通过 Scanner 类对该字符串进行分析

Question

已知有字符串“面包8元,牛奶4元,水果15元”,通过 Scanner 类对该字符串进行分析,输出话费的总金额

Answer 1

package pc;

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

public class Main {

    public static void main(String[] args) throws Exception {
        String content = "面包8元,牛奶4元,水果15元";
        Pattern pattern = Pattern.compile("\\d+");
        Matcher matcher = pattern.matcher(content);
        int totalCost=0;
        while(matcher.find()) {
            String result= matcher.group();
            totalCost+=Integer.valueOf(result);
        }
        System.out.println(String.format("总花费为:%d元。", totalCost));

    }

}