Java java.util.regex.Matcher.requireEnd()用法及代碼示例

描述

這個java.util.regex.Matcher.requireEnd()如果更多輸入可以將正匹配更改為負匹配，則方法返回 true。

聲明

以下是聲明java.util.regex.Matcher.requireEnd()方法。

public boolean requireEnd()

返回值

當且僅當更多輸入可以將正匹配變為負匹配時為真。

示例

下麵的例子展示了 java.util.regex.Matcher.requireEnd() 方法的用法。

package com.tutorialspoint;

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

public class MatcherDemo {
   private static String REGEX = "(a*b)(foo)";
   private static String INPUT = "aabfooaabfooabfoob";
   private static String REPLACE = "-";
   
   public static void main(String[] args) {
      Pattern pattern = Pattern.compile(REGEX);
      
      // get a matcher object
      Matcher matcher = pattern.matcher(INPUT);
      
      while(matcher.find()) {
         //Prints the offset after the last character matched.
         System.out.println("First Capturing Group, (a*b) Match String end():"+matcher.end());   
         System.out.println("requireEnd():"+matcher.requireEnd());    
      }     
   }
}

讓我們編譯並運行上麵的程序，這將產生以下結果——

First Capturing Group, (a*b) Match String end():6
requireEnd():false
First Capturing Group, (a*b) Match String end():12
requireEnd():false
First Capturing Group, (a*b) Match String end():17
requireEnd():false