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Java Java Annotations Using Java's Built-In Annotations The @SuppressWarnings Annotation - "fallthrough"

Posted by Unsubscribed User
Unsubscribed User
48,988 Points

using intellij for this, but supress warning not working ?

Hello there i use Intellij to reproduce this lesson, suppress warnings annotation does not work. Dang, what to do ?

Exception in thread "main" java.lang.NullPointerException at com.teamtreehouse.suppresswarnings.Main.main(Main.java:12) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)

Steve Hunter
Steve Hunter
57,712 Points

Hi Jens,

Can you post your code, please? That might help track down the issue.

Thanks,

Steve.

3 Answers

Damian Adams
Damian Adams
21,351 Points
Damian Adams
Damian Adams
21,351 Points

You're getting a checked exception from the compiler, not a warning. I'm sure you must have figured it out by now, but it looks like you were attempting to use a method on a null reference instance or something (NullPointerException). Besides that I'd recommend using the command line (Windows Powershell is fairly good if you're on Win 10, and the Terminal is quite nice on OS X) to follow along this course, so you can get "closer to the metal" as they say.

Unsubscribed User
Unsubscribed User
48,988 Points

yes moved already, thanks.

Unsubscribed User
Unsubscribed User
48,988 Points
Unsubscribed User
Unsubscribed User
48,988 Points

Hello Steve i already moved to the next part. Hope treehouse will make sure their examples work across ide's not only workspaces, which nobody uses finally on production.

ricky bobby
ricky bobby
1,034 Points

that will never happen unless treehouse wins the lottery. Ides are rapidly developed by the time a video is released the ide will have changed one way or another. I think Intellij runs a few custom preprocessers (Although I have no idea how the back ends works) basically what that means is It can handle things like annotations, var names, imports ahead of main compilation and make a decision weather or not your project specifications allows things like @SuppressWarnings. It sounds like you don't have any experience with Linux or cmdline in general. You really should learn about Linux and bash scripting it is one of the most powerful tools you will ever learn (and you have a head start using workspaces because a workspace console is just a bash prompt running on a vm).

Kareem Jeiroudi
Kareem Jeiroudi
14,984 Points
Kareem Jeiroudi
Kareem Jeiroudi
14,984 Points

So, @Unsubscribed User, have you solved the issue or just moved to working in the Workspace or Terminal? I know, it could work this way, but I'm trying to understand why the IDE's throwing such an exception. In case you came up with any solution, you're very welcome to share them here at this post.