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I want to build an application using Java related frameworks but i do not have an idea to start it.
The description is as follows:
I need to fetch flat files containing legacy data from UI and then send it to the structured database for storing the structured data. It is basically a conversion of legacy data into structured form.
In this above process i want to display the error logs on the UI itself.
How could i achieve this functionality and which framework or technology will be better to use? Is it good to use Swing?
You could write a simple console application. If you don't need a GUI don't use one. Otherwise Swing is fine.
You can use Spring and Hibernate to handle the database connectivity.
Logging would be via Log4j which can output to Console.
It seems you have a lot of studying to do to get started.
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in one side i have an API that store many xml files.
on the other side, an another API have to receive all these files.
i have created a service in the first API that create an ByteArrayOutputStream with all the files and return it.
But i'm not sure it's the best solution if files are too large.
How can i receive in a safe way all the xml files in my second API ?
The best way to develop a file transfer system is to not develop the code yourself. Use an existing solution.
The best way to develop a file transfer system in Java is to minimize the code you write yourself. Use an existing Java library.
There are many software packages, libraries and/or protocols that you could use. Asking us to recommend specific ones is off-topic. When you do your research, make sure that you include your security and integrity requirements in your assessment criteria.
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I am new to android and I have covered the basics in java for backend and xml for frontend. What I would like to know is: is it possible to develop an android application completely using react and node? Also, how would it be implemented? If there are some tutorials available for this that anyone could recommend, that would be helpful. I want to know if android backend can be built in any language other than java, c/cpp.
If you read https://facebook.github.io/react-native/ you will know a bit more of how it works, but to build a native app, you need to use a framework that generates native code, or write in a language that the device can compile, like the ones you sad before. React Native generates native code.
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I have to design an application which gets requests from multiple sources like Web service (can be SOAP or REST), online system, Message Queue or some batch job. Application needs to interface with 2 more applications for getting results. I understand that this can be done using microservices. This application needs to be built in Java. I am looking for some framework which can help me with accepting input from multiple sources as mentioned above.
If you want to build a lightweight simple layer (single app) to cater all these requirements, I would recommend using Apache Camel. This single app can listen to rest/soap requests, read from file system, JMS store, database etc. You can even embed it into another application and have all sorts of integration with different data source and excellent and easy to configure routing and transformation engine. Plus the documentation and community is awesome.
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Hiii
I already have a desktop application using swings and jframes,i have to create a web application of it,wherein the gui will be of jsp,what can be the most convenient approach to do this,so that i could use my already generated code(linked classes,their objects and functions) in my new project...Thanks in advance
You can not use this directly.
you will have to create new gui for that,
you can use jsp HTML java code but not j frame in web application.
It is not possible to reuse it the way you described. You will either have to rewrite GUI, or backend, or everything if decoupling one from the other is not possible.
If I desperately needed to reuse the GUI I would have introduced a network (via an RPC, say JAX-WS) in the least contended place (draw class collaboration diagram and partition it in two halves such that GUI is on the left, backend is on the right and the number of lines crossing the cut is minimal (aka Min Cut). The thin GUI can be exposed to the client via Java Web Start.
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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.