java.time.MatchResult.start()方法返回匹配的开始索引。
int start()
匹配的第一个字符的索引。
IllegalStateException -如果尚未尝试匹配,或者先前的匹配操作失败。
下面的示例显示java.time.MatchResult.start()方法的用法。
链接:https://www.learnfk.comhttps://www.learnfk.com/javaregex/javaregex-matchresult-start.html
来源:LearnFk无涯教程网
package com.learnfk; import java.util.regex.MatchResult; import java.util.regex.Matcher; import java.util.regex.Pattern; public class MatchResultDemo { private static final String REGEX = "(.*)(\\d+)(.*)"; private static final String INPUT = "This is a sample Text, 1234, with numbers in between."; 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()) { //get the MatchResultObject MatchResult result = matcher.toMatchResult(); //Prints the start index of the match. System.out.println("First Capturing Group - Match String start(): "+result.start()); } } }
让无涯教程编译并运行以上程序,这将产生以下输出-
First Capturing Group - Match String start(): 0
祝学习愉快!(内容编辑有误?请选中要编辑内容 -> 右键 -> 修改 -> 提交!)
Spring Cloud 微服务项目实战 -〔姚秋辰(姚半仙)〕