How do I completely remove/uninstall an application?

Question

I am writing plugin, which don't require to run main method, I want to use Spring-Context to have benefits of dependency injection.

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>5.3.16</version>
    </dependency>

I am sure that I am missing some part of configuration, but I couldn't find way how to configure spring context in my case. Test Service is null

"Main" class

    @Component
public final class GuildsFeatures extends JavaPlugin {


    @Autowired
    private TestService testService;



    @Override
    public void onEnable() {
        //testservice is null
        testService.test();
    }

    @Override
    public void onDisable() {

    }

}

Service class

@Service
public class TestService {

    public void test(){
        System.out.println("test");
    }
}

Solution

You could use apt-cache search KEYWORDS to search for the package name which contains KEYWORDS in its description.

You can also use dpkg -l PACKAGENAME to list all installed packages that match the pattern PACKAGENAME. You can use ? (one arbitrary character) and * (any number of arbitrary characters) as wildcards.

Then use sudo apt-get autoremove --purge PACKAGE to remove PACKAGE completely, including configuration and all no longer needed dependencies.

Example for PiTiVi:

• Find out the package name:

  $ apt-cache search PiTiVi
  pitivi - non-linear audio/video editor using GStreamer
  

• Purge the package and its dependencies:

  $ sudo apt-get autoremove --purge pitivi
  [...some output...]
  

Comments

[Byte Commander]

I think you mean` cinelerra` instead of cinerella?

[Emily Shan]

Well yeah probably

[David Foerster]

Related: What is taking up so much space on my disk, beside the filesystem?

[Emily Shan]

Ok thanks! And by the way do you know what happened to my minecraft? I can't do anything on servers I used to use java 7 now I switched to java 8 and a lot of things go wrong in singleplayer but in multiplayer things go better :/

[Emily Shan]

Oh ok, it's all right. And by the way, what is the difference between the up arrow and the check? I always forget it sorry. And thanks a lot for the commands they worked!{for me, since I'm horrible with computers, almost nothing works(Idk how to use them)}

[Emily Shan]

By the way, for cinelerra, how do I find out the package name? When I go to applications then sound and videos then it says Cinelerra-CV, when I put "apt-cache search cinelerra-cv" it says "cinelerra-cv - Non-linear audio/video authoring tool"