java中的字符串解析 [英] string parsing in java

问题描述

在Java中执行以下操作的最佳方法是什么？
我有两个输入字符串

What is the best way to do the following in Java. I have two input strings

this is a good example with 234 songs
this is %%type%% example with %%number%% songs

我需要从字符串中提取类型和数字。

I need to extract type and number from the string.

这种情况下的答案是type =a good和number =234

Answer in this case is type="a good" and number="234"

谢谢

推荐答案

你可以用正则表达式做到这一点：

You can do it with regular expressions:

import java.util.regex.*;

class A {
        public static void main(String[] args) {
                String s = "this is a good example with 234 songs";


                Pattern p = Pattern.compile("this is a (.*?) example with (\\d+) songs");
                Matcher m = p.matcher(s);
                if (m.matches()) {
                        String kind = m.group(1);
                        String nbr = m.group(2);

                        System.out.println("kind: " + kind + " nbr: " + nbr);
                }
        }
}

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