字符类 [a-zA-Z] 匹配从a到z或A到Z的任何字符。
[a-zA-Z] - 示例
以下示例显示了字符类匹配的用法。
package com.learnfk; import java.util.regex.Matcher; import java.util.regex.Pattern; public class CharacterClassDemo { private static final String REGEX = "[a-zA-Z]"; private static final String INPUT = "dbcabca124ADCbc"; public static void main(String[] args) { //创建一个模式 Pattern pattern = Pattern.compile(REGEX); //获取匹配器对象 Matcher matcher = pattern.matcher(INPUT); while(matcher.find()) { //打印匹配的开始索引。 System.out.println("Match String start(): "+matcher.start()); } } }
让无涯教程编译并运行以上程序,这将产生以下输出-
Match String start(): 0 Match String start(): 1 Match String start(): 2 Match String start(): 3 Match String start(): 4 Match String start(): 5 Match String start(): 6 Match String start(): 10 Match String start(): 11 Match String start(): 12 Match String start(): 13 Match String start(): 14
参考链接
https://www.learnfk.com/javaregex/javaregex-character-class-range.html
标签:Java,String,matcher,无涯,zA,start,匹配,Match From: https://blog.51cto.com/u_14033984/9051037