I have the following data stored as lists: I need to group it as follows What I have tried is the following: But this doesn’t give the desired result. Answer Here’s how you can apply nested groupingBy To collect it in the order encountered, you can use a LinkedHashMap, Result:
java concurrency vs parallelism
I know the difference between the two clearly. Concurrency is performing multiple tasks alternately, while parallelism is performing multiple tasks at once. However, there is confusion in this code because a certain instructor has a different opinion than me. Here is code: I thought that running this code on multiple cores would run with parallelism, not concurrency, the instructor says
Challenge: Sorting Arrays [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 4 months ago. Improve this question I need a little help, I made a code to read a sequence of numbers, store them in an array and then print the even
Optaplanner chained variable corruption
Running into an issue with variable corruption on a chained variable model. The entity (Delivery{id=’3′, tasks=[…], previousDeliveryOrShift=Delivery{id=’2′, tasks=[…], previousDeliveryOrShift=Shift{id=’1′, startTime=2022-10-03T16:00}, deliveryTime=2022-10-03T16:27}, deliveryTime=2022-10-03T17:12})’s shadow variable (Delivery.deliveryTime)’s corrupted value (2022-10-03T17:10) changed to uncorrupted value (2022-10-03T17:12) after all variable listeners were triggered without changes to the genuine variables. I’ve tried using FULL_ASSERT with trace logging to see the move that is causing this
Why do arrays in recursive function permanently change when array is recursively called? (Java) [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed 4 months ago. Improve this question So the goal of this code is to recursively move through a 2d
Gradle: Execution failed for task ‘:test’. > No tests found for given includes:
I try to run this single unit test of this open-source project on GitHub with IntelliJ. The test class The build.gradle What I have tried Updating to the newest JUnit testImplementation group: ‘org.junit.jupiter’, name: ‘junit-jupiter-api’, version: ‘5.9.1’ Adding this to my build.gradle file: test { useJUnitPlatform() } The only workaround yet: When I go to Settings -> Build-Tool -> Gradle
Fail to generate allure-results directory based on JUnit 4
I failed to generate the directory allure-results in my project. I have tried many methods from google(create src/test/resources/allure.properties, set <resultsDirectory>${project.build.directory}/allure-results</resultsDirectory> in pom.xml, etc.), but all setting seems not to take effect. I also failed to redirect the result to other directories. It always said “[ERROR] Directory <project_path>/target/allure-results not found”. My command to generate report is My pom.xml is like: Answer
Issues when trying to open an xlsx restricted file: org.apache.poi.openxml4j.exceptions.InvalidOperationException
I have a big issue on a Java tool I work with. Every time I try to upload an xlsx file that is marked as “Restricted with protection”, I got the same exception There is no password on that excel file, it’s just an upgrade of MS office that apply this kind of restriction for every file that is downloaded
Unable to launch a java/javaFX code after a clone on IntelliJ
It’s very complicated to explain so sorry if it’s not clear. Basically, I’m on a group project in javaFX, and every time I clone it, my PC doesn’t recognize either Java or JavaFX on THAT project exactly. All the others work fine. So I have to do a lot of manipulation each time for it to “work” (I explain below).
This is my first Android program using Java, I am trying to use a alert dialog, but the app keeps on closing
So belove is my code, in the design i have one textview with the ID t. I am using android 5.0 to build and i have the required SDK(android 5 and 5.1). Sorry if my question looks silly 🙂 Thank you Answer call TextView t1=findViewById(R.id.t); after setContentView(R.layout.activity_main);