xal.tools.text

Class NumericParser

java.lang.Object

xal.tools.text.NumericParser

public abstract class NumericParser
extends java.lang.Object

NumericParser parses a string value into an instance of a specified Number subclass. It also maintains a static directory of the numeric parsers. It is useful when one wants to create a generic component for entering values that could be assigned dynamically a number and a numeric type (Integer, Double, etc.).

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.util.Map<java.lang.Class<? extends java.lang.Number>,NumericParser>	PARSER_CLASS_MAP map of parsers keyed by numeric class

Constructor Summary

Constructors

Constructor and Description
NumericParser()

Method Summary

Modifier and Type	Method and Description
abstract java.lang.Number	getNumericValue(java.lang.String stringValue) Parse the string value as a number
static java.lang.Number	getNumericValue(java.lang.String stringValue, java.lang.Class<? extends java.lang.Number> numericType) Parse the string value as a number of the specified numeric type.

Methods inherited from class java.lang.Object

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

Field Detail

PARSER_CLASS_MAP

protected static java.util.Map<java.lang.Class<? extends java.lang.Number>,NumericParser> PARSER_CLASS_MAP

map of parsers keyed by numeric class

Constructor Detail

NumericParser

public NumericParser()

Method Detail

getNumericValue

public static java.lang.Number getNumericValue(java.lang.String stringValue,
                                               java.lang.Class<? extends java.lang.Number> numericType)
                                        throws java.lang.NumberFormatException,
                                               java.lang.IllegalArgumentException

Parse the string value as a number of the specified numeric type.

Parameters:

stringValue - String representation of a number

numericType - The type of number to instantiate

Returns:

numeric value of the string value

Throws:

java.lang.NumberFormatException - if the string cannot be parsed into a number

java.lang.IllegalArgumentException - if the numeric type specified is unsupported

getNumericValue

public abstract java.lang.Number getNumericValue(java.lang.String stringValue)
                                          throws java.lang.NumberFormatException

Parse the string value as a number

Parameters:

stringValue - String representation of a number

Returns:

numeric value of the string value

Throws:

java.lang.NumberFormatException - if the string cannot be parsed into a number