java数字转换成文字方法

public class IntToSmallChineseNumber {

    public static String ToCH(int intInput) {
        String si = String.valueOf(intInput);
        String sd = "";
        if (si.length() == 1) // 個
        {
            sd += GetCH(intInput);
            return sd;
        } else if (si.length() == 2)// 十
        {
            if (si.substring(0, 1).equals("1"))
                sd += "十";
            else
                sd += (GetCH(intInput / 10) + "十");
            sd += ToCH(intInput % 10);
        } else if (si.length() == 3)// 百
        {
            sd += (GetCH(intInput / 100) + "百");
            if (String.valueOf(intInput % 100).length() < 2)
                sd += "零";
            sd += ToCH(intInput % 100);
        } else if (si.length() == 4)// 千
        {
            sd += (GetCH(intInput / 1000) + "千");
            if (String.valueOf(intInput % 1000).length() < 3)
                sd += "零";
            sd += ToCH(intInput % 1000);
        } else if (si.length() == 5)// 萬
        {
            sd += (GetCH(intInput / 10000) + "萬");
            if (String.valueOf(intInput % 10000).length() < 4)
                sd += "零";
            sd += ToCH(intInput % 10000);
        }

        return sd;
    }

    private static String GetCH(int input) {
        String sd = "";
        switch (input) {
        case 1:
            sd = "一";
            break;
        case 2:
            sd = "二";
            break;
        case 3:
            sd = "三";
            break;
        case 4:
            sd = "四";
            break;
        case 5:
            sd = "五";
            break;
        case 6:
            sd = "六";
            break;
        case 7:
            sd = "七";
            break;
        case 8:
            sd = "八";
            break;
        case 9:
            sd = "九";
            break;
        default:
            break;
        }
        return sd;
    }
}