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I have to submit a project in my college for which I have only two months! I already have an idea of what to make but don't know which technology to go for. I want to use something latest so as to make my project more efficient and flexible.
I wanted to make something like "Attendance Management System" in which we can take attendance of students and save the records on underlying database, also to perform some kind of data mining on the data (to find some interesting patterns like the_most_attended_lecture or to apply some probabilistic model to estimate the_next_possible_bunk or analysis based on an individual student record to compute anything interesting...) and then to develop an android app for the UI that can handle request and response to the database.
I'm really confused as what to go for? Currently I have no knowledge of the following but my friend suggested me to choose among them: node.js (with express framework) REST API, PHP, JSP, JSON, and MongoDB.
I would really appreciate your help guys. Please help. Thanks
Lets try to decide the technology stack according to your requirements.
1. Latest technology - Although you didn't give any justification for this requirement. But as you want, latest fads going on are for web server are node, go lang, nginx(if you happen to choose php in the end) and mongo, elastic search for data store.
2. Less amount of time - You have only 2 months to learn the technology, build the prototype , design the db schema, implement everything and test. Hence I will suggest you to go with node.js or php(I am assuming you are familiar with JS and php).
3. High database IO - I don't know what scale you will be working upon but the only major thing you server will be doing is DB IO, hence you should choose some non-blocking technology and among them most famous is NODE.JS.
Node.js is something which is fulfilling every requirement.
If I were you, I would have choose express.js (express init and you are ready to go), Mysql (If you are not familiar with any NoSql as mysql seems to be fulfilling every requirement). And android app could be anything like cordova as app is doing nothing but HTTP request and some presentation of data.
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I've always been a backend C/C++ developer. Working on a Java project (Netbeans), and I am trying to figure out how to do the front-end/UI. While I am a pretty good back-end dev, I haven't really been keeping up with the latest and greatest in frameworks, etc. for the front-end.
The Java back-end component can communicate with JSON over websockets. I am trying to figure out what front-end framework I should use. I also don't want to recreate my project, and would just like to add to my current Maven web application project.
So what's the verdict? What's hip and cool these days? HTML5? JQueryUI? (are they even mutually exclusive?)
Should also mention that I just want to make a quick UI, b/c I am planning on handing off the task to another programmer for a "proper" front-end component later on. At the same time, I do want my version to be "decent". So, in a nutshell, I want something that is easy to use, but still capable.
Thanks!
Assuming this a web app, Angular is getting popular and Bootstrap has been popular for a while. Use pre-built templates you can find for free or at a site like http://themeforest.net . Don't waste your time trying to code your own, unless its super simple.
You probably want to also think about how the backend will communicate with the front if you haven't already. For example, will it use Servlets, or a framework like Spring Roo? You can also build the front in a completely different language, like PHP, as PHP outsourcing is cheaper and easier to find than Java . PHP is a server side language like Java, but I'm talking about a situation where the website's backend communicates with the java backend via an API or sharing a DB. PHP has many MVC frameworks such as Symfony and Laravel.
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I have one question about how to construct app with vaadin and rest to gain good performace and scalability. I want to make rest api as a business layer and vaadin as ui for web. Ive made this decision cause my app will be also available as standalone version and on mobile os (ios and android). For me this idea is good if we are speaking about scalability but what about performance. Lets take about 5 thousand concurrent users for example.
I want to know general data about performance and will it be good for a lot of concurrent users. Only vaadin is hard to gain good performance with a lot of concurrent users (cause anyway almost all the code is running on the server). And if we also add rest api for any vaadin operation inside im scared that i will gain fatal combo.
Of course vaadin and rest api are located on the same server.
What do you think about it? Thanks a lot for answers.
I don't think it is a good idea, as Vaadin is a server side framework, so every action you do goes to the server, and from there on it has to make another rest service call to another server from where you have to get data and render it. I would rater suggest you to try some client side frameworks like ExtJS, Jquery, Angular JS, GWT etc... You render your UI on the client side using these frameworks and any action which requires data ops like fetching data or perform transactions you can make a rest service call to the server side. Using this approach you can avoid another redirection.
Now a days you the concept of RWD is getting popular, I think this would be a great choice for your use case. Build once deploy on any device :)
BTW, this is purely my opinion.
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I have an app out in the market and planning to maintain basic user data somewhere on backend.
My app is free so I am NOT getting any money from users.
My question is what is the best way to store this data(data has name, email, phonenumber etc.)
One option is to use Google Mobile Backend starter kit but that seems too complex for such a small requirement.
Appreciate your help.
Thanks.
Ok, there are many options you can achieve your goal and these options depends on your proficiency in other areas apart from java and your preferences. Below is just a small list,
Server side language: php, jsp, etc
Database: MySQL, NoSQL, SQLite, etc
Webhost: any free provider (just google "Free webhosting service")
Client side: as you mentioned you already have an app on play store so you will have to update you application accordingly and release new version.
I prefer to use combination of php and MySQL for all my back end work as I feel it is very easy to create and maintain. I also use 000webhost.com as free webhosting service, this service is completely free and also supports php and MySql without any restriction.
