I have the following JPQL request; But it prints following error: What the reason of my problem? Answer You have no whitespace between lines also check that the ?3 param is not empty list
Grpc.Core.RpcException method is unimplemented with C# client and Java Server
I am having trouble finding the source of this error. I implemented a simple service using protobuf: When using a java client everything works fine, the server receives the request and responds appropriately. When using C# with the same .proto file for generating sources at the client.Login() I get the follow…
Adding hover listener to cells of a specific column in javafx table
I want to create a OnMouseOver Listener to cells of a specific column of a TableView, such that a popup window should appeared with some message, when I hover to it’s cells. This is how I am creating a table and its columns. So is it possible to do it. I know how to create listeners for rows. But I
How to create a generic DAO for CRUD methods
I’m trying to create a generic DAO for the basic CRUD methods so that I can reuse the code, but I really have no clue how to start. I already have a DAO for every class, and they work perfectly. I read lots of tutorial, and downloaded projects, but I can’t adapt (or understand) it to my program. H…
In for each loop i want to skip “, ” in last iteration
I want to skip printing “, ” in last iteration. I want output like name, name, name Output now i am getting is name, name, name, Answer You can append the comma before you append the name. Like this:
Get all texts after and between by using Jsoup
I am learning Jsoup by trying to scrap all the p tags, arranged by title from wikipedia site. I can scrap all the p tags between h2, from the help of this question: extract unidentified html content from between two tags, using jsoup? regex? by using but I can’t scrap it when there is a <div> betw…
Java how to user JFileChooser to save a excel file created by Apache POI
I want to save a spreadsheet file to a user custom file folder, people suggest to use JFileChooser, but I actually don’t know how to achieve it. I have my current example code here: Currently it only save the file to the default project directory. But I want it to be saved to a user selected path with a…
Testing method called with specific string
I am trying to find answer to my question but unable to find something working. I have a class which does this and my test is How would I test that calling llw.logInfo actually calls lambdaLogger.log with the appropriate string? Answer Invoke the logInfo() method on the instance under test : And use the Mocki…
How to set rate limit for each user in Spring Boot?
I am developing a Spring Boot Rest API which handles a lots of incoming request calls. My Controller is something like below: So now I wanted to set a ratelimit for each user. Say every user can only request 5 request per minute or something like that. How to set the rate limit for each user to make only 5
How Java String pool works when String concatenation?
Beware: I’m not trying to compare if the characters are equals. Because I know how to use the String.equals() method. This question is about String reference I was studying for the OCA exam when I started to learn about the class String and it properties as immutability, etc. According to what I read or…