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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* Copyright (C) 2008 feilong
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.feilong.core;
import java.text.DecimalFormat;
/**
* 常用的数字模式.
*
* 常用数字格式:
*
*
*
*
*
* Symbol
* Location
* Localized?
* Meaning
*
*
*
* 0Number
* Yes
* 每一个0表示一位阿拉伯数字,如果该位不存在,则显示0
* 如果对应位置上没有数字,则用零代替
*
*
*
* #Number
* Yes
* 每一个#表示一位阿拉伯数字,如果该位不存在,则不显示
* 如果对应位置上没有数字,则保持原样(不用补);如果最前、后为0,则保持为空.
*
*
*
* .Number
* Yes
* 小数点分隔符或货币的小数分隔符
*
*
*
* -Number
* Yes
* Minus sign 代表负号
*
*
*
* ,Number
* Yes
* Grouping separator分组分隔符
*
*
*
* ENumber
* Yes
* Separates mantissa and exponent in scientific notation. Need not be quoted in prefix or suffix. 分隔科学计数法中的尾数和指数
*
*
*
* ;Subpattern boundary
* Yes
* Separates positive and negative subpatterns
*
*
*
* %Prefix or suffix
* Yes
* 数字乘以100并显示为百分数
*
*
*
* \u2030Prefix or suffix
* Yes
* 乘以1000并显示为千分数
*
*
*
* ¤ (\u00A4)Prefix or suffix
* No
* Currency sign, replaced by currency symbol. If doubled, replaced by international currency symbol. If present in a pattern, the
* monetary decimal separator is used instead of the decimal separator.
* 货币记号,由货币号替换.
* 如果两个同时出现,则用国际货币符号替换; 如果出现在某个模式中,则使用货币小数分隔符,而不使用小数分隔符
*
*
*
* 'Prefix or suffix
* No
* 用于在前缀或后缀中为特殊字符加引号, 例如 "'#'#" 将 123 格式化为 "#123".
* 要创建单引号本身,则连续使用两个单引号,例如"# o''clock"
*
*
*
*
* @author feilong
* @see DecimalFormat
* @since 1.0.2
*/
public final class NumberPattern{
/**
* 整数,不含小数 {@value}.
*
* 示例:
*
*
*
* 88.6 会被格式化成 89
* -88.6 会被格式化成 -89
*
*
*
*
* @since 1.0.7
*/
public static final String NO_SCALE = "#";
/**
* (2位小数点) {@value}.
*
* 示例:
*
*
*
* 88.6 会被格式化成 88.60
* -88.067 会被格式化成 -88.07
*
*
*
*
* @since 1.2.2
*/
public static final String TWO_DECIMAL_POINTS = "#0.00";
//---------------------------------------------------------------
/**
* 百分数的表达式(不带小数) {@value}.
*
* 示例:
*
*
*
* 0 会被格式化成 0%
* 1 会被格式化成 100%
* 100 会被格式化成 10000%
*
*
*
*/
public static final String PERCENT_WITH_NOPOINT = "##%";
/**
* 百分数的表达式(1位小数点) {@value}.
*
* 示例:
*
*
*
* 0 会被格式化成 0.0%
* 1 会被格式化成 100.0%
* 100 会被格式化成 10000.0%
*
*
*
*
* @since 1.0.7
*/
public static final String PERCENT_WITH_1POINT = "#0.0%";
/**
* 百分数的表达式(2位小数点) {@value}.
*
* 示例:
*
*
*
* 0 会被格式化成 0.00%
* 1 会被格式化成 100.00%
* 100 会被格式化成 10000.00%
*
*
*
*/
public static final String PERCENT_WITH_2POINT = "#0.00%";
//---------------------------------------------------------------
/** Don't let anyone instantiate this class. */
private NumberPattern(){
//AssertionError不是必须的. 但它可以避免不小心在类的内部调用构造器. 保证该类在任何情况下都不会被实例化.
//see 《Effective Java》 2nd
throw new AssertionError("No " + getClass().getName() + " instances for you!");
}
}