org.hiylo.components.commons.utils

Class NumberUtils

java.lang.Object

org.hiylo.components.commons.utils.NumberUtils

public class NumberUtils
extends Object

Author:

hiylo

Constructor Summary

Constructors

Constructor and Description
NumberUtils()

Method Summary

Modifier and Type	Method and Description
static Double	add(Double v1, Double v2) * 两个Double数相加 *
static String	castDoubleKeepTwoDecimalPlaces(double price)
static String	castDoublePriceToString(double price) 将double类型的数值转化为保留两位小数的字符串
static String	clearZero(Double aDouble) 清楚尾部多余的0
static String	decimalFormat(Double v1) 保留小数点两位（未四舍五入）
static Double	div(Double v1, Double v2) * 两个Double数相除 *
static Double	div(Double v1, Double v2, int scale) * 两个Double数相除，并保留scale位小数 *
static boolean	equalsAndGreaterThanZero(int... values)
static boolean	equalsAndLessThan(int src, int... values)
static double	formatDouble(String s)
static String	formatString(double d)
static boolean	greaterThan(double src, double... values)
static boolean	greaterThanZero(double... values)
static boolean	greaterThanZero(int... values)
static boolean	isNan(String... numbers) 判断是否是数字
static boolean	lessThan(double src, double... values)
static boolean	lessThan(int src, int... values)
static boolean	lessThanZero(int... values)
static Double	mul(Double v1, Double v2) * 两个Double数相乘 *
static Double	noRound(Double v1) 保留小数点两位(未四舍五入)
static Double	noRound(Double v1, int digits) 保留小数点两位(未四舍五入)
static Double	round(Double v1) 保留小数点两位(四舍五入)
static Double	round(double v, int scale) 提供精确的小数位四舍五入处理
static String	round(String v, int scale) 提供精确的小数位四舍五入处理
static Double	sub(Double v1, Double v2) * 两个Double数相减 *

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NumberUtils

public NumberUtils()

Method Detail

castDoublePriceToString

public static String castDoublePriceToString(double price)

将double类型的数值转化为保留两位小数的字符串

Parameters:

price - double类型的数值

Returns:

保留两位小数的字符串

castDoubleKeepTwoDecimalPlaces

public static String castDoubleKeepTwoDecimalPlaces(double price)

greaterThanZero

public static boolean greaterThanZero(int... values)

lessThanZero

public static boolean lessThanZero(int... values)

equalsAndGreaterThanZero

public static boolean equalsAndGreaterThanZero(int... values)

greaterThanZero

public static boolean greaterThanZero(double... values)

lessThan

public static boolean lessThan(int src,
                               int... values)

equalsAndLessThan

public static boolean equalsAndLessThan(int src,
                                        int... values)

lessThan

public static boolean lessThan(double src,
                               double... values)

greaterThan

public static boolean greaterThan(double src,
                                  double... values)

add

public static Double add(Double v1,
                         Double v2)

* 两个Double数相加 *

Parameters:

v1 - *

v2 - *

Returns:

Double

sub

public static Double sub(Double v1,
                         Double v2)

* 两个Double数相减 *

Parameters:

v1 - *

v2 - *

Returns:

Double

mul

public static Double mul(Double v1,
                         Double v2)

* 两个Double数相乘 *

Parameters:

v1 - *

v2 - *

Returns:

Double

div

public static Double div(Double v1,
                         Double v2)

* 两个Double数相除 *

Parameters:

v1 - *

v2 - *

Returns:

Double

div

public static Double div(Double v1,
                         Double v2,
                         int scale)

* 两个Double数相除，并保留scale位小数 *

Parameters:

v1 - *

v2 - *

scale - *

Returns:

Double

round

public static Double round(Double v1)

保留小数点两位(四舍五入)

Parameters:

v1 -

Returns:

round

public static Double round(double v,
                           int scale)

提供精确的小数位四舍五入处理

Parameters:

v - 需要四舍五入的数字

scale - 小数点后保留几位

Returns:

四舍五入后的结果

round

public static String round(String v,
                           int scale)

提供精确的小数位四舍五入处理

Parameters:

v - 需要四舍五入的数字

scale - 小数点后保留几位

Returns:

四舍五入后的结果

formatString

public static String formatString(double d)

formatDouble

public static double formatDouble(String s)

noRound

public static Double noRound(Double v1)

保留小数点两位(未四舍五入)

Parameters:

v1 -

Returns:

noRound

public static Double noRound(Double v1,
                             int digits)

保留小数点两位(未四舍五入)

Parameters:

v1 -

Returns:

decimalFormat

public static String decimalFormat(Double v1)

保留小数点两位（未四舍五入）

Parameters:

v1 -

Returns:

clearZero

public static String clearZero(Double aDouble)

清楚尾部多余的0

Parameters:

aDouble -

Returns:

isNan

public static boolean isNan(String... numbers)

判断是否是数字

Parameters:

numbers - 需要验证的内容

Returns:

true is not a number , false is a number