子表达式/元字符“ \ z”与字符串的末尾匹配。
import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main( String args[] ) { String regex = "Nhooo\\z"; String input = "Hi how are you welcome to Nhooo"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); } }
输出结果
Number of matches: 1
以下Java程序验证给定的输入文本是否以数字结尾。
import java.util.regex.Matcher; import java.util.regex.Pattern; public class Data { public static void main( String args[] ) { String regex = "[0-9]\\z"; String input = "Hi how are you \n this is sample text \n this is third line 554"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); if(m.find()) { System.out.println("Given input ends with a digit"); } else { System.out.println("Given input doesn’t end with a digit"); } } }
输出结果
Given input ends with a digit