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My-Java

★ 5 Open GitHub ↗

My solutions for HackerRank Java challenges and practice code.

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# My-Java

A collection of Java practice programs covering core language concepts, data structures, and HackerRank-style problem solutions.

## 📁 Repository Structure

```
My-Java/
└── My-Java-HackerRank/   # Java practice & HackerRank solutions
```

## 📚 Topics Covered

| Topic | Files |
|---|---|
| **Arrays** | `p1_array.java` – `p7_array.java` |
| **ArrayList** | `p1_arraylist.java`, `p2_arraylist.java`, `p3_arraylist.java` |
| **Matrix** | `p1_matrix.java`, `p2_matrix.java` |
| **Threads & Multithreading** | `p1_threads.java`, `p1_multi_thread_Q.java`, `p2_thread_runnable.java`, `p3_thread.java`, `p3_mutli_threading_methods.java` |
| **Exception Handling** | `p1_try_and_catch.java`, `p2_try_and_catch.java`, `p1_exception_methods.java`, `p1_CustomException.java`, `p2_CustomException.java`, `p3_CustomException.java` |
| **Varargs** | `p1_varargs.java`, `p2_varargs.java` |
| **Collections** | `p1_hashset.java`, `p1_javastack.java` |
| **String Operations** | `p1_stringcoversion.java`, `string_method_learn.java` |
| **Formatting & I/O** | `formating.java`, `p1_br.java` |
| **Data Types** | `hackerrank_datatypeQ.java` |
| **Miscellaneous** | `checking.java`, `solve.java`, `Main.java` |

## 🛠️ Getting Started

### Prerequisites
- Java 8 or higher
- Any Java IDE (IntelliJ IDEA, Eclipse, VS Code) or the JDK command-line tools

### Running a Program
```bash
# Compile
javac My-Java-HackerRank/<FileName>.java

# Run
java -cp My-Java-HackerRank <ClassName>
```

## 🔗 Author

**Aayushman** — [GitHub](https://github.com/aayushmanz)

My-Java

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