Bug 35265 NPE in classpath variables page
Build: I-20030317 I was switching back and forth between target platform and classpath variables preference pages, changing values on target platform page and seeing if changes are reflected on classpath variables page. At some point, I got the following null pointer: java.lang.NullPointerException at org.eclipse.jdt.internal.ui.wizards.buildpaths.CPVariableElementLabelProvider.ge tImage(CPVariableElementLabelProvider.java:55) at org.eclipse.jface.viewers.TableViewer.doUpdateItem(TableViewer.java:202) at org.eclipse.jface.viewers.StructuredViewer$UpdateItemSafeRunnable.run (StructuredViewer.java:119) at org.eclipse.core.internal.runtime.InternalPlatform.run (InternalPlatform.java:867) at org.eclipse.core.runtime.Platform.run(Platform.java:413) at org.eclipse.jface.viewers.StructuredViewer.updateItem (StructuredViewer.java:1271) at org.eclipse.jface.viewers.TableViewer.internalRefresh(TableViewer.java:454) at org.eclipse.jface.viewers.TableViewer.internalRefresh(TableViewer.java:431) at org.eclipse.jface.viewers.StructuredViewer$7.run(StructuredViewer.java:861) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection (StructuredViewer.java:801) at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:859) at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:821) at org.eclipse.jdt.internal.ui.wizards.dialogfields.ListDialogField.refresh (ListDialogField.java:739) at org.eclipse.jdt.internal.ui.wizards.buildpaths.VariableBlock.refresh (VariableBlock.java:406) at org.eclipse.jdt.internal.ui.preferences.ClasspathVariablesPreferencePage.setVisi ble(ClasspathVariablesPreferencePage.java:80) at org.eclipse.jface.preference.PreferenceDialog.showPage (PreferenceDialog.java:1064) at org.eclipse.jface.preference.PreferenceDialog$9.run (PreferenceDialog.java:496)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/VariableBlock.java
}
		
		/*
	 	 * @see IRunnableWithProgress#run(IProgressMonitor)
		 */
		public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
			monitor.beginTask(NewWizardMessages.getString("VariableBlock.operation_desc"), fDoBuild ? 2 : 1); 
			try {
				int nVariables= fToChange.size() + fToRemove.size();
				
				String[] names= new String[nVariables];
				IPath[] paths= new IPath[nVariables];
				int k= 0;
				
				for (int i= 0; i < fToChange.size(); i++) {
					CPVariableElement curr= (CPVariableElement) fToChange.get(i);
					names[k]= curr.getName();
					paths[k]= curr.getPath();
					k++;
				}
				for (int i= 0; i < fToRemove.size(); i++) {
					names[k]= (String) fToRemove.get(i);
					paths[k]= null;
					k++;					
				}
				JavaCore.setClasspathVariables(names, paths, new SubProgressMonitor(monitor, 1));
				
				if (fDoBuild) {
					JavaPlugin.getWorkspace().build(IncrementalProjectBuilder.FULL_BUILD, new SubProgressMonitor(monitor, 1));
				}