In addition, there is a need to recover from errors when an HTTP transaction is interrupted partway through.

另外，当HTTP事务被中断时，需要从错误中恢复。

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They are also sent along with every HTTP transaction, wasting bandwidth, and can be complex to create and update.

在每个HTTP处理中都要发送cookie会浪费带宽，而且在cookie的创建和修改也都比较复杂。

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If an applet is bundled in a JAR file, the applet's class files and associated resources can be downloaded by a browser in a single HTTP transaction, instead of opening a new connection for each file.

如果一个applet捆绑到一个JAR文件中，那么浏览器就可以在一个HTTP事务中下载这个applet的类文件和相关的资源，而不是对每一个文件打开一个新连接。

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