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I am especially interested in generating code from sequence diagrams and vice versa- ie., sequence diagrams from code. Ofcourse it would be nice if it was free and better if it was an eclipse plugin!
Altova UModel can generate sequence diagram from the code, but I don't see any point from the opposite direction.
Anyway, UModel has 30 days free trail and it is really a great tool so you should check it.
Here is the
link.
I've never seen a tool generating code from a sequence diagram in uml or doing opposite conversion. In particular, because sequence diagrams are supposed to provide high-level overview of logic flow.
You can reverse engineer sequence diagram from code to UML.
I don't know any tool creating a java code from a sequence diagram model !!
MagicDraw is a good tool. It is written in Java and if you purchase the right pluggins will do the round tripping for you.
Be wary of round tripping too much though - it kinda defeats the purpose of designing if you do too much of it. It implies that you are not really designing and then implementing the design, but rather hacking around inside a UML tool. The project leader at one company I worked for did not allow round tripping at all and did not let developers purchase the tools to do it. Having said that, it can be useful for generating diagrams from an existing code base that you did not write, to get a high level view of design and interactions.
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I have written a Python application that takes about 4 numbers from the user and does some calculations with it. The final result is displayed on a matplotlib graph. Now, I would like to take this application and put it on a web site. I want to have users sign up for a yearly subscription, do their calculations and print the results to a PDF to be saved on their computer. Because I know Python (but just a beginner at that), I tried to learn Django, but I hit many road blocks with Python version management, getting bunch of error messages that I could not debug. My question to you is what current tools and programming language would you recommend (Java, PHP, HTML, others). I am willing to learn and try anything. I'd rather be able to look at others' code to understand what they did and how they did. Thank you.
Sounds like you are trying to build a large complex application before learning the basics. Python is fine for a server side language but you will need to get a good understanding of HTML, CSS and Javascript to pull pretty much anything of value off when it comes to the web. Take a look at sides like Team Treehouse, Code School or Code Academy. They all have great courses to give you some more knowledge around not only HTML, CSS and JS but how to leverage those technologies into a system like explained above. Good luck!
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I have programmed in Java and although offers many possibilities for the graphic customizable interface, it is always enclosed in 4 lines (which form the rectangle) ... I know (because I've used it) that you can modify the edges of the application, make round or polygonal, but you have to get deep in the code and that can be tedious.
There are some other language (Java or tool) that allows for the really striking graphical interfaces, without suffering much programming?
If you don't bother switching languages, you could try C++ with openframeworks.
That library allows you to use openGL in a simple way.
It may be time to retool. Java is still a great language for enterprise-type development. However, what is hot now, and will be for the next several years is full-stack development with javascript. Node on the backend, Angular or some other declarative framework on the front end (jQuery is popular now, but it is imperative and not really a framework, just a DOM manipulator). Now you can have an integrated environment, one language, and you can concentrate on css, html5, and tons of javascript-based libraries to do practically anything you want to do.
Just my opinion (so of course this will be voted down)
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I am new to NLP and was doing research about what language toolkit I should be using to do the following. I would like to do one of the two things which accomplishes the same thing:
I basically would like to classify a text, usually one sentence that contains 15 words. Would like to classify if the sentence is talking about a specific subject.
Is there a tool that given a sentence, it finds out the subject of a sentence.
I am using PHP and Java but the tool can be anything that runs on Linux command line
Thank you very much.
The most basic way of doing this is create a set of labeled training data and using it to train a classifier. How the classifier works is a more complicated issue- for spam filtering and many other things, just looking at the word frequency works pretty well.
Here is a basic example: http://openclassroom.stanford.edu/MainFolder/DocumentPage.php?course=MachineLearning&doc=exercises/ex6/ex6.html
It is trivial to write a Naive Bayes classifier; a package like MALLET will also have this plus better machine learning methods. Lingpipe will also have this sort of stuff.
What you really should care about is the quality of data and what your features are. By quality of data I mean lots of data without that many borderline cases, and by features I mean are you choosing just words, or combinations of words (word ngrams), or dependency features, or something more complex. You need a way to create the feature data as well as actually do the learning! In this sense Lingpipe is good as you can do tokenization and all that first as opposed to writing your own functions to do this or having to cobble other tools together into your own feature generation code.
A guide to MALLET can be found here: http://courses.washington.edu/ling570/fei_fall10/11_15_Mallet.pdf
NLTK may solve problem.
i found below web service api handy and off the shelf to use...
http://text-processing.com/demo/
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I'm currently reading Head First Java, and I am wondering if there any websites or books? that I could go to that would set out some sort of task or assignment for me to practice on. In order to gain a better practical understanding of java. Even something like a mini project and then at the end I could see a completed solution that would show me areas I could of improved my code.
Even a Step by Step project tutorial for creating a game perhaps?
Has anyone got any resources like this?
Thanks
Code Kata is a good place to find various programming assignments, and those are not language-specific. So, there's no real "one solution" to them, but they are a good way to get you thinking about different classes of problems.
I'm pretty sure I've seen another site much like that, but can't seem to think of which one it might have been right now.
Or, if you are mthematical inclined, try Project Euler.
take a look at this site it has lots of mini project related to java
http://www.1000projects.com/new/java/mini/main.html
Java Student Projects
http://mindprod.com/project/projects.html
Example Depot is a great place for real-life java examples. Try looking at examples and combining them to create a real application.
If you want more theoretical assignments: http://www.psc-consulting.ca/fenske/cpjava.htm
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What is the best open source java workflow framework (e.g. OSWorkflow, jBPM, XFlow etc.)?
Here's an article that compares kBPM, OpenWFE, and Enhydra Shark that looks like it has some good, thorough info.
It depends what kind of initial investment you want to make. jBPM is the best in terms of features and flexibility, but OSWorkflow is a more lightweight, easier to get up and running and has with a smaller learning curve.
Drools Flow is the best workflow solution that I came across recently. It has a luxury to be better than other solutions, since it is built and designed recently, and based on lessons learned from other long existing, somewhat over engineered frameworks.
Drools Flow comes as a community project along with an official Drools 5 release that besides Flow includes: Guvnor, Expert and Fusion.
Unfortunately Drools Flow does not have an official Red Hat support contract yet, and that is a stopper for some big corporations to consider it. One might think the support is not there for political reasons due to the jBPM project living under same support roof.
I'll cast a vote for jBPM. We used it on a larg-ish ETL platform in-house and it seemed to work quite well. I don't have anything to compare it to, however.
YAWL - Yet another workflow Language
http://en.wikipedia.org/wiki/YAWL