I am building a version of Risk in JavaFX with FXML for school. Now we want to be able to right click a button to decrease the amount of troops in a country and left click it to increase the amount. The left click was pretty self explanatory as it is just an onAction, but how would we check for
Who should be parent in spring JPA relationship
I have 3 tables book, publisher, author. Here author and publisher can refer to same record in book therefore I decided to make book as relationship parent. However I also want to make it so that if a publisherA is deleted, all the book record related to publisherA also get deleted. same goes for author. I tried using cascade, but
How to access private SharedPref.java method?
My SharedPref.java is as follows: public class SharedPref { private static final String PREF_NAME = “Wallet”; private static SharedPref instance; private SharedPreferences …
Update to mapred-default.xml not visible in web UI configuration
I have an Apache Kylin container running in docker. I was getting a Java heap space error in map reduce phase so I tried updating some parameters in Hadoop mapred-default.xml file. After making the changes, I restarted the container but, when I go to Yarn ResourceManager Web UI and then to Configuration: An xml file is opened, looking like this:
Create a DateTimeFormater with an Optional Section at Beginning
I have timecodes with this structure hh:mm:ss.SSS for which i have a own Class, implementing the Temporal Interface. It has the custom Field TimecodeHour Field allowing values greater than 23 for hour. I want to parse with DateTimeFormatter. The hour value is optional (can be omitted, and hours can be greater than 24); as RegEx (d*dd:)?dd:dd.ddd For the purpose of
Assert that the two lists have the same length. Create a list of all names and surnames
Assert that the two lists have the same length. Done Create a list of all names and surnames. Done Is there any better way to do this ? or can the code be reduced? —> I need help. the output : [A, B, C, D, E, F, G, H, I, J, K, L] Answer I assume you don’t need a
How to obtain all IloNumVar from IloModeler or IloCplex
we have a client who gives us a IloModeler and we use that to solve the optimization problem doing this: and, at the end we would like to return to the client a map with all IloNumVar and their value: Map<IloNumVar, Double>. But the issue is: How can we obtain from the original IloModeler the list of all IloNumVar in
Could not find @BeforeEach setup() method on @Nested test class in @QuarkusTest
summary On Junit Jupiter the Quarkus test extension seems to not find @BeforeEach setup methods for nested test classes and produces an error: java.lang.RuntimeException: Could not find method void com.stackoverflow.examples.nestedtestwithquarkus.NestedTestWithQuarkus.setup() on test class Is that a bug, a feature or am I missing something important? edit 1: It seems like there’s an issue with nested tests in general. Some tests
Db insertion row if not exist spring boot
I have a two instances of one spring boot microservice. If two requests are sent at the same time, and the second request can update the row that was created by the first request. How i can prevent this? For example the table contains this columns :id,format,username,groupName and if a row exists (3,”test”,”test”,”test”) and if we try to insert another
how to make the program to keep asking until the a valid number is entered?
i have made a code that can ask user to input the number of student and ask to input the grade of that student, but i can’t make the program do just like the example. i tried using “do…While” and it did ask to enter the grade again for student 1 only, when i enter an invalid number for student