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Editorial Team
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Asked: 2026-06-02T03:40:06+00:00

JUnit does the same, and I just can’t figure out how… I guess thats

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JUnit does the same, and I just can’t figure out how…

Eclipse junit quick fix

I guess thats because of this entry in the Properties > Java Build Path > Libraries > Add Library wizard:

Eclipse junit add library

How can I do the same and include my library in this wizard from my plugin, i.e. make it available to a user in workspace?

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1 Answer

  1. Editorial Team

    OK, there are three different extension points you need to look at. The easiest way is to look at the JUnit plugin itself (there are four)

    org.eclipse.jdt.junit: git://dev.eclipse.org/org.eclipse.jdt/org.eclipse.jdt.junit.git
org.eclipse.jdt.junit.core: git://dev.eclipse.org/org.eclipse.jdt/org.eclipse.jdt.junit.core.git
org.eclipse.jdt.junit.runtime: git://dev.eclipse.org/org.eclipse.jdt/org.eclipse.jdt.junit.runtime.git
org.eclipse.jdt.junit4.runtime: git://dev.eclipse.org/org.eclipse.jdt/org.eclipse.jdt.junit4.runtime.git

    So, you can investigate the JUnit plugins, but these are the extension points you’ll need:

    For the Add Library, look at the extension point org.eclipse.jdt.ui.classpathContainerPage. From the JUnit plugin.xml:

    <extension point="org.eclipse.jdt.ui.classpathContainerPage">
  <classpathContainerPage
        name="%JUnitContainerName"
        class="org.eclipse.jdt.internal.junit.buildpath.JUnitContainerWizardPage"
        id="org.eclipse.jdt.junit.JUNIT_CONTAINER">
  </classpathContainerPage>
</extension>

    So this is implemented as JUnitContainerWizardPage. This extends IClasspathContainerPage and IClasspathContainerPageExtension.

    For the quickfix and classpathfix see the extension points org.eclipse.jdt.ui.quickFixProcessors and org.eclipse.jdt.ui.classpathFixProcessors. From the JUnit plugin.xml again:

    <extension point="org.eclipse.jdt.ui.quickFixProcessors">
  <quickFixProcessor
        name="%junitQuickFixProcessor"
        class="org.eclipse.jdt.internal.junit.ui.JUnitQuickFixProcessor"
        id="org.eclipse.jdt.junit.JUnitQuickFixProcessor">
  </quickFixProcessor>
</extension>

<extension point="org.eclipse.jdt.ui.classpathFixProcessors">
  <classpathFixProcessor
        name="%junitClasspathFixProcessor"
        class="org.eclipse.jdt.internal.junit.ui.JUnitClasspathFixProcessor"
        id="org.eclipse.jdt.junit.JUnitClasspathFixProcessor">
        <overrides id="org.eclipse.jdt.ui.text.correction.DefaultClasspathFixProcessor">
        </overrides>
  </classpathFixProcessor>
</extension>
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