Trying to get OpenJDK 17 installed for Pufferpanel. User pi can do java -version fine however Pufferpanel gets bash: java: command not found My /etc/profile and /etc/profile.d/java.sh have these lines: In addition JAVA_HOME=”/usr/lib/jvm/jdk-17.0.1+12″ is set in /etc/environment Full permissions h…
Tag: java
Remove an Object from an arraylist in a hashmap
I need your help, I created this two classes I need a method in Graph to delete an Arch from the ArrayList that I have in the hashmap. I tried like this in the class Graph: but when I tested it in my test main the result is that nothing changed in my ArrayList in the hashmap. someone can help
Spring Boot Hibernate Many To One not saving joinColumn result
I’m trying to store images in MySQL using Spring boot, I have a user entity and I want to create a Many To One relationship between my FileUpload entity. I’m using react on the front end and the purpose of this upload service is to have profile pictures that a user can set themselves but I’d…
Cannot resolve org.springframework.boot:spring-boot-autoconfigure:2.6.1 springboot | dubbo
When I used maven to import the jar package of dubbo-spring-boot-start, the following error occurred: Springboot 2.6.1 and the dubbo-spring-boot-starter version is 2.7.3 Here is my pom.xml: What’s the reason? When I add the dubbo-spring-boot-starter jar package, I get an error, but it can run when I dow…
CommunicationsException: The last packet sent successfully to the server xxx milliseconds ago
I have a question about MySQL/JDBC connections in Java. I wrote an application that successfully communicates with a database, but the issue that I recently found out was that my DB connection was dropping, and I need the application to have a connection to the DB at all times. This is a small snipplet of the…
Redirect to another page with @RequestBody
I’m struggling with something. i pass JSON data to my controller In my RestController, i handle this information like this saving the JSON elements into the object myRequest. The thing is, having @RequestBody forces me to stay in that JSP, but i want to after processing this information, redirects to an…
How to arrange list item in spinner in ascending order
How to arrange items in list descending instead of the image: to be like this: and this is the below adapter I use: and this is the setupPrice() method which I need to arrange the entities in: Answer You can implement a Comparator like this for your Sm class before passing it into the adapter. Just like what …
OpenAPI @RequestBody variables of type Map are not populated
I’ve a simple POST API where the @RequestBody contains a variable of type HashMap. The problem is that the variable “myMap” is never populated. Swagger UI shows the entry field correctly, with corresponding default values. I also added the a static block in the Configuration file, otherwise …
How to sort files in a stream by partial filename?
I use the following to sort files first by name, then by modification date: Question: how can I refactor the File::getName part to only compare based on partial filename, like: StringUtils.substringBefore(file.getName(), “_”)? Answer You could replace the method reference with a lambda expression …
How to make Bottom Sheet Dialog that shows one time only
I want to create a Bottom Sheet Dialog. It looks like the image below enter image description here I have tried many methods such as SharedPreferences. But it not working Answer