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Home » Language IDEs » Java Development Tools (JDT) » Accessing a selected Java file in a multipage editor(What is the bet way to create an ICompilationUnit from IFile in a multipage editor)

Accessing a selected Java file in a multipage editor [message #529421]

Sun, 25 April 2010 03:42

Eclipse User

I have created a Multipage editor with the following plug-in dependencies:
org.eclipse.ui,
org.eclipse.core.runtime,
org.eclipse.jface.text,
org.eclipse.core.resources,
org.eclipse.ui.editors,
org.eclipse.ui.ide,
org.eclipse.jdt.core;bundle-version="3.5.2"

I am trying to access the compilationunit using the following snippet

...
...
IFile file = ((FileEditorInput)getEditorInput()).getFile();
JavaCore.createCompilationUnitFrom(file);
...
...

I get a java.lang.NoClassDefFoundError: org/eclipse/jdt/core/JavaCore when the plugin is executed.

Am I missing any dependencies? Has anyone faced similar issues before?

Re: Accessing a selected Java file in a multipage editor [message #529434 is a reply to message #529421]

Sun, 25 April 2010 08:11

Eclipse User

Update: When I renamed the plugin (changed the qualifier) everything works fine. If someone can de-mistify this for me, it would be really great! I am guessing, my renaming the plug-in somehow cleaned up the dependencies and added the required ones.

Re: Accessing a selected Java file in a multipage editor [message #529604 is a reply to message #529434]

Mon, 26 April 2010 09:33

Eclipse User

You mean when deployed? or in your workspace? Sometimes in the
workspace you need to use the context menu PDE Tools>Update Classpath
(this is a PDE problem, not a JDT problem).

PW

--
Paul Webster
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Re: Accessing a selected Java file in a multipage editor [message #529696 is a reply to message #529604]

Mon, 26 April 2010 15:35

Eclipse User

Does this mean the jar files get added when we do PDE Tools -> Update Classpath?

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