POSIX 字符类 p{IsLatin} Java 正则表达式
此类 \p{IsLatin} 匹配拉丁字符。
示例 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);
}
}输出
Enter a string cé dé há ó Number of Latin characters: 7
示例 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 ");
}
}
}输出
Enter a string sample text y e Given string contains Latin characters
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