Posix 字符类 p{Sc} Java 正则表达式
javaobject oriented programmingprogramming
此类匹配货币符号。
示例 1
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example1 {
public static void main(String args[]) {
//从用户读取字符串
System.out.println("输入字符串");
Scanner sc = new Scanner(System.in);
String input = sc.nextLine();
//正则表达式
String regex = "\p{Sc}";
//编译正则表达式
Pattern pattern = Pattern.compile(regex);
//检索匹配器对象
Matcher matcher = pattern.matcher(input);
int count = 0;
while(matcher.find()) {
count++;
}
System.out.println("Number of alphabetic characters: "+count);
}
}
输出
输入字符串 euro €, pounds £, dollar $, yen ¥ Number of alphabetic characters: 4
示例 2
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example2 {
public static void main(String args[]) {
//匹配小写字母的正则表达式
String regex = "^.*\p{Sc}.*$";
//获取输入数据
Scanner sc = new Scanner(System.in);
System.out.println("请输入5个字符串: ");
String input[] = new String[5];
for (int i=0; i<5; i++) {
input[i] = sc.nextLine();
}
//创建一个 Pattern 对象
Pattern p = Pattern.compile(regex);
System.out.println("Strings with alphabetic characters: ");
for(int i=0; i<5;i++) {
//创建一个 Matcher 对象
Matcher m = p.matcher(input[i]);
if(m.matches()) {
System.out.println(m.group());
}
}
}
}
输出
请输入5个字符串: hello sample 243test # #$$@ £shelling Strings with alphabetic characters: # #$$@ £shelling
