I tried to submit a flink job that is already packaged in a JAR. Basically it consumes a kafka topic protected by SASL authentication, thus it requires a .jks file which I already include them in JAR and read in the code as: I tried to submit the job on two different (different VM specs) standalone server for the sake
How to change an already generated project language from Kotlin to Java in Android Studio?
I created a project using kotlin as the prefer language but for some reasons I want to use java. I don’t want to create this project over. Answer Just create a file with extension .java and work on that
How to make all images in Grid Overlay flush?
I am trying to implement a GUI for a maze-based game I created that meets the following specific conditions: The GUI itself has a set size and is not resizable (line 41) . The master panel (line 57) that contains all the maze images is scrollable. All maze image components are flush with each other. If maze is small enough,
Java Inheritance, instanceof, casting – how to accept a children object throught parent object?
I have three classes: (Parent) Animal, (Child) Bird & Monkey Monkey has weight & two pet Animals, which can be another Monkey, or bird Bird has weight & a name (weight, name) Together, they form a TREE, where leaf nodes are Bird, and non-leaf nodes are Monkeys (SEE VISUAL) While recursively traversing this tree to find a bird with a
Java: Abstract class with builder pattern
I hope this isn’t a duplicate; I know there are some similarly named questions but none of them seemed to solve my problem. I have multiple classes that are exactly the same – apart from one specific method. So I decided to create one abstract parent class, let’s call it A. A runs all the code and has one method
how to handle date comparison in Java during daylight saving?
Not to run code at 5:30 Morning in Summer and not to run code on 6:30 in winter. In Java Code, Applied following but now winter comes and we need not not run it at 6:30 AM How to handle this use case for daylight saving areas? Answer You can use TimeZone’s inDaylightTime() method to determine if day light saving
How to retrieve the URL of a RequestEntity obtained from RequestEntity.post(String, Object…)
I’m using Spring Boot 2.6.1 with Spring Web MVC, and in my controller, I want to get the received RequestEntity instead of only the request body, because I have to use information such as the URL. When I want to test my controller, I build a RequestEntity with the following code: Now, I don’t know how to retrieve the URL
Error creating entityManagerFactory.Unable building Hibernate SessionF.SchemaManagementException:Export identifier[new_user]encountered more than once
My controller class – My JpaRepository extended interface – My Pojo class – And , the errors which it is giving is – org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘entityManagerFactory’ defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.tool.schema.spi.SchemaManagementException: Export identifier [new_user] encountered
Update 1 or multiple specific field MongoDB using Spring boot WebFlux,Spring Data MongoDB Reactive and ReactiveMongoRepository
I’m newbie with java. I tried to implement update method for my API. I want to update some field of my data. Here is my data class: My service interface: And implement for services: My Controller: And Task Repository: My data in DB: My request body: I expected: But it responsed: It update my missing value in request with null
Im trying to delete elements of an arraylist via inputs but the program stops at the third input, I would like to know why it does that
Im trying to delete elements of an arraylist via inputs but the program stops at the third input, I would like to know why it does that. Scanner scan = new Scanner(System.in); } Answer There are a couple of problems with your program. The condition of for loop was not correct and some other minor issues. Here, is a better