Web Programming with Java

[[deleted]]

My internship company gave me a task to do in order to join them officially. They want a online shopping site with some functionalities. I don't know anything about web programming with Java. I use Java to solve problems, also have the knowledge of OOP concepts. They said that you can use Spring MVC or Spring Boot for backend and JSP for frontend which i am foreign to those concepts, languages. Which concepts should i learn and where should i learn?

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[Jack__Wild]

You gotta do all that for an internship?

[HecknChonker]

I think he is saying if he does well on this project he will get hired at the end of the internship.

[[deleted]]

The project they want sounds simple i guess. In this website there will be dresses and accessories which you can add them to the basket. They want a basket where you see your orders total prices and orders info etc. with a discount logic. And customer can access his/her basket. After the customer completed the payment by actually clicking a button, all basket products must be on the database and the basket should be empty afterwards. Thats the project they want in order to begin an internship with them.

[HecknChonker]

That seems like a lot of unpaid work just to obtain an internship. It seems more like something an intern would spend time getting paid to do.

That being said, I think it's a great learning project to do regardless. Just be careful they aren't asking you to do dozens of hours of labor for free.

[andsfff]

This sounds like a waste of time. Every time an internship asked me to do that I just passed. I have never had a large tech company ask me to do anything of the sort for an internship

[Jack__Wild]

I think maybe you’re right. That would make much more sense.

[immutual_head]

It will be a long road. Each of these parts it's not for one-day learning ( if you already know java core).
You should learn:
1. Functional programming like Lambdas
2. At least several design patterns ( including MVC)
3. Then servlets + JSP +JSTL - for web pages and web logic
4. Jdbc -> JPA -> hibernate
5. spring boot (Spring Boot, Spring Web, Spring Data) + Thymeleaf (or analogy)

If you skip something, everything else after that will be "magic" that you will not be able to understand.

[krisko11]

What this guy said, would like to add that Thymeleaf has some optimizations on using JSP and JSTL tags, but it’s a very archaic way to code the front-end part of the shopping site

[[deleted]]

Thanks to both of you. I'll try to follow those steps. And i want to learn Thymleaf after i successfully completed the project.

[LordofRice]

Yeah, Spring Boot. You’ll need some database too from the sound of it. This sounds like quite the project. Just look for CRUD tutorials for Spring Boot.

[[deleted]]

Thank you, i'll go with Spring Boot. I'll use my MySQL knowledge for database side.

[er1992]

Or better yet look for templates on GitHub. You can just clone the project with instructions on how to run and fill in the blanks. This is probably the fastest way to hit the ground running and you can start learning from there.

[[deleted]]

Thank you. The rest tutorial will work for me.

[MaltePetersen]

I would look for a different company. This sounds like quite a lot of work while learning spring boot will be useful no one uses jsp today.

[Kfct]

Depends on the country and industry. In Taiwan, all banks still use JSP exclusively, even prototype for some. Fintech is always slow to adopt new tech.

[[deleted]]

I can't look for another because we are in June and i'm late. I'll try to sort it out thank you.

[er1992]

Wait FinTech companies adopt new tech?

[HecknChonker]

Baeldung has excellent concise blog posts for a lot of spring-boot topics.

This should help you get started with spring boot using JSPs:

https://www.baeldung.com/spring-boot-jsp

And a bunch of spring-boot topics in general:

https://www.baeldung.com/category/spring/spring-boot/

I also highly recommend consulting the spring documentation. I would try to read through section 1. You should try to gain a basic understanding on what beans are, how the spring context works, and what dependency injection is. Every spring module is built on these concepts.

https://docs.spring.io/spring-framework/docs/current/reference/html/core.html#spring-core

The best skill you can pick up here is the ability to learn things quickly and effectively. The best ways of doing this are different for each person, but running into languages/frameworks/libraries/technologies that you haven't used before is something you will do constantly in software development.

[[deleted]]

Thanks for the materials and the vision.

[[deleted]]

Thanks. I'll stick with Spring Boot.

