I have some String inputs that I am looping over that I am trying to convert to java 8 stream/lambdas but was having some issues. My boilerplate code looks like this: I was trying to do something like … but couldn’t get the summ’ing logic down. could anyone point me in the right direction? Answer You need to apply first
Creating a EntityIterable from multiple Entity objects
I’m trying to implement a “nearby” filter with Xodus, having this code: AtomicReference referenceToScope = …; PropertyNearbyCondition propertyNearbyCondition = (…
user detail service cannot be cast to user in a unnamed module loader app
I don’t know what I did wrong. I was trying to implement the Jwt token(only post method).it shows the exception that Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.ClassCastException: class com.vivek.discussion.service.UserDetailServiceImpl$1 cannot be cast to class com.vivek.discussion.model.User (com.vivek.discussion.service.UserDetailServiceImpl$1 and com.vivek.discussion.model.User are in unnamed module of loader ‘app’)] with root cause
How to search in arrayList then change?
So i’m making a supermarket program that allows to add products and sell them, so far i have this: I´d like to know how to search in Product list by name and then change the stock(subtract-n) to sell n of that product. Answer You can use Stream API to find out the product by name. Filter the list by checking
How do you print the highest and smallest number of ASCII value in string java
I found it, thank u mate. I actually too confuse yesterday, till i forget everything that i learnt. So here is my code, what do you think? I just don’t know why my minChar not working when i delete this code : Answer Use this method: Test case: Returns So what did we change? For starters, if we are trying
How do I get the Client Hostname and/or client IP address from within a Spring Boot application in Elastic Beanstalk?
I have a Spring Boot application deployed in AWS Elastic Beanstalk. For one of my APIs, I am need to check the client hostname address. I am using (where request is a HttpServletRequest). I know that the HTTP spec and the Java servlet spec both say that both of these values may be absent. However, I am seeing that each
Factory design patter Spring Boot double bean
Calling method executeSPV from abstract class If I remove @Componet from Upload and Download classes I receive error I need to add Bean for abstrcat class CommndBase If I use @Compoment on Upload and Download classes I receive dual Bean is useed… Field command in .Controller required a single bean, but 2 were found: Answer You should not use @Component
noHandlerFound in Spring for CSS
I am learning Spring MVC and I try to get some experience. I wrote an app and deployed it to Tomcat serve. At run time, the browser gets a 404 code for the CSS and Tomcat “WARNING [http-nio-8080-…
Custom hashCode implementation for ConcurrentSkipListMap doen’t work as expected
The idea is to allow ConcurrentSkipListMap to store only one ApprovalRequest which has unique customerId and its state is PENDING. I supplied overridden hashCode and equals implementations. Moreover, …
Non-resolvable parent POM for xxx
I’m trying to package a maven project and the IDEA console says “Non-resolvable parent POM for xxx”. The parent pom has been put in my maven local repository but can not be resolved by the submodules. The submodule’s pom.xml reports errors like this. The parent pom.xml looks like this The project seems like downloading the parent pom from the central