无涯教程-Java 正则 - characters \xhh 匹配函数

字符\0xhh 与具有十六进制值0xhh的字符匹配。

以下示例显示了字符匹配的用法。

package com.learnfk;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class CharactersDemo {
   private static final String REGEX = "\\x41";
   private static final String INPUT = "abcAabc";

   public static void main(String[] args) {
      //create a pattern
      Pattern pattern = Pattern.compile(REGEX);
      
      //get a matcher object
      Matcher matcher = pattern.matcher(INPUT); 

      if(matcher.find()) {
         //Prints the start index of the match.
         System.out.println("Match String start(): "+matcher.start());
      }
   }
}

让我们编译并运行以上程序，这将产生以下输出-

Match String start(): 3

参考链接

https://www.learnfk.com/javaregex/javaregex-characters-hexa-xhh.html