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Resolving Character Encoding Errors: A Comprehensive Guide

Character encoding errors are a persistent headache in software development. They manifest as garbled text, question marks in boxes, or other unexpected characters when your program processes text data. Understanding why these errors occur and how to resolve them is crucial for building robust and reliable applications.

This tutorial will dive deep into the world of character encodings, covering the following topics:

*1. What are Character Encodings?*
1.1. The Need for Encodings: Mapping Characters to Bytes
1.2. A Brief History: ASCII, Extended ASCII, and Code Pages
1.3. Unicode: The Universal Character Set
1.4. UTF-8: The Dominant Encoding
1.5. Other Common Encodings: UTF-16, Latin-1 (ISO-8859-1), and more.

*2. Why Character Encoding Errors Occur?*
2.1. Mismatched Encodings: The Most Common Culprit
2.2. Missing Encoding Declarations
2.3. Data Corruption During Transfer or Storage
2.4. Incorrect Software Configuration

*3. Identifying and Diagnosing Character Encoding Issues*
3.1. Recognizing Common Symptoms: Garbled Text, Question Marks, etc.
3.2. Tools for Inspection: Hex Editors, File Analyzers
3.3. Debugging Strategies: Isolating the Source of the Problem

*4. Resolving Character Encoding Errors: Practical Solutions*
4.1. Specifying the Correct Encoding: In Files, HTTP Headers, Databases
4.2. Converting Between Encodings: Using Libraries and Tools
4.3. Handling Input and Output: Reading and Writing Text Data Correctly
4.4. Database Considerations: Choosing the Right Encoding and Collation
4.5. Web Application Best Practices: Handling Encodings in HTML, JavaScript, and Server-Side Code

*5. Code Examples (Python, Java, JavaScript)*
5.1. Python: Reading, Writing, and Converting Encodings
5.2. Java: Handling Encodings with `InputStreamReader`, `OutputStreamWriter`
5.3. JavaScript ...

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