Java中的正则表达式“ \ z”构造
子表达式/元字符“\z”与字符串的末尾匹配。
例1
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegexExample {
public static void main( String args[] ) {
String regex = "Nhooo\\z";
String input = "Hi how are you welcome to 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: 1
例2
以下Java程序验证给定的输入文本是否以数字结尾。
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Data {
public static void main( String args[] ) {
String regex = "[0-9]\\z";
String input = "Hi how are you \n this is sample text \n this is third line 554";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(input);
if(m.find()) {
System.out.println("Given input ends with a digit");
} else {
System.out.println("Given input doesn’t end with a digit");
}
}
}输出结果
Given input ends with a digit