in the below code, i am doing descriptor matching using BRUTFORCE algorithm. i read som tutorial but they were writtin in C++, and i found that, always after the matching process, the resultant MatOfDMatch object from should be converted to DMatch objectas follows and the dMtchList should be sorted Ascendingl…
Mockito Error Is Not Applicable for the Arguments (void)
Mockito throws error “The method when(T) in the type Stubber is not applicable for the arguments (void)” for a class I’m mocking, can’t figure out why. the code in question is: I’m aware similar questions have been asked but if somebody could explain a solution for this or point …
Reading line breaks in CSV which are quoted in the file in FlatfileItemReader of spring batch
I am trying to parse a CSV file with FlatFileItemReader. This CSV contains some quoted newline characters as shown below. But this parsing is failing with required fields are 2 but actual is 1. What I am missing in my FlatFileReader configuration? Answer out of the box the FlatFileItemReader uses a SimpleReco…
Automatically create builder for class in Eclipse
Is there a way to use an automatic builder to create builder (Joshua Bloch’s Builder Pattern) for classes in Eclipse? For example an option in the menu, a plugin or something else. I could not find anything under “Refactor”. Answer Maybe I am late to the party. Eclipse on its own does not pr…
Spring-boot thymeleaf load HTML file from classpath
I’ve a multi module project structure like : and on my controller: I’m getting the error message as below: Is there configuration needed to configure something specially for spring for searching templates on class path? Answer Adding following properties solves my problem:
Closest divisible integer
Example. How can I find the integer c? The result of that example is c = 250. Answer There are two cases to consider: The closest integer that is less than or equal to a: The closest integer that is greater than a: Then we need to check which is closer to a and return that: So we could create
IntelliJ @IfProfileValue default value
In most projects that use Spring extensively there are a few tests that use @IfProfileValue to mark it as integration test, performance test or similar. When you run these with maven you do something …
How to create an FXML file for an already created new component in java than add it to scene builder?
I’m new to javaFX. I created a customized Search box (extends TextField) in java, check image: I tested it with a test class and it’s working. I want to know now if it’s possible to create its FXML file than add this component to scene builder ? how to do it ? Thanks in advance. Answer How t…
creating spring rest services without using spring boot
I’ve followed the Getting Started tutorial on spring.io for building REEST services https://spring.io/guides/gs/rest-service/. The problem is that this tutorial only explain how to produce a standalone running jar with tomcat embedded using spring boot. Is there a way to create a project from scratch to…
Check if JSON is valid in JAVA using Jackson
I have a JSON string which I am storing it in DB as a string. In front-end, I am rendering this JSON as object. I am using: String : Is there any way I can check If JSON is valid or not in JAVA? One thing to be noted here is that, I don’t have a schema defined for JSON