I downloaded Eclipse on my Mac for school, following these instructions: In your browser, go to Eclipse Downloads. Do not use the Eclipse Installer. Instead follow these steps to download and install Eclipse. Find the Eclipse IDE for Java Developers package (make sure you do not pick the wrong package) and cl…
Tag: java
POST: Exception Status expected: but was:
Technically it should be a simple task, but I can’t find the error. I want to write a normal “POST method”, but when I tested it, it came to a problem: enter code here Status expected:<201> but what:<200>. My question is, why do I get an OK and not a CREATED? CODE: PostMapping in…
Eclipse IDE for Java Developers 2021-06 Cannot find class paths for jars
I have built a new machine and installed a fresh version of eclipse (Eclipse IDE for Java Developers 2021-06). If I run an old project it works. If I make a new project I the following error. Exception in thread “main” java.lang.NoClassDefFoundError: net/crl/CRLibs/DBI at EnvList.(EnvList.java:143…
What do spring.mvc.view.prefix and spring.mvc.view.suffix have to be?
I created a Spring Boot demo app with Maven using Spring Initializr (that’s my almost the very first usage of Spring). It works, but for some reason doesn’t show any pages besides index.html. If I’m right, that’s because of configuration in application.properties, but I just don’…
Abstract Classes & Methods In Java
I am working on a Java exercise where a parent class is abstract, and the subclasses override the isSimilar method. This method should take a device parameter. In the Server subclass, this method should compare the Brand, Operating System, and Available Services. In the NetworkDevice subclass, this method sho…
How to handle 4xx(without retry) and 5xx (with retry) exceptions in camel
I’ve a camel route which makes API request, the external service may though 4xx or 5xx. I have written HttpOperationFailedException handler to handle all HTTP related exception and I’m retrying all the Http exceptions irrespective of whether its client side or server side exceptions. I would like …
Java how to test correctly mocked instances of POI Row and Cell when use iterator forEach()
Given this code: I can test it with this: But, if I want to use forEach() instead of for loop in getRowAsString() method, like this: The test doesn’t work because when use stream.forEach() the code is not calling method getCell(index). How should I test the method to be able to use forEach() instead of …
I can’t loop my code whenever condition fails. It just prints both blocks of code if the user input is true
I am a beginner at java and I want to loop this all over again but I don’t know how. I’ve tried a while loop but it doesn’t work really well and it prints both blocks of code. What should happen is when I type “quit, Quit, or QUIT”, it should terminate. What happens instead is th…
How to map multiple enums to string (and back) using their common property with MapStruct?
I have two enums with common property – id: And I need generic MapStruct mapping of such enums (without need to define mapping of every such enum). Answer Yes, it’s possible through @TargetType annotation. You need a common interface for such enums: Then you need to be able to create enum of such …
Nested entities contains null after save
I have an entity with some nested entities like this with entity2 and entity3 like this: Both Entity2 and Entity3 have values stored in the database so when I’m doing an insert on MyEntity, I’m doing this: it works fine, the data are stored correctly in the DB with the correct foreign keys BUTR…