First Step I would suggest you is to choose your web-hosting provider, sign up on it and setup your database through PHPMyAdmin (Very easy to do so if you know basic database fundamentals).
Second step would be to create an API according to your choice of server side language (I am assuming you would use php but you are free to use any other language). If you don't know any server side language then you might want to follow some online tutorial and get your self familiar with php (which is again very easy of you know some other programming language). You can simply start from coding basic functions such as retrieving all data and echo them on browser or insert some fields in database, etc. I would advice you to completely code and test all your functionality on normal web browser before you go on about updating you android application and the reason is that once you know what response you are expecting and you have tested it on computer screen it becomes easy to code it for android.
And the final step would be to update your android application, for this well know process is using json strings for sending and/or retrieving data to/from database. If you are only looking to insert few fields in database then you can also use GET or POST methods to send and receive data. And the good news is there are many great tutorials available online for HttpRequest from android you can google it yourself.
Disclaimer: I am not promoting any free/paid service provider in my answer, the only reason I mentioned name is because OP has asked twice for it. If you are thinking of downvoting or flagging the answer for that reason please leave comment and I would delete it ASAP.
I would use a simple php page that captures user data via json from Android and saves them in a MySQL db (technology simple and very cheap, there are many hosting php + mysql free or very low cost);
but if you prefer a java-oriented approach, although slightly more complex
I advise you to Google App Engine that is free (with well-defined limits):
http://www.vogella.com/tutorials/GoogleAppEngineJava/article.html
using the latter you will need to use servlets (do not recommend endpoints) and use JPA to access the database which provides GAE (NoSQL database)
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I am trying study web development using Java but its seems very intimidating. all the tutorials are showing very complex methods, even the sample applications that came with NetBeans. I have some experience working with PHP but none with java.
Is there any simple way to use java on the server to just accept post requests and save to database and then display data from database without using things like javaServer faces?
Is it necessary to use frameworks like spring?
Pls forgive if i am asking stupid questions. i cant seem to find where to start learning from and tutorials seem too confusing.
Links to any good article will be very helpful
Thanks
For this purpose you should be familiar with the Servlet API, and preferably also with MVC frameworks and so on.
For the whole world to be a bit more straightforward for you and to steer away from the average-PHP-community-drawbacks (e.g. nobody tells you how to code well), I'd recommend to read THIS book.
But first of all, start HERE and then move on to THIS SITE.
The other way around (talking about DB access, not the web service here) is using raw SQL via JDBC which I won't recommend unless you have a good reason for it and you're already familiar with using a DB the right way (mysql and mysqli libs of PHP won't necessarily drive you the right path; PDO most probably will however).
Of course you don't necessarily need to use frameworks, but you're (actually in any language) way better off using them. Yes, probably the closest thing to the "nobrainers-php-methodology" (mindless coding; wiring UI, DB access and business logic together in a single file; etc.) is using the Servlet API, and then through a java.sql.Connection send your GET/POST data directly to the DB via JDBC. But doing so is slightly worse than cruelly murdering cute little squirrels/bunnies/kitties/insert_your_favourite_cute_creature_here
You'll also need a servlet container, most common of which is Apache Tomcat.
To learn Web Developing with Java Play Framework 1 is very nice:
Step by Step guide for a cool blog: http://www.playframework.com/documentation/1.2.7/guide1
Documentation: http://www.playframework.com/documentation/1.2.7/home
CRUD module documentation: http://www.playframework.com/documentation/1.2.7/crud
You get compile feedback directly in the browser.
Run your tests in the browser.
No redeployment to containers necessary/hot deployment.
No servlets.
Play 2 is already around, but going through Play 1 is much simpler if you are new a the Java world.
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I am currently in the process of analyzing the work of developing REST APIS for an Iphone Application using Java:
Firstly, Has anyone worked on development of REST APIs for iPad app or any other kind what is the kind of duration that requires to do it...and are there frequent changes in the REST APIs so that the project is a long one and my job is secure...or in general once you make APIS in 4-5 months maximum then that is THE END?
Are they something that a guy like me with no such experience in development of REST APIs can take up, are they in general something that only a guy with relevant experience can do?
If there are any good material on the internet about making them or anyway for me to get started with and go ahead with this:
I have just received the information that we need to develop 6-7 APIs for a start,,,any experienced guys about how much time it can take here is a sample workflow:
We have to click on Google maps..and based on longitude and lattitude we have to find a list of wholesale dealers related to our domain in that point and have to fetch them in JSON/XML Object...
Once the APIs are there, they are there and shouldn't change too often because it could break the app. So better put a lot of thought in the API design before you release it. How long it takes depends completely on the project. I can develop a REST API in a day, it could also take months, depending on the complexity.
It will take longer if you are inexperienced because you will need to do a lot of reading, especially when it comes to the architecture of the APIs. Again, impossible to say because we don't know your current skill-set. But in general: sure, if you are willing to learn you can do it, I don't see anything that would prevent you.
Lots of.. for a good framework have a look at Jersey. I also once found a good read about REST APIs in general: Link
As a conclusion, it's not necessarily only about developing the APIs, but also about the data you are trying to provide. Does that data already exist? Can you query it easily? How much logic do you still need in order to provide useful APIs? Those are the questions you should ask yourself as well.