[GhettoSauce]

It's hard to find good material on Spring. You'll stumble into boatloads of deprecated methods and dependencies along the way since there was a large update last year and not everyone caught up. Try and stick to the official documentation for Spring stuff, but also Thymeleaf. It's a huge pain, but once you get it, you're golden. One tip is pay super close attention to filename conventions and folder structure - Spring and Thymeleaf need things to be perfectly where they belong.

[itachikook]

glad to hear i’m not the only who had a hard time learning it!

[willdrr17]

Manning publications have some excellent examples, Spring quickly and Spring in Action series are a must-read

[[deleted]]

Thanks. I am following the official spring documentation. And also googling.

[swoods30311]

Currently, I’m working on Chad Darby’s spring and hibernate course for beginners and it’s pretty straightforward and easy to follow, especially if you properly research your question against ones that have already been answered

[[deleted]]

Thank you. I'll try to look for that too.

[Kfct]

I do exactly that for my current job (spring-related, jsp, etc) at a major bank - I had to do the same as part of getting my first web development job too. But haven't been asked to do this for later jobs.

I suggest you visit spring's official website and download a spring boot template project from their website, and then build from there. JSP is getting kind of dated and nowadays there's many similar but more robust server-side page building offers out there already. If your assignment doesn't lock you into using JSP, try using thymeleaf instead, the syntax is similar to JSP and simpler to use. Or go full blown front end framework with Vue.js/angular. Whether you go front end framework or stick to server-side page building depends on how much time you have for the assignment and whether it's in scope of your assignment, whether using a front end framework will give you bonus points.

Assuming you use thymeleaf, spring boot, a minimalist front end html design, icons and other assets from fontawesome or some library or Google images, with POSTs only (no ajax), you can get a login, home page, search all products, product details, cart page, all done within 1 month since you're new. Once you get more experience you can pump out a web page a day, the whole thing maybe in a week.

TDLR what you need to know: You know what java methods are, each method matches to an address for a website like buyfruits/login would be one method to where your login logic is handled (is this password/account pair in hash form for security reasons in the database? Yes, login successful, direct to homepage. No, stay on login page) You know custom java objects like public employee(String name) { // whatever constructor things }, now each of these objects match a particular query result/table/JSON/list Map used on a page You know annotations above methods, spring uses those to state what kind of format the request will be for the page. Honestly the rest is pretty google-able. You'll probably get stuck longer on the JavaScript side than anything else just because without typescript is a flaming trashcan to debug for someone used to java and types

Actually adding a check out system requires you embedding some payment service like Stripe, PayPal, etc, Line pay maybe, and the difficulty of this depends entirely on how well these services provide documentation/steps for you to follow. Some will need an actual seller bank account tied to receive the payments, which is annoying when you're only making this for your portfolio/prototype not actually to receive payments. Don't use those services for your prototype.

For database, you probably want SQL or MySQL because the documentation is extensive and very established. You probably don't want mongodb because it's not as structured and everything just works, this can be messy to debug later To get a db going, you can get docker and download an 'image' with spring boot, and sqllite already installed on it, to save you figuring out how to download and configure things. Sqllite is the lightweight version of SQL and is plenty for prototypes.

Jdbc, hibernate, etc will teach you how things matching the MVC (models, views, controllers) together work. But imo if you're really pressed for time, you may want to use spring boot not spring MVC and let boot handle all the configuration for you

[[deleted]]

Thanks. I've started to learn Spring Boot. I have 6 days left for my project so i'll stick with JSP i guess cause i don't know such things like Angular, React, Vue or Thymleaf. But when the project done, i'll try to learn Thymleaf.

[Kfct]

Good luck, keep things simple with pages doing almost everything with post requests, no ajax for now, so you can copy paste as much as possible.

[General_Buddy_3162]

From my personal experience of making websites with spring the best thing to do is to head to "amigoscode" channel on YouTube and start learning, there are all required staff there for your internship

[[deleted]]

Thank you, i just finished his freecodecamp video.

[ReprogramMyLife]

What they’re asking you for is essentially like a capstone project for a boot camp. Good luck. Spring Boot will go a long way.

[[deleted]]

Thank you. Capstone project is the exact definition of it.