Java n倍放大字符串中的数字，不改变字符串其他字符

为了测试数据随手写的代码，希望能帮到您！

import java.math.BigDecimal;

public class EnlargeNum {
    final static Double MAGNIFICATION = 10.0;
    final static String ORIGIN = "1  赐 2 福 0.3 与 40 你 202.2";

    public static void main(String[] args) {
        StringBuilder tempNumString = new StringBuilder();
        StringBuilder newString = new StringBuilder();
        for (int i = 0; i < ORIGIN.length(); i++) {
            if (Character.isDigit(ORIGIN.charAt(i)) || ORIGIN.charAt(i) == '.') {
                tempNumString.append(ORIGIN.charAt(i));
            } else {
                if (tempNumString.length() != 0) {
                    overNum(tempNumString, newString);
                }
                newString.append(ORIGIN.charAt(i));
            }
        }
        if (tempNumString.length() != 0) {
            overNum(tempNumString, newString);
        }

        System.out.println(newString);
    }

    private static void overNum(StringBuilder tempNumString, StringBuilder newString) {
        double tempNum;
        tempNum = new BigDecimal(MAGNIFICATION).multiply(new BigDecimal(tempNumString.toString())).doublevalue();
        newString.append(tempNum);
        tempNumString.delete(0, tempNumString.length());
    }
}