Category "java"

Does a simple REST project in Spring Boot use the MVC principle?

I need to create a simple project that uses the Model-View-Controller principle and a MySQL database. And I want to use Spring Boot with Spring MVC and Spring D

Unable to open a link in new tab using Actions Class

I am trying to open a link in a new tab using selenium java automation code. Initially i tried with actions class but it wasn't working. Later i tried using the

Unknown DataBinding Class

I am newbie to DataBinding in Android and learning it to my own. I have just enabled the DataBinding in my App Gradle File in the Android Tag as: dataBindin

Click on pop up/ alert to launch web app using selenium

Currently in my tests when i select a button a pop up appears asking me to launch my web application However I cant seem to switch onto this pop up as if its a

Understanding how this recursive method works [duplicate]

Can someone please explain how this method works? I tried adding System.out.print statements but it didn't get me anywhere and I simply cannot

Catch-all exception handling for outbound ChannelHandler

In Netty you have the concept of inbound and outbound handlers. A catch-all inbound exception handler is implemented simply by adding a channel handler at the e

com.fasterxml.jackson.databind.exc.InvalidDefinitionException for some REST operations on User entity

I have a few entities: User, Role, Privilege. And for all three entities, I have three operations which are then exposed as REST api. findOne(), findAll(), and

com.fasterxml.jackson.databind.exc.InvalidDefinitionException for some REST operations on User entity

I have a few entities: User, Role, Privilege. And for all three entities, I have three operations which are then exposed as REST api. findOne(), findAll(), and

Convert while loop to recursive [closed]

I have the following code and I want to make the while loop recursive since I need a recursive function of the nth root of a number but I don'

Convert while loop to recursive [closed]

I have the following code and I want to make the while loop recursive since I need a recursive function of the nth root of a number but I don'

Simplest way to retrieve all messages of a Telegram channel in Java?

I hope this question is not too general. I'm looking for a way to retrieve all the messages (including media) that have been posted on a Telegram channel, and a

Is there a tree-like structure where nodes can appear multiple times and even be ancestors of themselves?

I'm crawling some web pages, recursively getting all the existing links, and I would like to preserve in some kind of structure the history of links I've had to

Exception in thread "main" java.lang.NoClassDefFoundError in the eclipse

import org.openqa.selenium.WebDriver; import org.openqa.selenium.chrome.ChromeDriver; import io.github.bonigarcia.wdm.WebDriverManager; public class TestFindin

Custom sort order on a Spark dataframe/dataset

I have a web service built around Spark that, based on a JSON request, builds a series of dataframe/dataset operations. These operations involve multiple joins,

Getting error: 'Access-Control-Allow-Origin' header contains multiple values '*, *', but only one is allowed

I tried to make a connection between my Angular frontend and a REST Endpoint in Java / Spring (which I didn't developed and don't know so well). By GET, all wor

Test Fails with "when() requires an argument which has to be 'a method call on a mock' " error on maven project(no frameworks used)

Hi I am trying to mock an insertion in my database and run it for a test. The test is failing with and error "when() requires an argument which has to be 'a met

Understanding how this recursive method works [duplicate]

Can someone please explain how this method works? I tried adding System.out.print statements but it didn't get me anywhere and I simply cannot

Test Fails with "when() requires an argument which has to be 'a method call on a mock' " error on maven project(no frameworks used)

Hi I am trying to mock an insertion in my database and run it for a test. The test is failing with and error "when() requires an argument which has to be 'a met

Can't jUnit test with file from resources folder

I'm trying to unit test with a file located under src/test/resources, but I can't always get a nullpointer when I'm trying to read it. I'm using Spring Boot 2.

How to Integrate Open API 3 with Spring project (not Spring Boot) using springdoc-openapi

My Existing Project is on Spring Framework not Spring Boot. I want to integrate Open API 3 with it. I want to integrate using springdoc-openapi not using Jers