﻿<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>BlogJava-魔头工坊-随笔分类-Java 基础</title><link>http://www.blogjava.net/superliuwr/category/39399.html</link><description /><language>zh-cn</language><lastBuildDate>Tue, 05 May 2009 08:18:14 GMT</lastBuildDate><pubDate>Tue, 05 May 2009 08:18:14 GMT</pubDate><ttl>60</ttl><item><title>抽象类</title><link>http://www.blogjava.net/superliuwr/archive/2009/05/05/268996.html</link><dc:creator>Marvin</dc:creator><author>Marvin</author><pubDate>Tue, 05 May 2009 07:31:00 GMT</pubDate><guid>http://www.blogjava.net/superliuwr/archive/2009/05/05/268996.html</guid><wfw:comment>http://www.blogjava.net/superliuwr/comments/268996.html</wfw:comment><comments>http://www.blogjava.net/superliuwr/archive/2009/05/05/268996.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/superliuwr/comments/commentRss/268996.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/superliuwr/services/trackbacks/268996.html</trackback:ping><description><![CDATA[<ul>
    <li>抽象类中的方法可以全部实现吗？</li>
</ul>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
可以。可以给普通类加上abstract变成抽象类，但这样这个类就不能再实例化了
<ul>
    <li>abstract 方法可以有实现吗？</li>
</ul>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 不可以
<ul>
    <li><br />
    普通类可以有抽象方法吗？</li>
</ul>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
不可以，只要有一个方法是抽象的，类就必须定义成抽象类<br />
<br />
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<img src ="http://www.blogjava.net/superliuwr/aggbug/268996.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/superliuwr/" target="_blank">Marvin</a> 2009-05-05 15:31 <a href="http://www.blogjava.net/superliuwr/archive/2009/05/05/268996.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>