NPE on getEnclosingMethod()

[Dennis Gesker]

Claes and David:

Thank you both. Much appreciated!

Dennis

On Mon, Dec 16, 2019 at 5:22 PM David Holmes <david.holmes at oracle.com>
wrote:

> Hi Dennis,
>
> On 17/12/2019 9:12 am, Dennis Gesker wrote:
> > Hello OpenJDK list...
> >
> > I do hope this is the correct list for user questions.
>
> OpenJDK lists are for OpenJDK developers not end-users.
>
> > I'm getting a NULL when calling:
> >
> > this.getClass().getEnclosingMethod()
>
> As you would if not called from a nested type defined within a method.
>
> assertTrue(this.getClass().getEnclosingMethod() == null);
> assertTrue(this.getClass().getEnclosingMethod().getName() == null);
>
> If you pass the first assert you're guaranteed to get a NPE when calling
> getName() on the second.
>
> Cheers,
> David
> -----
>
> > I was going to file a bug but I'm not yet a contributor and hope to get
> > login credentials soon. Any chance an existing member could take a look
> at
> > my unit test below? And, if verified and not duplicate file a bug report
> on
> > my behalf?
> >
> > Thanks,
> > Dennis
> >
> > Using:
> >
> > openjdk version "11.0.5-ea" 2019-10-15
> > OpenJDK Runtime Environment (build 11.0.5-ea+10-post-Ubuntu-0ubuntu1)
> > OpenJDK 64-Bit Server VM (build 11.0.5-ea+10-post-Ubuntu-0ubuntu1, mixed
> > mode, sharing)
> >
> > The following test compiles (-Xlint:all -Werror) but throws and NPE on
> > execution:
> >
> > package test;
> >
> > import static org.junit.Assert.assertTrue;
> > import java.util.logging.Level;
> > import java.util.logging.Logger;
> > import org.junit.jupiter.api.Test;
> >
> > public class CheckForNullEnclosingMethod {
> > private Logger logger =
> Logger.getLogger(this.getClass().getSimpleName());
> >
> > @Test
> > public void iSeemToBeLost() {
> >
> > if (this.getClass().getEnclosingMethod() == null) {
> > logger.logp(Level.SEVERE, this.getClass().getName(),
> > this.getClass().getEnclosingMethod().getName(),
> > "What method am I in?");
> > assertTrue(this.getClass().getEnclosingMethod() == null);
> > assertTrue(this.getClass().getEnclosingMethod().getName() == null);
> > return;
> > }
> >
> > logger.logp(Level.INFO, this.getClass().getName(),
> > this.getClass().getEnclosingMethod().getName(),
> > "No worries, I'm not lost");
> > assertTrue(this.getClass().getEnclosingMethod() != null);
> > assertTrue(this.getClass().getEnclosingMethod().getName() != null);
> >
> > }
> > }
> >
>


-- 

Dennis R. Gesker
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