svn-gvsig-desktop / tags / v1_1_Build_1004 / libraries / libIverUtiles / src / com / iver / utiles / DoubleUtilities.java @ 12319
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1 | 5211 | jorpiell | package com.iver.utiles; |
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3 | import java.text.DecimalFormat; |
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4 | import java.text.DecimalFormatSymbols; |
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5 | |||
6 | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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7 | *
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8 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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9 | *
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10 | * This program is free software; you can redistribute it and/or
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11 | * modify it under the terms of the GNU General Public License
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12 | * as published by the Free Software Foundation; either version 2
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13 | * of the License, or (at your option) any later version.
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14 | *
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15 | * This program is distributed in the hope that it will be useful,
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16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | * GNU General Public License for more details.
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19 | *
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20 | * You should have received a copy of the GNU General Public License
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21 | * along with this program; if not, write to the Free Software
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22 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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23 | *
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24 | * For more information, contact:
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25 | *
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26 | * Generalitat Valenciana
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27 | * Conselleria d'Infraestructures i Transport
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28 | * Av. Blasco Ib??ez, 50
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29 | * 46010 VALENCIA
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30 | * SPAIN
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31 | *
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32 | * +34 963862235
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33 | * gvsig@gva.es
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34 | * www.gvsig.gva.es
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35 | *
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36 | * or
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37 | *
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38 | * IVER T.I. S.A
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39 | * Salamanca 50
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40 | * 46005 Valencia
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41 | * Spain
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42 | *
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43 | * +34 963163400
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44 | * dac@iver.es
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45 | */
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46 | /* CVS MESSAGES:
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47 | *
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48 | * $Id$
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49 | * $Log$
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50 | 8765 | jjdelcerro | * Revision 1.1.4.1 2006-11-15 00:08:27 jjdelcerro
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51 | * *** empty log message ***
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52 | *
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53 | * Revision 1.3 2006/10/30 11:59:47 nacho
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54 | * formateado de double
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55 | *
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56 | * Revision 1.2 2006/09/13 08:10:07 jorpiell
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57 | * Se limita el n?mero de decimales por arriba y por abajo
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58 | *
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59 | * Revision 1.1 2006/05/16 13:02:41 jorpiell
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60 | 5211 | jorpiell | * Se ha a?adido la clase DoubleUtiles, donde ha un metodo para limitar el tama?o de los decimales de un double y para quitar los "puntos" de la parte entera
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61 | *
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62 | *
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63 | */
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64 | /**
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65 | * This class has some methods to manage "Doubles"
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66 | * @author Jorge Piera Llodr? (piera_jor@gva.es)
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67 | */
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68 | public class DoubleUtilities { |
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69 | /**
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70 | * Formats a double with an specified number of decimals. It
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71 | * removes the separator character of the integer part.
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72 | * @param value
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73 | * Separator char of the integer part
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74 | * @param decimalSeparator
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75 | * Separator char of the decimal part
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76 | * @param decimalsNumber
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77 | * Number of decimals
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78 | * @return
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79 | * The formatted double
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80 | */
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81 | public static double format(double value, |
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82 | char decimalSeparator,
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83 | int decimalsNumber){
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84 | 8765 | jjdelcerro | |
85 | 5211 | jorpiell | DecimalFormat dFormat = new DecimalFormat("#"); |
86 | DecimalFormatSymbols dFormatSymbols = new DecimalFormatSymbols(); |
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87 | |||
88 | dFormatSymbols.setDecimalSeparator(decimalSeparator); |
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89 | dFormat.setMaximumFractionDigits(decimalsNumber); |
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90 | 8765 | jjdelcerro | dFormat.setMaximumFractionDigits(decimalsNumber); |
91 | 5211 | jorpiell | dFormat.setDecimalFormatSymbols(dFormatSymbols); |
92 | 8765 | jjdelcerro | double d = Double.parseDouble(dFormat.format(value)); |
93 | 5211 | jorpiell | return Double.parseDouble(dFormat.format(value)); |
94 | } |
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95 | |||
96 | 8765 | jjdelcerro | /**
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97 | * Formats a double with an specified number of decimals.
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98 | * @param num
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99 | * Value to tail
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100 | * @param n
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101 | * Number of decimals
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102 | * @return
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103 | * The formatted double
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104 | */
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105 | public static double format(double num, int n){ |
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106 | long m = (long)Math.pow(10, n); |
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107 | num *= m; |
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108 | long aux = ((long)num); |
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109 | num = (double)((double)aux / (double)m); |
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110 | return num;
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111 | } |
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112 | 5211 | jorpiell | |
113 | } |