Java中的正则表达式“ \ S”元字符
子表达式/元字符“\S”与非空格字符匹配。
例子1
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegexExample {
public static void main( String args[] ) {
String regex = "\\S";
String input = "您好，欢迎来到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: 38
例子2
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main( String args[] ) {
String regex = "\\S";
Scanner sc = new Scanner(System.in);
System.out.println("Enter 5 input strings: ");
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("Number of characters in each string w/o spaces: ");
for(int i=0; i<5;i++) {
//创建一个Matcher对象
Matcher m = p.matcher(input[i]);
int count = 0;
while(m.find()) {
count++;
}
System.out.println("String "+i+": "+count);
}
}
}输出结果
Enter 5 input strings: sample123 test data test *123 ab bc cd de hello how are you welcome to Nhooo Number of characters in each string w/o spaces: String 0: 9 String 1: 8 String 2: 8 String 3: 8 String 4: 37