Java Regex Tutorial
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- Java Regex - Discussion
- Java Regex - Useful Resources
- Java Regex - Quick Guide
- Java Regex - Logical Operators
- Java Regex - Possessive quantifiers
- Java Regex - Reluctant quantifiers
- Java Regex - Greedy quantifiers
- Java Regex - Boundary Matchers
- Unicode Character Classes
- Java Regex - JAVA Character Classes
- POSIX Character Classes
- Predefined Character Classes
- Java Regex - Character Classes
- Java Regex - Characters
- PatternSyntaxException Class
- Java Regex - Matcher Class
- Java Regex - Pattern Class
- Java Regex - MatchResult Interface
- Java Regex - Capturing Groups
- Java Regex - Overview
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POSIX Character Classes
Matching POSIX Character Classes
Following are various examples of matching POSIX character classes using regular expression in java.
| Sr.No | Construct & Matches |
|---|---|
| 1 |
A lower-case alphabetic character: [a-z]. |
| 2 |
An upper-case alphabetic character:[A-Z]. |
| 3 |
All ASCII:[x00-x7F]. |
| 4 |
An alphabetic character:[p{Lower}p{Upper}]. |
| 5 |
A decimal digit: [0-9]. |
| 6 |
An alphanumeric character:[p{Alpha}p{Digit}]. |
| 7 |
Punctuation: One of !"#$%& ()*+,-./:;<=>?@[]^_>{|}<. |
| 8 |
A visible character: [p{Alnum}p{Punct}]. |
| 9 |
A printable character: [p{Graph}x20]. |
| 10 |
A space or a tab: [ ]. |
| 11 |
A hexadecimal digit: [0-9a-fA-F]. |
| 12 |
A whitespace character: [ x0Bf ]. |