I am trying to append folder before for all classpath entries in manifest file. As you can see in pom file below, I am using jar plugin to add classpath entries to manifest. With dependency plugin I am copying dependencies to ${project.build.directory}/${finalName}-lib folder. I want to keep these dependencie…
Tag: java
Why does my code about Bracket Fixing hangs?
My code makes an incomplete combination of expressions with closing brackets”)” to a complete combination of expressions with the right placement of Opening Brackets “(“. If closing brackets and opening brackets are still not equal, make the first expressions to the last a priority, if…
How do you reliably know which JTable row has been selected from multiple tables if there is only one query button?
Tried on Ubuntu 20.04 in case it matters. When multiple JTables are present, but you need to look at only the the last user selected row (or cell) of the last selected JTable, how can you reliably know which one that was? I’ve tried list select listeners and focus listeners, but all fail when you are ed…
When having String and int as an output – how do I print string first?
This code doesn’t work, whenever I as an user input String data first and then int data, it just accepts input and doesn’t print out the data. If I change: position of these two code blocks, and enter int first and String as second value after then it happily prints first int number and then Strin…
Child RecyclerView setadapter doesn’t work on my Nested RecyclerView Android
I have two RecyclerViews. Parent RecyclerView works perfectly but the setadapter of the child’s in the parent adapter does not work. I tried to make some log messages in the child adapter but they didn’t even appear so the adapter is not even starting Below is the piece of code for better understa…
Optional parameters: Multiple constructors cause errors
Since in Java optional parameters are not possible, I tried to create 2 constructors. Now my problems are the private properties. There I get the error Variable ‘_mediaPlayer’ might not have been initialized In another method, I want to check if the properties are set. But how can I avoid these er…
Spring Boot, OAuth2 authentication is lost between requests
EDIT: log from org.springframework.security: ***But if I look in the logs some requests after I can get the valid auth: Debug 2022-01-17 12:31:03.945 IST “Set SecurityContextHolder to SecurityContextImpl [Authentication=OAuth2AuthenticationToken [Principal=com..security.oauth.CustomOAuth2User@, Credenti…
Why does HttpServletResponse not have a simple String of the response body?
I’ve been trying to find a way to log the response body of requests in my spring boot application. I’ve abandoned this for now and will just log in each controller before returning, because the effort to get this to work (globally, for all controllers with a Filter or request interceptor) seems in…
Segment class in ConcurrentHashMap usage
Looking into implementation of ConcurrentHashMap, I see that when trying to manipulate it(put/remove), value is found and this value is then used as lock for synchronized code which performs actual manipulation. This way only that bucket is locked where value actually exists. I also see a class Segment declar…
Parameter to pass in for type Class
I am trying to make a generic Stack class as shown but am unsure of what to put in for type when instantiating since I thought of doing however I get the following error of so I thought of using but I am unsure of what to put inside of cast() since it won’t take now I am stuck. Answer