org.jfree.chart.util
Class LogFormat

java.lang.Object
  java.text.Format
      java.text.NumberFormat
          org.jfree.chart.util.LogFormat

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

public class LogFormat

extends java.text.NumberFormat

A number formatter for logarithmic values. This formatter does not support parsing.

Since:

1.0.7

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class java.text.NumberFormat

java.text.NumberFormat.Field

Field Summary

Fields inherited from class java.text.NumberFormat

FRACTION_FIELD, INTEGER_FIELD

Constructor Summary

LogFormat(double base, java.lang.String baseLabel, boolean showBase)
Creates a new instance.

Method Summary

java.lang.StringBuffer	format(double number, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos) Returns a formatted representation of the specified number.
java.lang.StringBuffer	format(long number, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos) Formats the specified number as a hexadecimal string.
java.lang.Number	parse(java.lang.String source, java.text.ParsePosition parsePosition) Parsing is not implemented, so this method always returns null.

Methods inherited from class java.text.NumberFormat

clone, equals, format, format, format, getAvailableLocales, getCurrency, getCurrencyInstance, getCurrencyInstance, getInstance, getInstance, getIntegerInstance, getIntegerInstance, getMaximumFractionDigits, getMaximumIntegerDigits, getMinimumFractionDigits, getMinimumIntegerDigits, getNumberInstance, getNumberInstance, getPercentInstance, getPercentInstance, hashCode, isGroupingUsed, isParseIntegerOnly, parse, parseObject, setCurrency, setGroupingUsed, setMaximumFractionDigits, setMaximumIntegerDigits, setMinimumFractionDigits, setMinimumIntegerDigits, setParseIntegerOnly

Methods inherited from class java.text.Format

format, formatToCharacterIterator, parseObject

Methods inherited from class java.lang.Object

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

Constructor Detail

LogFormat

public LogFormat(double base,
                 java.lang.String baseLabel,
                 boolean showBase)

Creates a new instance.

Parameters:

base - the base.

baseLabel - the base label.

showBase - a flag that controls whether or not the base value is shown.

Method Detail

format

public java.lang.StringBuffer format(double number,
                                     java.lang.StringBuffer toAppendTo,
                                     java.text.FieldPosition pos)

Returns a formatted representation of the specified number.

Parameters:

number - the number.

toAppendTo - the string buffer to append to.

pos - the position.

Returns:

A string buffer containing the formatted value.

format

public java.lang.StringBuffer format(long number,
                                     java.lang.StringBuffer toAppendTo,
                                     java.text.FieldPosition pos)

Formats the specified number as a hexadecimal string. The decimal fraction is ignored.

Parameters:

number - the number to format.

toAppendTo - the buffer to append to (ignored here).

pos - the field position (ignored here).

Returns:

The string buffer.

parse

public java.lang.Number parse(java.lang.String source,
                              java.text.ParsePosition parsePosition)

Parsing is not implemented, so this method always returns null.

Parameters:

source - ignored.

parsePosition - ignored.

Returns:

Always null.