In my application data producing speed (which is stored in in concurrentLinkedQueue) is greater than i can consume with single thread. I have decided to start with creating 4 threads to consume the data, to prevent my application from “out of memory exception”. Questions : Any other better design …
RxJava Live Reactive Queue (with on off switch)
Working on an android app in kotlin. I need to set up a system to be able to do work from a live queue (and observe the results of the work in a stream). But I also have to be able to toggle the “queue processing” depending on a couple external factors (which also come in as streams) like networkI…
java.lang.NoSuchMethodError running TestNG Test in Eclipse
I am getting the Exception Running Arquillian Tests in Eclipse Oxygen with TestNG and wildfly11. My Maven configuration is as follows: Answer The Solution was: remove the the Wildfly 11 Runtime from the Classpath. Right Click on the Project Build Path Configure Build Path Libraries (Tab) remove Wildfly 11 Run…
try-with-resource – finally keyword error on Java 8 [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 5 y…
SpringBoot 401 UnAuthorized even with out security
I did not use Spring Security but it is asking me to authenticate. Exception for URL(http://localhost:8080/SpringJob/ExecuteJob): application-dev.xml build.gradle snippet Controller Answer Try to add below lines in your application.properties file According to spring doc, use security.ignored= Comma-separated…
Read/Write Certificate Signing Request on Android (spongycastle)
I try to write code on Android to generate RSA key-pair and then generate Certificate Request file (.csr) like this image below: First I use spongycastle lib to generate Key Pair (public key and private key) Then I use CSRHelper class I found on this link to generate: byte CSRder[]: I write code to write byte…
Retrieve mouse position in JavaFX without event
I want to retrieve the x and y coordinates of the current mouse position before showing a stage. So far, the only way I found to get the mouse position in JavaFX is within a MouseEvent, which does not apply to my situation. Furthermore, I found the possibility to retrieve the position via java.awt.MouseInfo. …
Spring REST partial update with @PATCH method
I’m trying to implement a partial update of the Manager entity based in the following: Entity SaveManager method in Controller Save object manager in Dao impl. When I save the object the username and password has changed correctly but the others values are empty. So what I need to do is update the usern…
How to assign a value from application.properties to a static variable?
I am using Spring MVC. I have a UserService class annotated with @Service that has a lot of static variables. I would like to instantiate them with values from the application.properties file. For example in application.properties I have: SVN_URL = http://some.url/repositories Then in the class there is: @Val…
Spring Boot Controller not mapping
I have used STS and now I am using IntelliJ Ultimate Edition but I am still getting the same output. My controller is not getting mapped thus showing 404 error. I am completely new to Spring Framework. DemoApplication.java HelloController.java Console Output Answer I too had the similar issue and was able to …