程序包 org.meteoinfo.data.mathparser

类 NumberExpression

java.lang.Object

org.meteoinfo.data.mathparser.ExpressionBase

org.meteoinfo.data.mathparser.NumberExpression

所有已实现的接口:

IExpression

public class NumberExpression
extends ExpressionBase

作者:

yaqiang

构造器概要

构造器

构造器	说明
NumberExpression(java.lang.Object value)	Constructor

方法概要

修饰符和类型	方法	说明
java.lang.Object	evaluate(java.lang.Object[] numbers)	Math evaluate
int	getArgumentCount()	Get the number of arguments this expression uses
java.lang.Object	getValue()	Get value
ValueTypes	getValueType()	Get value type
static boolean	isNegativeSign(char c)	Determines whether the specified char is negative sign
static boolean	isNumber(char c)	Determines whether the specified char is a number
void	setValueType(ValueTypes value)	Set value type
java.lang.String	toString()	To string

从类继承的方法 org.meteoinfo.data.mathparser.ExpressionBase

validate

从类继承的方法 java.lang.Object

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

构造器详细资料

NumberExpression

public NumberExpression(java.lang.Object value)

Constructor

参数:

value - Value object

方法详细资料

getValueType

public ValueTypes getValueType()

Get value type

返回:

Value type

setValueType

public void setValueType(ValueTypes value)

Set value type

参数:

value - Value type

getValue

public java.lang.Object getValue()

Get value

返回:

Value

evaluate

public java.lang.Object evaluate(java.lang.Object[] numbers)

从接口复制的说明: IExpression

Math evaluate

参数:

numbers - The numbers to evaluate

返回:

The result of the evaluated numbers

getArgumentCount

public int getArgumentCount()

从接口复制的说明: IExpression

Get the number of arguments this expression uses

指定者:

getArgumentCount 在接口中 IExpression

指定者:

getArgumentCount 在类中 ExpressionBase

返回:

The argument count

isNumber

public static boolean isNumber(char c)

Determines whether the specified char is a number

参数:

c - The char

返回:

If the char is a digit or a decimal separator

isNegativeSign

public static boolean isNegativeSign(char c)

Determines whether the specified char is negative sign

参数:

c - The char to check

返回:

If the char is negative sign

toString

public java.lang.String toString()

To string

覆盖:

toString 在类中 java.lang.Object

返回:

String value