# Java Exceptions and File Handling Workshop

## Introduction
This workshop is designed to help students become familiar with **exception handling** and **basic file operations in Java**.  
It provides small demo programs and guided exercises that demonstrate how common runtime exceptions occur and how they should be handled in real applications.

The workshop also includes a **file handling guide**, showing how Java can interact with files on the system and how to work with JSON data.


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## Workshop Structure

The workshop consists of two main sections:

### 1. Exception Handling
This section contains demonstration code that intentionally produces different types of runtime exceptions. Students are expected to analyze the code and apply proper **exception handling techniques**.

The examples include scenarios such as:

- `NullPointerException`
- `IllegalArgumentException`
- `ArithmeticException`
- `NumberFormatException`
- `IllegalStateException`

### 2. File Handling Guide
The second section of the workshop introduces common **file system operations in Java**.  
Unlike the exception section, this part is mainly **instructional** and does not contain required exercises.

Topics covered include:

- **AddressingModes**  
  Understanding relative and absolute file paths.

- **CreatingFiles**  
  How to create files programmatically using Java.

- **DeletingFiles**  
  Removing files from the file system safely.

- **ReadingFiles**  
  Reading data from text files using Java IO classes.

- **WritingFiles**  
  Writing content to files.

- **ParsingJson**  
  Basic techniques for working with JSON files in Java.

These examples are intended to serve as **reference material** for future projects.

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## Tasks

Students may optionally complete the following tasks:

1. Review the provided exception demo code.
2. Identify where runtime exceptions occur.
3. Modify the `FileService` methods by:
    - Uncommenting the provided code
    - Adding appropriate exception handling
4. Test the program to ensure that errors are handled gracefully.

### Important Notice
Completing and submitting this workshop is **NOT mandatory** and **does not carry any points or grading**.

It is provided purely as a **learning exercise** to help students better understand Java exception handling and file operations.

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## Learning Goals

By working through this workshop, students should be able to:

- Understand common Java runtime exceptions
- Apply `try-catch` blocks correctly
- Handle file-related exceptions
- Perform basic file operations in Java
- Understand how Java programs interact with JSON files
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