元转分，分转元

来源：互联网发布：光盘刻录哪个软件好编辑：程序博客网时间：2024/04/28 13:22
元和分的转换

/** * Created by lks on 2017-02-28. */public class NumberUtils {    //判断是否为整数    public static boolean isInteger(String value)    {        try {            Integer.parseInt(value);            return true;        } catch (NumberFormatException e) {            return false;        }    }    //判断是否为浮点型    public static boolean isDouble(String value)    {        try {            Double.parseDouble(value);            return  true;        } catch (NumberFormatException e) {            return false;        }    }    //判断是否为数字    public static boolean isNumber(String value)    {        return isInteger(value)||isDouble(value);    }    //元转分    public static String fromYuanToFen(String yuan)    {        if(NumberUtils.isNumber(yuan)){            BigDecimal fen = new BigDecimal(yuan);            BigDecimal mul = new BigDecimal(100);            BigDecimal multiply = fen.multiply(mul);            //对数据从小数点的第0位开始向上取整            multiply = multiply.setScale(0,BigDecimal.ROUND_HALF_UP);            return multiply.toString();        }else{            throw new NumberFormatException("该数据不是数值类型，类型不匹配");        }    }    //分转元    public static String fromFenToYuan(String fen)    {        if(NumberUtils.isNumber(fen))        {            BigDecimal yuan = new BigDecimal(fen);            BigDecimal div = new BigDecimal(100);            return yuan.divide(div,2,BigDecimal.ROUND_HALF_UP).toString();        }else{            throw new NumberFormatException("该数据不是数值类型，类型不匹配");        }    }    public static void main(String[] args) {        String value ="111111";        System.out.println(fromFenToYuan(value));        String value2 ="111.1161";        System.out.println(fromYuanToFen(value2));    }}
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