字符类[a-z && [def]]匹配d,e或f。
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-z&&[def]]"; private static final String INPUT = "dbcabca124ADCmnbc"; 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
参考链接
https://www.learnfk.com/javaregex/javaregex-character-class-intersection.html
标签:匹配,String,matcher,无涯,start,static,&&,Pattern,Java From: https://blog.51cto.com/u_14033984/9055418