PrettyTime是一个开源的时间格式化类库。它能够将时间格式成易于用户阅读的格式，如"12分钟前"、"2天前"、"至今3个月"等。易于使用。完全可定制，可以创建属于自己TimeUnit和TimeFormat对象。能够与JSF框架集成使用。    <br /> 示例代码：    <pre class="brush:java; toolbar: true; auto-links: false;">import java.util.Date; import com.ocpsoft.pretty.time.PrettyTime;   public class BasicJavaApp {  public static void main(String[] args)   {   PrettyTime p = new PrettyTime();   System.out.println(p.format(new Date()));  } }</pre>    <pre class="brush:java; toolbar: true; auto-links: false;">package com.ocpsoft.pretty.time.i18n;   import java.util.ListResourceBundle;   public class Resources_de extends ListResourceBundle {     private static final Object[][] CONTENTS = new Object[][] {                                   { "CenturyPattern", "%n %u" },                                   { "CenturyFuturePrefix", "In " },                                   { "CenturyFutureSuffix", "" },                                   { "CenturyPastPrefix", "Vor " },                                   { "CenturyPastSuffix", "" },                                   { "CenturyName", "Jahrhundert" },                                   { "CenturyPluralName", "Jahrhunderten" }                                   //...                                   };     }       @Override     protected Object[][] getContents()     {         return CONTENTS;     } }</pre>    <br />    <p><strong>项目主页：</strong><a href="http://www.open-open.com/lib/view/home/1326938023624" target="_blank">http://www.open-open.com/lib/view/home/1326938023624</a></p>