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Tag: java

Spring HandlerInterceptor fire and forget

I am wondering what would be the best way to make an HTTP fire and forget web service call inside a HandlerInterceptor (or maybe there is something more suitable). Let’s say I am handling requests and I want to notify some API for each response resulting with HTTP 5XX (by sending the request and respons…

how to compare 2 set values in the same arraylist in java

I have an arraylist of employees. Within this the id and name are non changeable, while the hours contracted and planned are changeable. I have managed the first 3 questions stated below, but stuck on the last one. Besides the 3 Classe below, i also have the Class Workspace. I have the Class Employee. This ex…

NetBeans 12 UTF-8 Chinese output with Maven projects

How do I set the output console to UTF-8 for Maven projects? This question arose because NetBeans did not decode UTF-8 documents correctly (Nordic characters like áðíøåú etc.). By doing some search on the internet I found the solution by setting -J-Dfile.encoding=UTF-8. Now I was able to view and edit files e…

Plugin with id ‘maven’ not found

Plugin with id ‘maven’ not found. I got this error in IDEA that uses with 7.1, that is strange as maven is built-in plugin, and should be distributed with gradle. When running Gradle 6.3, it seems there is no such error. Answer In Gradle 7.x, The maven plugin has been removed. You should use the m…

How to use arrayList sort and manipulate the vlaue

By using Java 11, I am trying to find the average value inside the ArrayList. The algorithm i want to develop is ((value inside list/maximum value)*100)/length of list). I got number format runtime error while I run the program. java.lang.NumberFormatException is the error i got. enter image description here …

LOG4J2 RollingFile Appender not writing to file

I’m trying to configure log4j2 by code but my RollingFile and my custom plugin”JTxtLogAppender” not working. The problem with the RollingFile is that the log file is created but it not writing to the file, neither to my custom plugin, but output to console is working. Here my code: Answer Be…

Spring boot filter is ignored

I m trying to create a filter, but it is ignored Did I forget to do smth? Answer The problem was in the absent of pom dependency Instead the Filter was loaded from some java library and therefor compilation was successful (can be removed in module settings)