如何使用 Java 正則表示式匹配輸入結尾?
可以使用元字元“\z”匹配輸入的結尾。
示例
import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String args[]) { //Reading String from user System.out.println("Enter a String"); Scanner sc = new Scanner(System.in); String input = sc.nextLine(); String regex = "[0-9]\z"; //Compiling the regular expression Pattern pattern = Pattern.compile(regex); //Retrieving the matcher object Matcher matcher = pattern.matcher(input); int count = 0; if(matcher.find()) { System.out.println("Match found "); } else { System.out.println("Match not found "); } } }
輸出 1
Enter a String sample text Match not found
輸出 2
Enter a String sample text 23 Match found
廣告