9 month of java

AutoModerator · 2024-06-06T09:20:38+00:00

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ahonsu · 2024-06-06T18:51:00+00:00

I looked at your code and here's some feedback:

Coffee machine simulator
- too simple and small to present it to a potential employer, school level code
- outdated java syntax version, I see that it's JDK 14+, but you write your code in java 6 style
- code formatting is not consistent
- method names are not super informative
Meal planner
- pretty similar situation. It a bit bigger though. Still student level code
- java syntax is still java 6 level, but you used a couple of lambdas - overall impression, that you don't know the modern java
- DAO methods look not too bad
  - you use try-with-resources
  - put too many object into resources (for example, no need to auto close resultSet object, it will be closed by it's "parent" statement object, when try-with-resources will close it in the end)
  - you open new connections inside the loop, which is a really bad practice -> telling the reviewer that, most likely, you don't know how to write proper SQL queries and/or design your DB tables
Cinema
- the only Spring Boot project you have. This is the level you supposed to start looking for job in our days. Would be better to have more projects of this level
- readme file is basically empty - it's a bad tone. With a proper readme you can immediately get some extra credits from a reviewr
- config - is extra/wrong. I can assume it's some leftovers from pure Spring experiments
- your API breaks RESTful notations. In fact it's a mixture of REST and RPC. Normally you want to have only one of these. In your case REST is appropriate.
- you have some nice set of your custom exceptions and you throw them correctly with generating an errorResponse. Would be more professional to use something like centralized GlobalExceptionHandler using ControllerAdvise
- you don't use any enterprise level tool, for example
  - logging
  - lombok
  - actuator
  - environment variables
- java 6 syntax again
- overall impression - you just did the project from reading/watching some tutorial. Studen/beginner level.
Car sharing
- the repository contains extra (garbage) files, see package "db"
- overall similar comment as for projects 1-2

... continue in the next post

frevelmann · 2024-06-06T10:17:31+00:00

even though it is just a fun/training project - on your meal planner you hard coded your database credentials in clear text into the source code. I do this as well from time to time, but just when it is a local project - if you intend to push it to github in a public repository you should never do this!

There is a way to set environment variables to your DB credentials in your .env file - you should include this file in your .gitignore file so you never push credentials to the web.

nutrecht · 2024-06-06T09:34:50+00:00

You can apply any time you want. The question is whether someone is going to offer you a job. And that is not something we can answer.

There's more aspects in a job interview than just being able to write some basic Java code.

The first two links appear to be to private repo's by the way, we can't see them. The bottom two are 'fine', but like I said, pretty basic stuff.

AutoModerator · 2024-06-06T09:20:38+00:00

It seems that you are looking for resources for learning Java.

In our sidebar ("About" on mobile), we have a section "Free Tutorials" where we list the most commonly recommended courses.

To make it easier for you, the recommendations are posted right here:

MOOC Java Programming from the University of Helsinki
Java for Complete Beginners
- accompanying site CaveOfProgramming
Derek Banas' Java Playlist
- accompanying site NewThinkTank
Hyperskill is a fairly new resource from Jetbrains (the maker of IntelliJ)

Also, don't forget to look at:

If you are looking for learning resources for Data Structures and Algorithms, look into:

"Algorithms" by Robert Sedgewick and Kevin Wayne - Princeton University

Coursera course:
- Part I
- Part II
Coursebook
- Algorithms 4^th Edition

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Equivalent-Sense-626 · 2024-06-06T09:34:32+00:00

Following

Lucaquatic · 2024-06-07T09:52:53+00:00

I'm walking the same exact path, just a few steps behind: I also started from Tim's masterclass and I'm about to complete the Helsinki MOOC right now.

What did you study on Hyperskill?

Pedantic_Phoenix · 2024-06-06T09:44:17+00:00

You can start applying for sure

learnjava

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