Javaregex 简明教程
Matching POSIX Character Classes
以下是使用正则表达式在 Java 中匹配 POSIX 字符类的各种示例。
Following are various examples of matching POSIX character classes using regular expression in java.
Sr.No |
Construct & Matches |
1 |
\p{Lower}A lower-case alphabetic character: [a-z]. |
2 |
\p{Upper}An upper-case alphabetic character:[A-Z]. |
3 |
\p{ASCII}All ASCII:[\x00-\x7F]. |
4 |
\p{Alpha}An alphabetic character:[\p{Lower}\p{Upper}]. |
5 |
\p{Digit}A decimal digit: [0-9]. |
6 |
\p{Alnum}An alphanumeric character:[\p{Alpha}\p{Digit}]. |
7 |
\p{Punct}Punctuation: One of !"#$%&'()*+,-./:;<⇒?@[\]^_>{ |
}<. |
8 |
\p{Graph}A visible character: [\p{Alnum}\p{Punct}]. |
9 |
\p{Print}A printable character: [\p{Graph}\x20]. |
10 |
\pA space or a tab: [ \t]. |
11 |
\p{XDigit}A hexadecimal digit: [0-9a-fA-F]. |
12 |