Java：从字符串中删除数值 [英] Java: removing numeric values from string

问题描述

我已经在这个社区的帮助下取代了从用户输入中删除数值，但是，我的代码只会在删除数字之前检索字母字符：

I have suceeded with the help of this community in removing numeric values from user input, however, my code below will only retrieve the alpha characters before the numeric that has been removed:

import java.util.Scanner;

public class Assignment2_A {

    public static void main(String[] args) {
        Scanner firstname = new Scanner(System.in);
        String firstname1 = firstname.next();
        firstname1 = firstname1.replaceAll("[^A-Z]","");
        System.out.println(firstname1);
    }
}

例如，如果用户输入= S1234am，我只是回来：S。如何检索字符串中的剩余字符？

For example if user input = S1234am, I am only getting back: S. How do I retrieve the remaining characters in the string?

推荐答案

您的正则表达式 [^ AZ] 目前仅配置为保留大写字母。您可以尝试用 [^ A-Za-z] 替换它以保留小写字母。

Your regular expression [^A-Z] is currently only configured to preserve upper-case letters. You could try replacing it with [^A-Za-z] to keep the lower-case letters too.

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