How to use predefined character class digit and non-digit? | Java Regex | Regex in java

In this Java programming tutorial, learn how to harness the power of predefined character classes `\d` (digit) and `\D` (non-digit) in regular expressions (Regex). These classes enable precise pattern matching for numeric and non-numeric characters, essential for validating and extracting specific data formats in Java applications.

**Key Points Covered:**
- Introduction to regular expressions (Regex) and the importance of predefined character classes.
- Explanation of `\d` (digit) and `\D` (non-digit) predefined character classes:
- `\d`: Matches any digit (0-9).
- `\D`: Matches any character that is not a digit.
- Step-by-step guide on using `\d` and `\D` in Java Regex:
- Constructing Regex patterns with `\d` and `\D` for numeric and non-numeric matches.
- Examples demonstrating how to validate and extract numeric data such as phone numbers, postal codes, and more.
- Handling edge cases and considerations when using `\d` and `\D`.
- Practical demonstrations and code examples illustrating `\d` and `\D` predefined character class usage in Java Regex.
- Benefits and best practices for leveraging `\d` and `\D` in Java applications for efficient data validation and extraction.

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How to use predefined character class digit and non-digit | Java Regex | Java Regular Expressions | Regex in java

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