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can you tell me how to do this in java? what is the best approach?<br />
particularly how to get the web pages and how to track the modifications?<br />
I think this will be useful for security purposes.. I can tell whether my page has hacked or not..<br />

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can you tell me how to do this in java? what is the best approach?
particularly how to get the web pages and how to track the modifications?
I think this will be useful for security purposes.. I can tell whether my page has hacked or not..


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Begin with a java open source web crawler and take it from there - that's what i'd do<br />
<br />
<a href="http://java-source.net/open-source/crawlers" rel="ugc">http://java-source.net/open-source/crawlers</a>
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Begin with a java open source web crawler and take it from there - that's what i'd do

http://java-source.net/open-source/crawlers [http://java-source.net/open-source/crawlers]

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I want to develop a project in java &amp;&nbsp;may be in Linux to download web pages n keep track of those web pages which are changing.<br />
<br />
First how to download the pages?<br />
<br />
Next how do I come to know whether a web page is changing or not?<br />
For example , if i have <a href="http://www.google.com" rel="ugc">www.google.com</a>&nbsp;in my database and if I had subscribed for that page, so how do I come to know that google has changed ?<br />
<br />
what are the parameters that I should look that I come to know whether google has changed when the server periodically downloads it ?<br />
<br />
Do I need to calculate the md5 of the page?<br />
<br />
Ideas please&gt;&gt;&gt;&gt;&gt;&gt;<br />

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I want to develop a project in java & may be in Linux to download web pages n keep track of those web pages which are changing.

First how to download the pages?

Next how do I come to know whether a web page is changing or not?
For example , if i have www.google.com in my database and if I had subscribed for that page, so how do I come to know that google has changed ?

what are the parameters that I should look that I come to know whether google has changed when the server periodically downloads it ?

Do I need to calculate the md5 of the page?

Ideas please>>>>>>


project to keep track of webpages

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.

Java

Programming includes both the specifics of the language you’re using, like Visual Basic, .NET, Java and others, but also the best practices in user experience and interfaces and the management of projects, version control and development. Other programming topics are related to web and cloud development and system and hardware programming.

Programming

Kernel programming for Linux operating systems can be done with many different languages; C, C++, Python, Perl and Java, which are some of the most common languages used.There are also many different varieties of Linux, such as Ubuntu, Fedora and OpenSUSE.