net.grinder.util

Class SignificantFigureFormat

java.lang.Object

java.text.Format

java.text.NumberFormat

java.text.DecimalFormat

net.grinder.util.SignificantFigureFormat

All Implemented Interfaces:

Serializable, Cloneable

public class SignificantFigureFormat
extends DecimalFormat

Java doesn't provide a NumberFormatter which understands significant figures, this is a cheap and cheerful one. Not extensively tested.

Author:

Philip Aston

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.text.NumberFormat

NumberFormat.Field

Field Summary

Fields inherited from class java.text.NumberFormat

FRACTION_FIELD, INTEGER_FIELD

Constructor Summary

Constructors

Constructor and Description
SignificantFigureFormat(int significantFigures) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o)
StringBuffer	format(double number, StringBuffer buffer, FieldPosition position) Almost certainly doesn't set position correctly.
StringBuffer	format(long number, StringBuffer buffer, FieldPosition position) Almost certainly doesn't set position correctly.
int	hashCode()

Methods inherited from class java.text.DecimalFormat

applyLocalizedPattern, applyPattern, clone, format, formatToCharacterIterator, getCurrency, getDecimalFormatSymbols, getGroupingSize, getMaximumFractionDigits, getMaximumIntegerDigits, getMinimumFractionDigits, getMinimumIntegerDigits, getMultiplier, getNegativePrefix, getNegativeSuffix, getPositivePrefix, getPositiveSuffix, getRoundingMode, isDecimalSeparatorAlwaysShown, isParseBigDecimal, parse, setCurrency, setDecimalFormatSymbols, setDecimalSeparatorAlwaysShown, setGroupingSize, setMaximumFractionDigits, setMaximumIntegerDigits, setMinimumFractionDigits, setMinimumIntegerDigits, setMultiplier, setNegativePrefix, setNegativeSuffix, setParseBigDecimal, setPositivePrefix, setPositiveSuffix, setRoundingMode, toLocalizedPattern, toPattern

Methods inherited from class java.text.NumberFormat

format, format, getAvailableLocales, getCurrencyInstance, getCurrencyInstance, getInstance, getInstance, getIntegerInstance, getIntegerInstance, getNumberInstance, getNumberInstance, getPercentInstance, getPercentInstance, isGroupingUsed, isParseIntegerOnly, parse, parseObject, setGroupingUsed, setParseIntegerOnly

Methods inherited from class java.text.Format

format, parseObject

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SignificantFigureFormat

public SignificantFigureFormat(int significantFigures)

Constructor.

Parameters:

significantFigures - Number of significant figures.

Method Detail

format

public StringBuffer format(double number,
                  StringBuffer buffer,
                  FieldPosition position)

Almost certainly doesn't set position correctly.

Overrides:

format in class DecimalFormat

Parameters:

number - Number to format.

buffer - Buffer to append result to.

position - Field position.

Returns:

a StringBuffer value

format

public StringBuffer format(long number,
                  StringBuffer buffer,
                  FieldPosition position)

Almost certainly doesn't set position correctly.

Overrides:

format in class DecimalFormat

Parameters:

number - Number to format.

buffer - Buffer to append result to.

position - Field position.

Returns:

a StringBuffer value

equals

public boolean equals(Object o)

Overrides:

equals in class DecimalFormat

hashCode

public int hashCode()

Overrides:

hashCode in class DecimalFormat