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I heard spring Framework should also be used to develop database driven applications.
what is exactly database driven application means?
Every application that persists data about you in a database to tailor the user experience to you is a database-driven app.
Examples :
Facebook saves your data so it knows who your friends are, the posts you have made and liked.
Twitter saves all of your tweets in a database, much like Facebook.
Uber uses databases to keep track of who needs to be picked up, who just got picked up, who needs to be charged how much, and how much to pay each driver, etc.
You can see full explanation here database-driven-application
So we can achieve this using spring like best-approach-to-creating-a-database-driven-java-website
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I want to create an android application which retrieve and save phone contacts on server side, then the server-side application have to manage them and find the contacts which have installed the same android application on their phones.
I need some advice for choosing technology stack? Do you know any similar solution?
Which kind of database you recommend? Are graph-based databases (like Neo4J) any good or I just use relational databases?Performance and scalability considerations are very important to me.
Any help would be appreciated.
Thank you.
I suggest you build a prototype. Begin with a server side application with a relational database. Use a DAO layer so you can change the db implemantation later if needed.
Initially, I suppose your requirements are just functionality. So go for it and build something that works. Later on, you can continue with performance and scalability considerations, but when you have reached that point you will have much more experience in what you are trying to built and alternatives you could follow.
Now the modile (Android) app is a different story. I suggest you build an app that sends and retrieves data(contacts) to and from the server to begin with.
Finally, you could download some similar apps and try to replicate their UI.
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Went I read rss from diffrent sources such as bbc, voa,... How can i plan they 'by source', 'by time',... Should I use database ? I think it make my app slowly.
Not using a database would make your app slower. Without a database every time you restart the app it needs to fetch the rss feeds from the servers. It's sensible to store the data offline and update it with the new items on startup / with a button.
Think about additional operations which need a database: labeling, starring, saving for later, etc.
This provides an additional benefit: you can store the news offline so the user can read them without an active connection.
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I'm a Java developer that hasn't coded in about 5 years and wants to polish up my skills. I am going to create a small app that uses an OAuth 2.0 authentication flow and then makes a few REST calls and displays the results. I've got my credentials setup with the OAuth provider.
I used Eclipse back in the day, is that still a solid IDE for this type of project? If I want to share the app with others to show my work, where could I host the code?
Thanks for these and any other pointers.
first off - yes, Eclipse if still a good choice.
if you can, make you app a web-application, and then you can host it in PaaS such as Google AppEngine. then the app itself will be always accessible from any machine that is connected to the web. this way, you will be able to show it to anyone you want.
if you only want to show the code, then GitHub or Google Code are a good choices.
HTH
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Hello people I'm a web developer who wants to write some Android apps. I have some experience in object oriented programming concepts and it won't be difficult to get familiar with Java. Anyways the application I want to write has two parts. One is a mobile client that has read permissions from the database, the other is a desktop client that will update and modify data in database. The database itself shall be contained in a server (just another desktop) proper to the office. Each office will have this configuration and the databases from each office will be collected to update the main database (collection of databases from all offices) which would be stored on a remote server.
My questions are:
Is it possible?
If it is possible, can you provide some guidance for a fellow code writer?
Yes it is possible. What you need is Volley to handle your API calls. Check here to get started.
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I am developing a web application that will be sold later on, and was wondering how to add the concept of license to it, so that I can avoid it's piracy, and it can be used for given period of time only?
You can have a centralize licence server , have a DB to check user's status , expose this thing using webservice so that any of your app can consume it.
I've seen Java enterprise tools do the usual serial number/license file thing. Worked pretty well for them. All you'd need to do is put some static code in the application that would execute when the JavaEE container loads the WAR file and have that check the serial number.