java - How does software update work? -

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I've been reading Liang's introduction of Java programming for a few weeks, and on the question when the author said "there is There is no need to create a developer, and to install users, the major new software version. "

How does software update work? For example, patch for the game, new versions of the products, and things like that in the book, is an example, as long as you keep the interface of a square the same, you need to make any changes to those sections Does not depend on what you change. It's fine, but still a bit abstract (for example, how can I make an update patch with only that class?).

I also have interest in books on this topic.

Thanks

refer to the book

(Jaroslav Tikh , Appress, 2008)

I think it involves aspects about which you are asking.

For the topic of shipping new software versions or updates, for example see the technology. / P>

The update of a web application can be considered in the face of the users as the changes made to a centralized server 1 are provided by the web browser.

1 or a set of servers


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