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Editorial Team
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Asked: 2026-06-09T04:34:24+00:00

I have recently switched from Eclipse Indigo to Eclipse Juno. My thinking was I

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I have recently switched from Eclipse Indigo to Eclipse Juno. My thinking was I could just point it at the same workspace I was working with in Indigo. This did work to bring in my project (which is disbursed across several packages), however I now get 176 errors, mainly these two:

The project cannot be built until build path errors are resolved

Unbound classpath variable:'M2_REPO/com/some_path/some.jar' in project 'my_project'

Any ideas as to how I can resolve this? Id really prefer to use Juno.

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  1. Editorial Team

    What is the M2_REPO Variable ?

    Excerpt from here :

    M2_REPO is a variable that defines where maven repository is on your disk

    Check Maven Settings

    I recommend that you check whether your Maven installation is setup properly.
    Did you use to have the m2e plugin in the old eclipse ? If so, might be worth checking whether there is the same in Juno. Do you see a ‘Maven’ option in preferences ? If so, check the following Preferences -> Maven -> Installations :

    Maven

    If that plugin is present and setup properly you should already have an M2_REPO variable. If not, try adding the current maven installation you have.

    Adding M2_REPO Manually

    If the maven settings are all ok, you can add the M2_REPO classpath variable manually as follows.

    Goto Preferences -> Java -> Build Path -> Classpath Variables and add a New Entry by clicking on New and then enter the following details :

    Name = M2_REPO 
Path = C:\Users\jindala\.m2\repository

    Once you do that your Classpath Variables dialogue should look like this :

    Add workspace variable

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