In Java How can we verify that i given String is a JWT Token without using Signature? I am using This works fine but I want to verify this without SECRET_KEY. I Just want to verify whether it is a JWT token or not. Answer Here is an example to check the structure of the JWT. You only need to
Tag: java
Run ES docker image with custom port using testcontainers
I want to run a container tests that running ES image via Docker. After some research I found https://www.testcontainers.org/ and they also have a built-it ES module. Because my development environment using ES in ports 9200 and 9300 I prefer to use another ports for my tests, let’s say 1200 and 1300. Therefore, to run the docker image from CLI
ArrayList gets overwritten everytime a new instance is created
I’m a new programmer, I’m terribly sorry for the walls of code, but I simply can’t find the error. I am tring to create an arrayList that stores input values, but everytime I create the 2nd instance, the first instance gets overwritten. It does print two instances, but both instances have the same value. Main block: The problem area is
How to send a list of custom objects over a socket?
How can I send elements of this ArrayList over a socket from a client to a server? I tried some structures but all needed one String to send. Answer The easiest way is to use object streams. In order to do this, shapeInfo should be Serializable: Then, you can send it using an ObjectOutputStream: On the other side, you can
When should we call join() after ForkJoinTask.invokeAll()
The API says: “Method invokeAll (available in multiple versions) performs the most common form of parallel invocation: forking a set of tasks and joining them all.” So my assumption is if I use …
How to validate spaces between two words using regex in a string [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 2 years ago. Improve this question I am trying to validate string to accept spaces between two words (in the middle). I want a regex that will accept “hello world”. I
Using Java Optional in Kotlin DTOs
Currently I’m using Java 8’s Optional in my Kotlin DTOs as follows: The purpose of it is that for some properties like prop2 I want to also allow delete in the request. So the value of prop2 in the DTO is understood as follows: null => do nothing non-empty optional => update value empty optional => delete value (set value
Why I am not getting error message in postman using Spring Boot Application
I want “Admin not found” message to display in Postman during invalid login but I am getting this as postman output AdminController.java ResourceNotFoundException.java My Postman URL http://localhost:8989/api/adminLogin My admin login success is working fine Answer I solved the problem by including the below code in application.properties file
How can I change the “disabled icon” style using SynthLookAndFeel?
I’m currently designing a Swing app with a custom “yellow on black” Look and Feel, and it seems SynthLookAndFeel is the way to go. All my buttons consist of an ImageIcon (no text), for example: When buttons are disabled, I would like the icons to turn to a faded yellow: However, the default disabled icons are just greyscale versions of
How can i add data to th:action form
I have a spring-boot application. Full url that I need: localhost:8080/company/{companyName}/users?name={name}. In the beginning i choose company, for ex. : localhost:8080/company/google. The controller redirects me to the page with the form (company.html), where i type name. Controller: In Data class i simply store company and name; My form, where i type name: So after i submit, the result url is