字符类\s 匹配从a到z或A到Z或0到9的任何单词字符。
w - 示例
以下示例显示了预定义字符类匹配的用法。
package com.learnfk; import java.util.regex.Matcher; import java.util.regex.Pattern; public class PredefinedCharacterClassDemo { private static final String REGEX = "\\w"; private static final String INPUT = "dbcaABb12\tc"; 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(): 7 Match String start(): 8 Match String start(): 10
参考链接
https://www.learnfk.com/javaregex/javaregex-predefined-class-word.html
标签:Java,String,matcher,无涯,start,正则,Pattern,匹配,Match From: https://blog.51cto.com/u_14033984/9057682