JCH
Java Community | Help. Code. Learn.
We are a Community full of Java developers. Connect with other devs, get help, help others and do much more!
JoinJCH
Java Community | Help. Code. Learn.
We are a Community full of Java developers. Connect with other devs, get help, help others and do much more!
JoinMiniSpotify
Hello everyone,
I'm a student at the University of Computer Management in Switzerland. I'm currently doing a project for my JAVA collaborative programming course. I have to make a MiniSpotify in Java with a server-side and a client-side. I have a lot of problems with my music, playlists etc...
I can send you the PDF of the instructions and my code as a ZIP file....

e: [ksp] No providers found in processor classpath.
I looked online, Asked GPT, Web asked GPT and nothing I found explained me the error in my case. I even tried manually defining it.
./gradlew clean build
Task :annotation-proccessor:kspKotlin FAILED...

Firebase problem
Hi guys, i am having problems with firebase. I pasted the error below
2025-05-14 16:50:07.872 10542-10602 System com.unimib.cooking W Ignoring header X-Firebase-Locale because its value was null.
2025-05-14 16:50:08.083 10542-10602 FirebaseAuth com.unimib.cooking D Notifying id token listeners about user ( YwQgxtdeTDhZL7Khi1QnirvqGXT2 ).
2025-05-14 16:50:08.320 10542-10574 PersistentConnection com.unimib.cooking W pc_0 - Provided authentication credentials are invalid. This usually indicates your FirebaseApp instance was not initialized correctly. Make sure your google-services.json file has the correct firebase_url and api_key. ...
DSA with Java
I just found this resource https://github.com/kodecocodes/swift-algorithm-club.
I am looking for this kind of quality as well as quantity learning resource of Java DSA.
Please help me, lmk, if you already know of such.
Thank you so much.
(I added those flairs/flags just because they are part of DSA journey IMO, in short, ignore the flags)...
Need help learning Fabric
I want to learn Fabric, to create minecraft mods. Are there any free sources(except for videos) i can use to do so?
Spring API help
i've written my first API using spring (and really in general). I'm getting to the end stages of code writing and starting to move into practical testing for functionality. using postman's desktop app, i can hit 3 of 4 endpoints. this 4th one postman just hangs and does nothing. no errors from the app itself. i've tried throwing in some println's in the suspected class and nothing. i'm kinda at my wits end and not really sure what else i can be looking for. i did try dashing in some breakpoints...
Java Project for School
We have to build a library api for a school project and we just transformed or api into using a database but now my userintegration test dont work and i have no clue how to fix the issue
Get output of previous command using spring shell
Need help!
how to read output of previous command in spring shell like
```sh
$ cat hi.txt
cat: hi.txt: No such file or directory...
How to override micronaut config in src code?
Most of the stuff is declared in
resources/application.properties or via env vars
But, is there some way to set them in app src?
Like
```java...Issue with Admin Login in Spring Boot Application:
https://github.com/Shruti-Rathore01/foodOrder.git
please let me know asap why Whitelabel Error Page for admin login the data for admin is in picture...

probably novice errors
###(extra context you dont actually need this)
hello hello, ive gotta do some 20~ programs for my computer class but since im still fairly new to it and only learnt it surface level to get through last year I dont really get the proper workings of the language (like ik the basic vocab and grammar but my understanding of participles and tenses suck)
sooo im gonna ask here if im facing any issues I legitimately do not know how to fix, even after a bit of google searching
...
Creating Open Rewrite Recipeies in Existing Project.
I have been hard at work porting my entire Server Code over to Kotlin from Java, Mainly to reduce possibility of nullpointers and extension functions.
Intelijs change over is a bit scuffed so I had a look arouznd in the Intelij whether there are things that might be able to undo that behaviour realtively easily.
During that experimentation I stumbled across Open Rewrite...

A problem i can't understand (JWT)
I'm trying to use jwt but every time something happens. Is this because of the version?
please have a look, thanks!...

turn-based combat game
Hello everyone,
I am working on a turn-based combat game in text mode in Java.
The game uses the Lanterna library for the user interface (TUI) and a SQL Server database to store the player login information, while MongoDB is used to store game objects (such as skills, items, etc.)....
I cannot run Springboot backend.
Springboot:2.7.18
Java:17
Gradle:7.3.3
I tried to run the backend using
gradle bootRun but got this error.
...Websites for practice
I just got an internship recently. I have no previous knowledge of java (I'm a python dev). The company I'm interning for said that python was more than enough, but now they're asking for java with springboot. I am learning java by watching a 12 hour long video by Bro Code and i want to go through with some exercises so i can get better. Please give me some good websites 馃檪
How to implement swagger aggregator in API Gateway of Spring Boot Microservices (Cannot show endpoin
Here is my question : https://stackoverflow.com/questions/79611232/how-to-implement-swagger-aggregator-in-api-gateway-of-spring-boot-microservices
I hope you can help me how to fix it?...
hello everyone
my name is oumaima .I am student and I am learning java .English ist not my first language, so thank you for your patience . I am excited to learn and improve my java skills with you all .