ucar.unidata.util
Class Format

java.lang.Object
  ucar.unidata.util.Format

public class Format
extends Object

static formatting utilities. Replace with standard java library when possible.

Version:

$Id: Format.java,v 1.9 2006/08/24 20:22:39 jeffmc Exp $

Author:

John Caron

Constructor Summary

Format()

Method Summary

static String	d(double d, int min_sigfig) Double value formatting with minimum number of significant figures in a minimum width.
static String	d(double d, int min_sigfig, int width) Double value formatting with minimum number of significant figures in a specified width.
static String	dfrac(double d, int fixed_decimals) Double value formatting with fixed number of digits to the right of the decimal point.
static String	formatByteSize(double size) Nicely formatted representation of bytes, eg turn 5.636E7 into
static String	formatDouble(double d, int min_sigFigs, int fixed_decimals) Format a double value
static String	i(int v, int width) Format an integer value.
static String	l(long v, int width) Format a long value.
static void	main(String[] argv) Main method for testing
static String	pad(String s, int width, boolean rightJustify) Create a new string by padding the existing one with blanks to specified width.
static String	s(String s, int width) Create a new string by padding the existing one with blanks to specified width.
static void	tab(StringBuffer sbuff, int tabStop, boolean alwaysOne) Blank fill sbuff with blanks, until position tabStop.

Methods inherited from class java.lang.Object

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

Constructor Detail

Format

public Format()

Method Detail

tab

public static void tab(StringBuffer sbuff,
                       int tabStop,
                       boolean alwaysOne)

Blank fill sbuff with blanks, until position tabStop.

Parameters:

sbuff - StringBuffer to manipulate

tabStop - pad out to here

alwaysOne - true if you want to guarentee at least one space.

s

public static String s(String s,
                       int width)

Create a new string by padding the existing one with blanks to specified width. Do nothing if length is already greater or equal to width.

Parameters:

s - string to pad

width - length of return string

Returns:

padded string

pad

public static String pad(String s,
                         int width,
                         boolean rightJustify)

Create a new string by padding the existing one with blanks to specified width. Do nothing if length is already greater or equal to width.

Parameters:

s - string to pad

width - length of return string

rightJustify - if true, right justify, else left justify

Returns:

padded string

i

public static String i(int v,
                       int width)

Format an integer value.

Parameters:

v - : value

width - pad to this width

Returns:

formatted string

l

public static String l(long v,
                       int width)

Format a long value.

Parameters:

v - : value

width - pad to this width

Returns:

formatted string

d

public static String d(double d,
                       int min_sigfig)

Double value formatting with minimum number of significant figures in a minimum width. This will try to do a reasonable job of getting a representation that has min_sigfig significant figures in minimum width.

Parameters:

d - the number to format.

min_sigfig - minimum number of significant figures

Returns:

string representation

d

public static String d(double d,
                       int min_sigfig,
                       int width)

Double value formatting with minimum number of significant figures in a specified width. This will try to do a reasonable job of getting a representation that has min_sigfig significant figures in the specified width. Right now, all it does is call d( double d, int min_sigfig) and left pad out to width chars.

Parameters:

d - the number to format.

min_sigfig - minimum number of significant figures

width - width of the result

Returns:

string representation, right justified in field of specified width

dfrac

public static String dfrac(double d,
                           int fixed_decimals)

Double value formatting with fixed number of digits to the right of the decimal point.

Parameters:

d - the number to format.

fixed_decimals - number of digits to the right of the decimal point

Returns:

string representation, with specified number of decimal places

formatDouble

public static String formatDouble(double d,
                                  int min_sigFigs,
                                  int fixed_decimals)

Format a double value

Parameters:

d - value to format

min_sigFigs - minimum significant figures

fixed_decimals - number of fixed decimals

Returns:

double formatted as a string

formatByteSize

public static String formatByteSize(double size)

Nicely formatted representation of bytes, eg turn 5.636E7 into

Parameters:

size - the size in bytes

Returns:

formatted string

main

public static void main(String[] argv)

Main method for testing

Parameters:

argv - ignored