com.twelvemonkeys.util.convert

Class NumberConverter

java.lang.Object

com.twelvemonkeys.util.convert.NumberConverter

All Implemented Interfaces:

PropertyConverter

Direct Known Subclasses:

DateConverter, TimeConverter

public class NumberConverter
extends java.lang.Object
implements PropertyConverter

Converts strings to numbers and back.

This class has a static cache of NumberFormats, to avoid creation and parsing of number formats every time one is used.

Version:

$Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/util/convert/NumberConverter.java#2 $

Author:

Harald Kuhr, last modified by $Author: haku $

Constructor Summary

Constructors

Constructor and Description
NumberConverter()

Method Summary

Modifier and Type	Method and Description
protected java.text.Format	getFormat(java.lang.Class pFormatterClass, java.lang.Object... pFormat)
java.lang.Object	toObject(java.lang.String pString, java.lang.Class pType, java.lang.String pFormat) Converts the string to a number, using the given format for parsing.
java.lang.String	toString(java.lang.Object pObject, java.lang.String pFormat) Converts the object to a string, using the given format

Methods inherited from class java.lang.Object

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

Constructor Detail

NumberConverter

public NumberConverter()

Method Detail

toObject

public java.lang.Object toObject(java.lang.String pString,
                                 java.lang.Class pType,
                                 java.lang.String pFormat)
                          throws ConversionException

Converts the string to a number, using the given format for parsing.

Specified by:

toObject in interface PropertyConverter

Parameters:

pString - the string to convert.

pType - the type to convert to. PropertyConverter implementations may choose to ignore this parameter.

pFormat - the format used for parsing. PropertyConverter implementations may choose to ignore this parameter. Also, implementations that require a parser format, should provide a default format, and allow null as the format argument.

Returns:

the object created from the given string. May safely be typecast to java.lang.Number or the class of the type parameter.

Throws:

ConversionException

See Also:

Number, NumberFormat

toString

public java.lang.String toString(java.lang.Object pObject,
                                 java.lang.String pFormat)
                          throws ConversionException

Converts the object to a string, using the given format

Specified by:

toString in interface PropertyConverter

Parameters:

pObject - the object to convert.

pFormat - the format used for parsing. PropertyConverter implementations may choose to ignore this parameter. Also, implementations that require a parser format, should provide a default format, and allow null as the format argument.

Returns:

the string representation of the object, on the correct format.

Throws:

ConversionException - if the object is not a subclass of Number

getFormat

protected final java.text.Format getFormat(java.lang.Class pFormatterClass,
                                           java.lang.Object... pFormat)