还有一个特殊的组(group(0)),它总是代表整个表达式。该组不包括在 groupCount 的返回值中。 实例下面的例子说明如何从一个给定的字符串中找到数字串:RegexMatches.java 文件代码: import java.util.regex.Matcher; import java.util.regex.Pattern; public class Regex
String regEx = "[\\u4e00-\\u9fa5]"; String str = "中文fdas "; Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(str); while (m.find()) { count = count + 1; System.out.println(m.groupCount()); System.out.println(m.group()); } System.out.println("共有 " + coun...
class RegexExample1{ public static void main(String args[]){ String content = "I am noob " + "from china.com.";String pattern = ".*china.*";boolean isMatch = Pattern.matches(pattern, content);System.out.println("字符串中是否包含了 'runoob' 子字符串? " + isMatch);} } Java正则...
System.out.println(replaceOfMatchGroup(content, regex,1, word -> word.toUpperCase())); System.out.println(replaceOfMatchGroup(content, regex,1, word -> word +"good")); }publicstaticStringreplaceOfMatchGroup(String sourceString, String pattern,intgroupToReplace, Function<String, String> replace...
在Sun的Java JDK 1.40版本中,Java自带了支持正则表达式的包,本文就抛砖引玉地介绍了如何使用java.util.regex包。 可粗略估计一下,除了偶尔用Linux的外,其他Linu x用户都会遇到正则表达式。正则表达式是个极端强大工具,而且在字符串模式-匹配和字符串模式-替换方面富有弹性。在Unix世界里,正则表达式几乎没有什么限制,...
bash 目前大部分shell(如bash)都提供了正则表达式判断操作符=~,如下就可以对一个字符符判断是否匹配正则表达式: $ [[ "hello world" =~ wor(ld)?...]] && echo match matched 其实基于上面的表达式不仅可以判断是否匹配正则表达,还可以通过上面表达式创建的变量 BASH_REGEX(数组)提取捕获组(catch group),......
String regex = "^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$"; String email = "test@example.com"; boolean isMatch = Pattern.matches(regex, email); 匹配身份证号码 String regex = "^\d{17}[0-9Xx]$"; String idCardNum = "420821199001011234"; boolean isMatch =...
matcher(text);if(matcherGreedy.find()){System.out.println("Greedy Match: "+matcherGreedy.group(...
import java.util.regex.Matcher;public class Main { public static void main(String[] args) { // Prepare regular expression. A group of 3 digits followed by 7 digits.String regex = "\\b(\\d{3})\\d{7}\\b";String source = "1111111111, 1111111, and 1111111111";// Compile the regular...
System.out.println("Found value: " + m.group(0) ); System.out.println("Found value: " + m.group(1) ); System.out.println("Found value: " + m.group(2) ); } else { System.out.println("NO MATCH"); } } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15...