in this answer, the author said: Take an example of two entities mapped without declaring a owning side: From a OO point of view this mapping defines not one bi-directional relation, but two separate uni-directional relations. 1.My first question is: Why it is not a bi-directional relation? Docs Oracle: In a …
Tag: java
No ‘Access-Control-Allow-Origin’ header is present (CORS) – Spring Boot (Spring security) Microservices + Vue.js
I’m working on Spring Boot project based on microservices architecture on backend and Vue.js on frontend. Structure of my project is next: For avoiding CORS error usually I add @CrossOrigin annotation on to class and it works. It was all good and has been working well, until I added security part with a…
Trying to create a really simple button for my Panel, but even though i implement the action listener in the class, it isn’t working [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed 7 months ago. Improve this question I am…
Break in switch case [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 8 m…
AlertDialog In MVVM
I am building an app in MVVM pattern and I am using 3 different styles of dialogs(some of them have 2 buttons,some of them 3). Since the AlertDialog refers to the view, I wrote the code in the fragment. I have 3 dialogs in the same fragment and its look kind of messy. My questions: Is this a good practice
Align JLabel using SwingConstants
Why is my JLabel text not aligned to the left or center? Is the FlowLayout the issue? Both of the texts are just appearing at the top, next to each other and I can’t fix this. Main Class Constructor class Answer Refer to Laying Out Components Within a Container which is a lesson in the Creating a GUI Wi…
Why Java Files.walkFileTree throw a NoSuchFileException?
I’m using Files.walkFileTree to delete a directory. When running this code in CentOS, I got an error in my server log. I searched some keywords on the internet and there is no answer yet, maybe something is wrong with my code. So I wonder is it because Files.walkFileTree is not thread safe or something?…
What is difference between transient state and removed state in JPA?
I have a question about entity states in JPA. I’ve read some article about entity states in jpa and my understanding about them is that: a transient object is a newly created object that hasn’t been associated with Persistence Context and does not represent a record in database. and when we remove an ob…
Changing current windows language in intellij idea
At my primary pc i am changing current language using shift+alt(i believe that this is default for windows) but on another pc(it is not mine, but im allowed to code on it) it is done by shift+ctrl and it is uncomfortable. Can i add or maybe there is already a key shortcut in intellij that i can change to R…
Gradle implementations not working with JavaFX
I am trying to do some fun Java projects on the side to get better at coding. Currently, I’m trying to do an offline, local password manager with JavaFX and Gradle. I wanted a way to hash a password, for security, and then store it in a file. Previously, I used Google’s Guava library in an Android…