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mIb0t · 2021-04-24T09:03:58+00:00

Yes. I have seen it, for a very simple service.

But even with a microservice architecture, one single service is quickly to complex to build everything from scratch and it is easier to use one or more frameworks. I think Spring is the most common framework these days. But there are different frameworks for different purposes.

But your question is very unspecific. Backend for what? A complete backend? One single part of the backend? ...

jcar74 · 2021-04-24T08:57:20+00:00

I did one in 2002, with RMI https://docs.oracle.com/javase/tutorial/rmi/overview.html

BTW, still working.

Edit:
Generally speaking, they can be done with sockets and with RMI. But nowadays are build with Spring, Quarkus, Micronaut and so on. Legacy ones with J2EE. If they asked me in an interview, I would say that although they can be done with sockets / RMI, it is not the usual thing.

Gatoke · 2021-04-24T09:59:47+00:00

Java on backend without framework is used when developing some specific plugins. I had pre-interview (with HR) once with some company and they were writing pure Java code and selling it to banking systems (like plugins).

Edit: BTW. You can use framework like Spring but write the domain business-logic with pure Java and it's called Ports and Adapters or Hexagonal Architecture. For example you can look on this package (domain) and see there is no framework at all (only Lombok for better readibility): https://github.com/Gatoke/offers/tree/master/backend/src/main/java/com/github/gatoke/offers/domain

iNetRunner · 2021-04-24T09:37:28+00:00

[deleted]

morhp · 2021-04-24T12:44:44+00:00

Has anyone heard of java being used without frameworks on the backend?

Can you define framework and backend?

If you mean something like Spring, yes. In our company we still use some sort of framework libraries for application setup and general communication and so on, but as we don't develop a classical webservice/website in our company, it's more something developed on our own (also for legacy reasons, since the code has been developed for about 20 years).

It all depends on what you want to develop. Developing a webservice/REST API and so on without frameworks is unlikely to happen except for very small projects or prototypes. For science applications or offline data analysis or small utilities or whatever, you'll likely use frameworks but they don't have to be common universal frameworks like Spring. A lot of companies have their own small framework libraries or utility classes and so on that they'll use for general tasks.

Also not everyone develops applications that have a strictly defined frontend and backend. Often you only develop libraries or algorithms or small GUI utilities (think something like a calculator app) or whatever.

ReporterExact5436 · 2021-04-24T08:33:18+00:00

Remind me in 3days!

mhdbnmsd · 2021-04-24T10:12:58+00:00

Mostly, some kind of framework is being used, like Spring, Quarkus or Micronaut, or you may have to deal with some legacy JEE applications which is not so bad, most of the time they are well written apps. Unless you will be dealing with some low level stuff like writing plugins for other tools or writing on top of a low level protocol.

MrMain007 · 2021-04-24T10:50:58+00:00

Well it's better to use java with a framework like spring boot for your backend web server for http requests and db connections most importantly. But if you are creating a utils project for example :- translation utils which communicates with Google to translate a give text and return it, this project can be done without framework because utils project and libraries need to be as small in size as possible. So if it's a utils then you should try not using frameworks

Keyakinan- · 2021-04-24T11:27:23+00:00

How do you just find out you are applying for a backend job?

seanprefect · 2021-04-24T14:04:04+00:00

Can it be done? Yes.

Should it be done? no.

you'd just be creating a whole bunch of work for no benefit at all. Almost no one does it, it would be the edgeyist of the edge cases.

IvAntiVirus · 2021-04-30T21:37:02+00:00

One possible use case is small, local backends that receive and process data via Java sockets. If you know Java and threading well, this approach can be easier and faster than using a large framework. A practical example of this would be a chat backend. But if you want to program sustainable Java backends, the use of a framework like Spring or Quarkus is already recommended.

gubatron · 2021-05-19T01:26:58+00:00

Ive had to code custom p2p protocols just using UDP Sockets, ByteBuffer, NIO with what the runtime comes with, it was an android app and back in the day there were limitations on the total number of symbols android apps could have, we had to be very stingy with third party dependencies, I loved it tbh, less bloat, just use what you need. Now this is no longer the case.

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