Why is there still deprecated content in JDK like Thread.stop()? On the documentation site here I can see the method is @Deprecated(since=”1.2″) Since 1.2! Also, there is a note: This …
The strange behavior of the Java Deque in muti-thread environment
I wrote a simple demo code to test “how the Daemon Thread works”. But the demo shows another strange behavior: I make a Deque to hold the element called Event, and share it for two work threads, one add the element to the Deque. another check the Deque’s size and remove the element which is …
How do I recursively count up to less than n [closed]
I am struggling with the problem of having applications of loops and arrays. I have a variable “n” which represents the limit of the loop, i.e. if n = 3, the array would look like: arr[1,2,3,…
Create JVM heapdump when K8s healthcheck restarts the pod – no OOM occur
I have a situation when all of a sudden a really long GC pause occurs and I need to find out what is the source of the sudden memory allocation. The long GC pause (around 30 seconds) causes the pod to fail several K8s health checks in a row and the pod gets restarted, without OOM actually happening. I want
Do we need to add interface Runnable in our UML class diagram? [closed]
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 2 years ago. Improve this question I have created a simple FlappyBird clone game with socket programming…
Is correct to have private method in service layer? [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago. Improve this question I am developing a service using Java and Spring Framework, I have business…
gradle Jigsaw module not found
I try to run a very simple gradle project which uses java 9 modules, but i receive the following error. Here is it https://github.com/vad0/test_modules. The main class does basically nothing. It uses only one dependency: HdrHistogram. I included this magic command in build.gradle according to official gradle …
Is there a way to write groups of bits less than a byte in Java
If I was to try to make a program that outputs .Flac files in Java, Flac-format, It appears that I would need to output values less than a byte. Is it even possible to output values less than a byte such as a nybble or a 5-bit number? Answer In the end I think I can do this using bit
How to retrieve the data from firestore in maps
Is there any way to retrieve the data from firestore in Maps. I am trying but its returning null here is my code But I am getting NullPointerException here Here is the screenshot of the database I am not getting i why getdata function is returning null Here is the error log Answer You are getting null because…
My Chrome version is Version 84.0.4147.105 but available ChromeDriver version is Version 84.0.4147.30 causing an error to launch chrome using Selenium
My chrome version is Version 84.0.4147.105 but available chrome version is Version 84.0.4147.30 its causing an error to launch chrome through selenium what should i do apart from downgrading the chrome version . Answer The latest stable ChromeDriver is ChromeDriver 84.0.4147.30. This version of ChromeDriver i…