47.000Z (7 months ago)
- Last Synced: 2025-06-04T21:44:26.635Z (7 months ago)
- Topics: algorithms, data-structures, java, java-dsa, java-programming-language
- Language: Java
- Homepage: https://www.geeksforgeeks.org/100-days-of-java/
- Size: 183 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Java – Programming & DSA Notes
Welcome to the **Java Programming & Data Structures/Algorithms** repository!
This repo is a complete collection of concepts, code, and problem-solving notes created while learning **Java** as the primary language.
## About Java
Java is a high-level, object-oriented programming language designed to have as few implementation dependencies as possible. It's known for:
- Platform Independence – *Write Once, Run Anywhere (WORA)*
- Strong Object-Oriented Design
- Rich standard libraries and APIs
- Use in web, desktop, mobile, and enterprise applications
## Setting Up Java Locally
### 1. Install Java (JDK)
To compile and run Java programs, install the Java Development Kit (JDK).
- Download:
- [Oracle JDK](https://www.oracle.com/java/)
- [OpenJDK](https://openjdk.org/)
- Verify installation:
```bash
java -version
javac -version
```
### 2. Set JAVA_HOME Environment Variable (Optional)
**Windows:**
- Set `JAVA_HOME` and update `PATH` to include `JAVA_HOME/bin`
**macOS/Linux:**
```bash
export JAVA_HOME=/path/to/jdk
export PATH=$JAVA_HOME/bin:$PATH
```
## Creating and Running Java Programs
### Option 1: From Command Line
```bash
cd /path/to/your/file
javac Main.java # Compiles the Java file
java Main # Runs the compiled class
```
### Option 2: Using an IDE
Supported IDEs:
- IntelliJ IDEA
- Eclipse
- Visual Studio Code (with Java extensions)
**For VS Code:**
1. Install **Java Extension Pack**
2. Press `Ctrl + Shift + P` → "Create Java Project"
3. Choose `No Build Tools`
4. Select folder and name the project
5. Add code to `App.java` or create new files
## Java Boilerplate Code
```java
public class Main {
public static void main(String[] args) {
System.out.println("Hello, Java!");
}
}
```
**Output:**
```
Hello, Java!
```
## Java Language Features
- Object-Oriented Programming (OOP)
- Multithreading Support
- Automatic Garbage Collection
- Security and Exception Handling
- Platform Independence via JVM
- Robust API and Frameworks (Spring, JavaFX, etc.)
## Repository Structure
This repository is organized by topics and DSA practice folders:
```text
java/
│
├── Flowcharts & Pseudocodes/
│
├── Variables & Data Types
│ ├── Area.java # Calculate area of a circle using user input
│ └── Sum.java # Sum of a & b
│
├── Operators/
│ └── LogicalOperator.java # Logical AND, OR, NOT examples
└── ...
```
> Each topic is organized into its own subfolder (e.g., Operators/, Loops/, Arrays/) containing .java files that cover the concept in depth.
> Each .java file is named to reflect the specific concept or example it implements (e.g., Area.java, LogicalOperator.java), making it easy to navigate and understand.
## Notes
This repository is built progressively as a learning companion through a structured course on **Java Programming and DSA**. It includes:
- Code samples
- Study notes
- DSA problems & solutions
- DSA Practice Sessions, etc
## Repository Overview
> Continue adding entries as new topics are added to the repository.
| Topics Covered |
|---------------------------------------------------|
| [Flowcharts & Pseudocodes](./Flowcharts%20%26%20Pseudocodes) |
| [Variables & Data Types](./Variables%20%26%20Data%20Types) |
| [Operators](./Operators) |
## License
This repository is licensed under the [MIT License](./LICENSE).
## ⭐ Support
If you find this helpful, give it a ⭐ on GitHub and feel free to fork it for your own learning journey!