chapter5.htm

这是一个学写JAVA的好东西

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      &gt; <a href="serialize.php?id=387">Java网络编程专辑</a>
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			<div style="FONT-SIZE: 18pt; COLOR: #990000; FONT-FAMILY: 楷体_GB2312" align=center><B>基础知识</b></div><br><div style="COLOR: #990000; font-family: ; font-size: 18px;宋体;" align=center>Java的网络功能与编程(6)</div>
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            <br>&nbsp;&nbsp;&nbsp;&nbsp;<P><STRONG>九、创建URL对象的方法</STRONG> <BR><BR>　　在前面的例子中我们统一使用new URL(url字符串)的形式创建URL对象。其实，Java提供了四种创建URL对象的形式：<BR><BR>　　1.new URL(url字符串) 本文中的程序均采用此种格式，如： <BR><BR></P>
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<P>new URL("http://www.shu.edu.cn/~xyx/doc/manhua.html") </P></TD></TR></TBODY></TABLE><BR>　　2.new URL(协议，主机名，文件名或路径) 如程序2中的 <BR><BR>
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<TD>String url = "http://www.shu.edu.cn/~xyx/img/shnet.jpg"; <BR>image = getImage(new URL(url));部分可改为： <BR>image = getImage(new URL("http","www.shu.edu.cn","/~xyx /img/shnet.jpg")); </TD></TR></TBODY></TABLE><BR>　　3.new URL(协议，主机名，端口号，文件名或路径)，如：<BR><BR>
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<TD>new URL("http","www.shu.edu.cn",80, "/~xyx/doc/manhua.html")</TD></TR></TBODY></TABLE><BR>　　4.new URL(基准url，文件名或路径) <BR><BR>　　<B>十、实现网络功能的其他方法</B> <BR><BR>　　以上着重介绍了利用Java的URL类实现从网络上获取声音、 图象、HTML文档及文件数据的编程方法。Java的网络功能很强大，除上面介绍的外，还可以利用URLconnection 类实现更广泛的网络功能，如向WWW 服务器上的 CGI 程序发送信息等； 通过 Socket 及 ServerSocket类，可以自己编写客户软件及服务软件，并可以自己设计通讯协议。<br><br>
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			<div align="center">来源：天极网 作者：<div>
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