I am using a ThermalPrinter for recipes in java, or i try to. This printer accepts only Text for printing, so i need to send all commands as strings. Most are just some sequence of the asci commands. So i…
I am unable to find logs in Logcat when I try to log on physical device but when I try to log on Emulator the Logs are completely visible. I tried INVALIDATE CACHES removed and connected the device again and…
I'm trying to program Flutter using VS Code and use the BlueStacks Android emulator, but I'm encountering constant errors. I was told to install Java 8, which I did, but then I got an error in the terminal asking me…
So I have already created my database and all the tables with the appropriate columns in Mysql and connected it to springBoot. My issue is that when I create my user class which matches all the right columns on the…
What are the differences of letting spring bind JSON objects to Custom Pojos vs retrieving the response as a JSON string and using the ObjectMapper to parse? We had some legacy code that called an api and got a response…
I've been reading and seeing examples about servlets, servlet containers and web frameworks for the JVM. I'm now wondering, what's the point of using a servlet container instead of something like netty? I'm not 100% I understand it correctly, but…
I'm getting a NotFoundException: 503 SERVICE_UNAVAILABLE exception in the gateway-server logs. I'm running microservices in docker containers. I have an auth-service microservice which handles authentication and Jwt. I can connect directly to the auth-service using Postman and register, validate and…
I have a JSON object that needs to be deserialized in my use case. Also, I need to generate some fields value combining one or more attributes in the same JSON. So I chose Jackson deserialization and annotated the required…
The Java extensions for VSCode do an excellent job of catching most warnings, but recently I came across several warnings in my project that VSCode was not reporting but which I found through compiling using the -Xlint flag. Take this…
enter image description herei'm in college and a coding newbie, the professor is teaching us java but i keep encountering this error whenever i try running her codes.. this is the second time i encounter this problem but i spent…