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document.write ('<td colspan="2"><a href="/articleview/2010-1-21/article_view_3227.htm" title="JAVA核心_58观察者模" rel="external">JAVA核心_58观察者模</a></td></tr>');
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document.write ('<td style="width: 92px;"><a href="/articleview/2010-1-21/article_view_3227.htm" title="JAVA核心_58观察者模" rel="external"><img src="/image/downicon/2009javase.jpg" width="90" height="68" alt="" /></a></td>');
document.write ('<td>观察者设计模式的作用，Observalbe、Observer的作用</td>');
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