Question

java中假如我写了一个正则表达式^ \\d\\w$,那么如何返回匹配上这个表达式的字符串结果

Answer 1

package com.marslei.utils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Utils {

public String get(String raw) {
Pattern pattern=Pattern.compile("^\\d\\w$");
Matcher matcher=pattern.matcher(raw);
if (matcher.find()) {
return matcher.group();
}
else {
return "";
}
}
public static void main(String[] args) {
Utils utils=new Utils();
String value=utils.get("1a");
System.out.println(value);
}
}