Table of Contents 1. Introduction to Regular Expressions What are regular expressions? Why use regular expressions in Java? 2. Basic Regex Syntax in Java Characters and character classes Anchors and boundaries Quantifiers and alternation Grouping and capturing 3. Pattern and Matcher Classes in Java Using Pattern.compile() to create a regular expression pattern Using Matcher.matches() to test a regex against an entire string Using Matcher.find() and Matcher.group() to find and extract matches in a string 4. Common Regex Use Cases in Java Validating date formats Extracting email addresses Splitting strings into words Replacing text within a string Matching URLs and email addresses 5. Best Practices for Using Regular Expressions in Java Avoiding common regex pitfalls Optimizing the performance of regex patterns Writing maintainable and readable regex code 6. Conclusion and Further Resources Recap of key concepts and techniques Links to additional learning resources and tools. 1. Introdu