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Java 创建并使用自定义数字格式、35;###、####.#####和语言环境
创建并使用自定义数字格式、35;###、####.#####和语言环境
实例源码：
源代码：
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import java.util.*;3
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import java.text.*;5
/*6
nowjava - 时代Java 提 供7
*/8
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public class DecimalFormatDemo {11
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static public void customFormat(String pattern, double value) {14
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DecimalFormat myFormatter = new DecimalFormat(pattern);16
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String output = myFormatter.format(value);18
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System.out.println(value + " " + pattern + " " + output);20
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}22
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static public void localizedFormat(String pattern, double value,25
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Locale loc) {27
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NumberFormat nf = NumberFormat.getNumberInstance(loc);29
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DecimalFormat df = (DecimalFormat) nf;31
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df.applyPattern(pattern);33
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String output = df.format(value);35
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System.out.println(pattern + " " + output + " " + loc.toString());37
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}39
/*来自 n o w j a v a . c o m - 时 代 Java*/40
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static public void main(String[] args) {42
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customFormat("###,###.###", 123456.789);45
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customFormat("###.##", 123456.789);47
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customFormat("000000.000", 123.78);49
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customFormat("$###,###.###", 12345.67);51
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customFormat("\u00a5###,###.###", 12345.67);53
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Locale currentLocale = new Locale("en", "US");56
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DecimalFormatSymbols unusualSymbols = new DecimalFormatSymbols(59
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currentLocale);61
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unusualSymbols.setDecimalSeparator('|');63
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unusualSymbols.setGroupingSeparator('^');65
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String strange = "#,##0.###";67
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DecimalFormat weirdFormatter = new DecimalFormat(strange,69
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unusualSymbols);71
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weirdFormatter.setGroupingSize(4);73
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String bizarre = weirdFormatter.format(12345.678);75
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System.out.println(bizarre);77
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Locale[] locales = { new Locale("en", "US"),80
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new Locale("de", "DE"), new Locale("fr", "FR") };82
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for (int i = 0; i < locales.length; i++) {85
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localizedFormat("###,###.###", 123456.789, locales[i]);87
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}89
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}92
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}94
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/*97
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* Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.99
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*101
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* Redistribution and use in source and binary forms, with or without103
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* modification, are permitted provided that the following conditions105
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* are met:107
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*109
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* - Redistributions of source code must retain the above copyright111
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* notice, this list of conditions and the following disclaimer.113
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*115
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* - Redistributions in binary form must reproduce the above copyright117
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* notice, this list of conditions and the following disclaimer in the119
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* documentation and/or other materials provided with the distribution.121
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*123
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* - Neither the name of Oracle or the names of its125
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* contributors may be used to endorse or promote products derived127
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* from this software without specific prior written permission.129
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*131
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS133
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,135
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR137
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