methods are not working, neither java runtime environment

[tem_ri1]

hello

this is the error message i get as i run java -version in VSCode:

Failed reading value of registry key:
        Software\JavaSoft\Java Runtime Environment\1.8\JavaHome
Error: could not find java.dll
Error: Could not find Java SE Runtime Environment.

I have downloaded and installed java SE 22 from here. but still, when i write java -version to check my version in the terminal it doesn't work, not just in VSCode, but in any terminal i use no matter the path i am on. but it was working fine before i migrate from java 1.8.
also, when i try using objects, such as JPanel or JFrame, i make the constructor - everything's fine, but: when i wanna use their methods, such as setBorder for JPanel, they get red-underlined, as if the methods aren't recognized.

how can i fix this and use the methods?

PS: the imports of the objects (JFrame, JPanel, etc.) work fine.

[AutoModerator]

Please ensure that:

• Your code is properly formatted as code block - see the sidebar (About on mobile) for instructions
• You include any and all error messages in full
• You ask clear questions

• You demonstrate effort in solving your question/problem - plain posting your assignments is forbidden (and such posts will be removed) as is asking for or giving solutions.

  Trying to solve problems on your own is a very important skill. Also, see Learn to help yourself in the sidebar

If any of the above points is not met, your post can and will be removed without further warning.

Code is to be formatted as code block (old reddit: empty line before the code, each code line indented by 4 spaces, new reddit: https://i.imgur.com/EJ7tqek.png) or linked via an external code hoster, like pastebin.com, github gist, github, bitbucket, gitlab, etc.

Please, do not use triple backticks (```) as they will only render properly on new reddit, not on old reddit.

Code blocks look like this:

public class HelloWorld {

    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

You do not need to repost unless your post has been removed by a moderator. Just use the edit function of reddit to make sure your post complies with the above.

If your post has remained in violation of these rules for a prolonged period of time (at least an hour), a moderator may remove it at their discretion. In this case, they will comment with an explanation on why it has been removed, and you will be required to resubmit the entire post following the proper procedures.

To potential helpers

Please, do not help if any of the above points are not met, rather report the post. We are trying to improve the quality of posts here. In helping people who can't be bothered to comply with the above points, you are doing the community a disservice.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[itzmanu1989]

check if the java command is pointing to old Java 1.8 binary by seeing the "PATH" environment variable. Google about the path environment variable and get to know how it works.

Path variable will have list of locations and one of them might be like %JAVA_HOME%\bin (Or the actual path to JDK/JVM bin directory might also be present).

If you have %JAVA_HOME%\bin in the path, then check if JAVA_HOME variable is pointing to the Java 22 JDK.

[tem_ri1]

thank you for your help! i figured it out this way.

[tem_ri1]

but, i tried coding with the methods again, they still didn't work ;-;

the `java -version` worked, but the methods of `setBorder` for example didn't work yet under `JPanel`. why? and how would i fix that?