how can i delete multi redis stream id with jedis? they have a methods calls “xdel” – what is the type that i need to send to the method to delete multi key? i declare List but the method didnt get this type. i got this error – Answer Jedis xdel method takes varags of StreamEntryID. So…
Tag: java
arranging the records in customised way
Sort Procedure First sort by the delivered date & in case of multiple records on same date sort by delivered time (Note: if a record has both ordered and Delivered Date ,it should be sorted by Delivered date only) 08-JUN: 03.00, 08-JUN: 04.00 Then look at the ordered date without delivered date which also…
How to calculate which sector of a circle a given point is with custom sectors?
So I’m making a TD game where I can place a gatling gun, and depending on which sector of a surrounding circle the mouse is in, the sprite and bullet path will change. My difficulty is with creating an algorithm which will tell me which sector my mouse is in. My circle has 16 sectors, and a radius of 30…
Android: CalendarView and Button not able to share data
I’m creating an application that lets user to list down school assignment and the deadline. In the OnClickListerner, the “selectedDate” is highlighted as an error. Is there a way to solve the issue? Answer The selectedDate is defined in another scope so it is not visible for OnClickListerner…
What is the purpose of placing a HashSet inside of a HashMap?
For example: private HashMap<Integer, HashSet> variableName; I understand that HashMap implements Map and doesn’t allow duplicate keys and HashSet implements Set and doesn’t allow for duplicate values, but what is the purpose of placing a HashSet inside of a HashMap? Do they not achieve simi…
Java Quick Sort Performance
I was doing sorting array problems and found one of the quick sorting solution extremely fast, and the only difference is the two lines of code in function 1Partition. Wondering why the following two lines of code in 1Partition can greatly improve the performance: Here’s the full source code: } Answer I…
Interface CDI wildfly external projects
So my idea is to have 3 projects: com.tests.interfaces com.tests.services com.tests.schedulers com.tests.interfaces basically is: com.tests.services is: I am deploying the “services” project and it works fine using wildfly 24.0.0. Then I am trying to have another .war project called: com.tests.sch…
Given two strings, determine if they share a common substring
This is my first Question here, I need to know why the following code does not pass Sample test case 2 in hacker rank-> Algorithms-> Strings-> Two Strings: The question is here: https://www.hackerrank.com/challenges/two-strings/problem Sample test case 2: 2 my code gives: No No but the expected outpu…
Having problems trying to test functionality that contains autowired SprngBoot with junit 5
I want to test some functinality, a service with a repo that is autowired in. I dont want to mock the autowired, this is more a integration test for debugging. My test is as follow The code is very simple The problem is that throttleRateRepository is always null. I have managed to test this sort of code befor…
Is there a way to hide all elements in JFrame
I’m currently working on Java application and I’m using JFrame and inside of JFrame i have some buttons, labels and textfields. I’m in need of hiding all the elements that are in JFrame. I don’t need to hide JFrame itself, only the elements in it so I can display some others. Is there …