java校验字符串只包含数字

java 实现校验字符串只包含数字

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

/**
 * @author yuhuofei
 * @version 1.0
 * @description
 * @date 2022/12/1 11:13
 */
public class NumberUtil {

    /**
     * 校验一个字符串是否只包含纯数字
     */
    public static boolean isDigits(String data) {
        String regex = "[0-9]+";
        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(data);
        return matcher.matches();
    }

    public static void main(String[] args) {
        String data = "223333444400987654321";
        String other = "8w2g9d30^&*%opl2e34";
        System.out.println("是否只包含纯数字：" + isDigits(data));
        System.out.println("是否只包含纯数字：" + isDigits(other));
    }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29