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Looking for a "web-scraping script builder" [closed]

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I'm writing the code to access and download data from some web sites using HTMLUnit.
I was wondering whether a tool that could help me exists. I think maybe to a visual tool, something that lets you express the path you want to follow on the web sites visually and generates the Java code.
I'd like something for HTMLUnit, but I'm open to other solutions.
Writing screen-scraping code gets very repetitive :(

I used to work at screen-scraper. Not sure if it's quite what you're looking for, but it's definitely a powerful tool for building web-scraping scripts.

Not exactly visual tools, but maybe you could use something like JMeter or The Grinder for recording navigation scripts of web pages. They surely are easier to use than writing all the input requests by hand in HTMLUnit.

There is only one tool that does exactly this - and does it very very well - but it's highly expensive, since their technology is amazing. Some of the biggest companies uses this. I think you might be able to get a free trail, if you want to try it out. http://kapowsoftware.com/

Simple open source DHT implementation in Java for learning purposes [closed]

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I'm looking for recommendations for a simple open source implementation of a Distributed Hash Table in Java to play around with. No fancy features, just for learning purposes, no production functionality needed. It should be simple to set up (e.g. 1 physical machine with n-JVMs) and well documented preferably with some examples, tutorials or starting guides.
Research yields these candidates: FreePastry and OpenChord but I'm not fully convinced they meet my criteria simplicity-wise.
Have you got any experience with these or other implementations? Recommendations?
Thanks & adios

There is TomP2P on Github.

Maybe JDHT will fit the bill. I haven't checked it out myself, but it's written at a university, sometimes that means it's simple and used for teaching. :-)

I have been working on an implementation of Kademlia lately. It's very simple to setup and use and it's well documented. There are several tests written that demonstrate the different functionality as well as a starting guide in the Readme.md file itself.

You can use openkad

I started with free pastry..I've had a great experience with it. It was very simple to set up and run a ring of nodes. I've been mainly using PAST (File storage) and its been quite easy to get running. I'd suggest having a look at the PAST tutorial here. https://trac.freepastry.org/wiki/tut_past
The code is over simplified in my opinion but you say that is all you need so I guess thats ok.

Best framework for build in help system for java based web application [closed]

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I am looking for a framework that will help me to build help system for my java based web application. Would be great if it will be the system that easy to use and maintain but provides all features average help system needs.
At the moment I see it as a some kind of system that will produce bunch of html pages with search functionality located in http://host/MySuperApp/docs/. The documentation will have a lot of code snippets and graphics. At the moment multilanguage support is not really needed even it is standard feature this days.
Any other features that are great but I wasn't thinking about them yet are welcome.
Any suggestions are appretiated,
Thank you guys in advance!

Some years ago, I worked with the Eclipse Help System. Eclipse is not necessarily needed to integrate it in your project. Its helpfiles are also based on .html pages. Unfortunatly I dont know if they continue developing it, but at this time it already provided all the aspects you would expect from a help system.
There are a lot examples out there on how to integrate it in your project, but its possible, that maybe there are already better frameworks today.

Have you tried http://www.sphinx-doc.org/en/stable/. It was initially created for python. Very easy to use.

Building Reports with Java [closed]

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I am building a j2ee web application with a MySQL db.
I need to whip up some reports, and slice and dice the data in various ways.
Is it best to tackle each report requirement, write the code to serve up the data?
Or, is there a framework I should look into?

Take a look at JasperReports (http://www.jasperforge.org). You can integrate it into your Java app or use it as a stand-alone reporting application along the same lines as Crystal Reports.

It's hard to give a precise answer as you didn't give many details so I'd just suggest to have a look at JasperReport (and iReport), Eclipse Birt or Pentaho Report.
This thread will give you some information on the differences between them. Or Google a bit.

recommend ireport, a sub-project in JasperReports
http://jasperforge.org/plugins/project/project_home.php?projectname=ireport

You might also want to look at Docmosis since you can do a lot of the work in the templates which are just doc or odf documents. You can't do everything in Docmosis but typical report stuff can be done faster little code.

where is the best place to start learning about servlet/tomcat? [closed]

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I need to start developing using this technology servlets/jsp with tomcat. I need to get up to speed fairly quick. What would you recommend to get up there fairly quick? No 900+ pages manuals. A good tutorial (even a video lectures) with lots of examples would be perfect.
Thanks

Check out simple.souther.us
Hanging out at JavaRanch is a good idea
Getting a Head First Servlet and JSP is worth it
J2EE tutorial is good to go too

I would install Tomcat, and look at all of the included examples. Each example shows a different feature or way of using Tomcat. If you start tomcat up with the defaults, you should be able to go straight to http://localhost:8080/examples to view them.

CoreServlets.com has a good tutorial using Tomcat 6.0:
http://www.coreservlets.com/Apache-Tomcat-Tutorial/
or if you prefer a visual approach then check out this video (wchi additionally introduces Eclipse and WTP into the mix - but it's a good practice to use this to develop simple web applications):
http://www.youtube.com/watch?v=-l0CFxdroTE

I think that the following link will answer not almost all but literally all doubts that you have about servlets and give you a nice flow to study them.
this website is most appropriate since it provides examples as well and is more practical based teacher.
enjoy
http://www.roseindia.net/servlets/