问题
I am doing a CIMTool project, for a handle of WorkbenchWindow
Code Snippet
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
//(both these Classes are present in Libraries)
IWorkbenchWindow window=PlatformUI.getWorkbench().getActiveWorkbenchWindow();
Issues
Following Error is slapped
Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/e4/ui/model/application/ui/MUIElement at org.eclipse.ui.PlatformUI.getWorkbench(PlatformUI.java:90)
Environment
Eclipse : Eclipse Java EE IDE for Web Developers, Version: Juno Service Release 2 OS : MS Windows 7 Professional, X86 Java Version : java version "1.7.0_25"
Questions
- I tried searching for org/eclipse/e4/ui/model/*, I could not find in Archives. Where I can find ?
- Is there any otherway to get IWorkbenchWindow Instance ? (want to avoid this issue)
This problem I found that, doesnt appear in Java Indigo. But my project has to be developed in Eclipse , so I cant migrate.
thanks
回答1:
I also was confronted with this error when executing code from within a project that was created as "SWT/JFace Java Project" using Eclipse Kepler (displaying a ListSelectionDialog).
The main problem is that the project set-up misses a JAR file that contains the MUIElement class. You can easily fix the project set-up by editing the build-path, adding the external jar which has a name similar to this one:
org.eclipse.e4.ui.model.workbench_1.0.1.v20131118-1956.jar.
You find that jar in the plugins directory of your Eclipse installation.
来源：https://stackoverflow.com/questions/24314433/org-eclipse-e4-ui-model-application-ui-muielement-class-not-found-java-eclipse