importjava.util.regex.Matcher;importjava.util.regex.Pattern;publicclassNonGreedyMatching{publicstaticvoidmain(String[] args){Stringinput="The price of the item is $12.34.";Stringregex="\\$(\\d+\\.\\d{2})";Patternpattern=Pattern.compile(regex);Matchermatcher=pattern.matcher(input);if(matcher...
Stringtext="<tag>content</tag>";// 贪婪PatternpatternGreedy=Pattern.compile("<.*>");// 非贪...
importjava.util.regex.Matcher;importjava.util.regex.Pattern;publicclassRegexDemo{publicstaticvoidmain(String[]args){Stringinput="abbbc";// 贪婪模式PatterngreedyPattern=Pattern.compile("ab+c");MatchergreedyMatcher=greedyPattern.matcher(input);if(greedyMatcher.find()){System.out.println("Greedy match: ...
import java.util.regex.*; public class NonGreedyMatchExample { public static void main(String[] args) { String text = "<html><body><h1>Hello, World!</h1></body></html>"; String regex = "<.*?>"; Pattern pattern = Pattern.compile...
import java.util.regex.*; public class Main { public static void main(String[] args) { String input = "aabab"; Pattern pattern = Pattern.compile(".*?ab"); Matcher matcher = pattern.matcher(input); if (matcher.find()) { System.out.println("Non-greedy match: " + matcher.group())...
NonGreedyExample+String text+findGreedyMatch()+findNonGreedyMatch() NonGreedyMatcherGreedyMatcherClientNonGreedyMatcherGreedyMatcherClientFind match with <.*>Return result <world>! Welcome to <Java> regex>Find match with <.*?>Return result <world> and <Java> ...
Reluctant(勉强的): 用问号表示,它会匹配最少的字符。也称为lazy, minimal matching, non-greedy, 或ungreedy。 Possessive(占有的): 目前只有Java支持(其它语言都不支持)。它更加先进,所以你可能还不太会用。用正则表达式匹配字符串的时候会产生很多中间状态,(一般的匹配引擎会保存这种中间状态,)这样匹配失败的时...
greedy是贪婪的,reluctant是勉强的,也可理解为non-greedy非贪婪的,possessive是独占的,占有的,这些关键词只在java正则表达式的量词表达时起作用。如{n,m},{n,m}?,{n,m}+分别表示贪婪的,非贪婪的,独占的匹配算法 greedy算法:在整个正则表达式匹配成功的前提下,量词修饰的字符部分会尽可能多的匹配字符串,如果由于...
贪婪模式(Greedy) 在数量匹配中,如果单独使用+、?、*、{min,max}等量词,正则表达式会匹配尽可能多的内容 text="abbc" , regex="ab{1,3}c",发生了一次匹配失败,就会引起一次回溯 text="abbbc" , regex="ab{1,3}c",匹配成功 懒惰模式(Reluctant) 在懒惰模式下,正则表达式会尽可能少地重复匹配字符,如果...
AsMatchPredicate() Creates a predicate that tests if this pattern matches a given input string. AsPredicate() Creates a predicate that tests if this pattern is found in a given input string. Clone() Creates and returns a copy of this object. (Inherited from Object) Compile(String, Reg...