Posix文字クラス\p{IsLatin}Java正規表現

このクラス\p{IsLatin}はラテン語の文字と一致します。

例1

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();
      //Regular expression
      String regex = "\\p{IsLatin}";
      //Compiling the regular expression
      Pattern pattern = Pattern.compile(regex);
      //Retrieving the matcher object
      Matcher matcher = pattern.matcher(input);
      int count = 0;
      while(matcher.find()) {
         count++;
      }
      System.out.println("Number of Latin characters: "+count);
   }
}

出力

Enter a string
cé dé há ó
Number of Latin characters: 7

例2

import java.util.Scanner;
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();
      //Regular expression
      String regex = "^.*\\p{IsLatin}.*";
      boolean result = input.matches(regex);
      if(result) {
         System.out.println("Given string contains Latin characters");
      } else {
         System.out.println("Given string does not contain Latin characters ");
      }
   }
}

出力

Enter a string
sample text y e
Given string contains Latin characters