Eclipse IDE cannot resolve to a type. All values. | Java Community | Help. Code. Learn. | Page 1

scarlet fjord Dec 13, 2023, 10:56 PM

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My IDE is showing errors all over my screen. Mainly, all the methods are showing errors that say 'cannot be resolved to a type.'. I know this has something to do with the build path, but I can't seem to fix it. Any help?

latent jettyBOT Dec 13, 2023, 10:56 PM

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Hey @scarlet fjord! Please use /close or the Close Post button above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically closed after 300 minutes of inactivity.

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scarlet fjord Dec 13, 2023, 10:58 PM

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Oh, and all the code was imported from a gitlab repository, and I cannot run any of it because of this error.

limber brook Dec 13, 2023, 11:06 PM

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Can you check the build path?

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Right click on the project and select Build Path>Configure Build path

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specifically the Libraries tab - what's in there?

scarlet fjord Dec 13, 2023, 11:10 PM

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@limber brook This is what's in there.

limber brook Dec 13, 2023, 11:11 PM

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Did you install a JDK on your computer?

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If so, Eclipse doesn't know about it (or it only finds JDKs <17)

scarlet fjord Dec 13, 2023, 11:12 PM

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I have JDK 21.0.1 installed.

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A previous version of Eclipse works without issues, but this is the 2022-12 version and I just started working on it.

limber brook Dec 13, 2023, 11:13 PM

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ok select JRE System library

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then select Edit on the right

scarlet fjord Dec 13, 2023, 11:14 PM

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Then?

limber brook Dec 13, 2023, 11:14 PM

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what's shown?

scarlet fjord Dec 13, 2023, 11:14 PM

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limber brook Dec 13, 2023, 11:15 PM

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scarlet fjord

select Installed JREs

scarlet fjord Dec 13, 2023, 11:15 PM

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limber brook Dec 13, 2023, 11:16 PM

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ok you have it there

limber brook Dec 13, 2023, 11:16 PM

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scarlet fjord

then you can apply and close that

limber brook Dec 13, 2023, 11:16 PM

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scarlet fjord

and select that JDK under Alternate JRE

scarlet fjord Dec 13, 2023, 11:16 PM

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Like this?

limber brook Dec 13, 2023, 11:16 PM

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yes

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apply and close the whole thing

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including the build path modal

scarlet fjord Dec 13, 2023, 11:17 PM

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All of the errors are gone now.

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Thanks for that, now I have the other problem mentioned at the top.

latent jettyBOT Dec 13, 2023, 11:17 PM

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scarlet fjord Thanks for that, now I have the other problem mentioned at the top.

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limber brook Dec 13, 2023, 11:18 PM

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ok so do you have a main class?

scarlet fjord Dec 13, 2023, 11:18 PM

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Yes I do. Do I launch it from there?

limber brook Dec 13, 2023, 11:18 PM

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right-click the main class

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and select Run As>Java application

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that should run the main class specifically

scarlet fjord Dec 13, 2023, 11:19 PM

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Oh alright

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I believe that's all, thanks again!

#Eclipse IDE cannot resolve to a type. All values.