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# 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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