Bug 66234 [projection] Revert file sometimes does not display the imports
I was able to recreate the scenario, I have a Java file in a Java project as /* * Created on Jun 8, 2004 * * TODO To change the template for this generated file go to * Window - Preferences - Java - Code Style - Code Templates */ package com; import java.net.URL; import java.util.Date; /** * @author admin * * TODO To change the template for this generated type comment go to * Window - Preferences - Java - Code Style - Code Templates */ public class Test { Date xyz; URL abc; } I open it in the editor, delete the keyword 'package' so that that line only says com. Now I right click on file and select 'Revert File'. Notice that the imports list disappears. This is in M9.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/folding/DefaultJavaFoldingStructureProvider.java
private Map computeAdditions(IParent parent) {
		Map map= new HashMap();
		try {
			computeAdditions(parent.getChildren(), map);
		} catch (JavaModelException x) {
		}
		return map;
	}
	private void computeAdditions(IJavaElement[] elements, Map map) throws JavaModelException {
		for (int i= 0; i < elements.length; i++) {
			IJavaElement element= elements[i];
			
			computeAdditions(element, map);
			
			if (element instanceof IParent) {
				IParent parent= (IParent) element;
				computeAdditions(parent.getChildren(), map);
			}
		}
	}
	private void computeAdditions(IJavaElement element, Map map) {
		
		boolean createProjection= false;
		
		boolean collapse= false;
		switch (element.getElementType()) {
			
			case IJavaElement.IMPORT_CONTAINER:
				collapse= fAllowCollapsing && fCollapseImportContainer;
				createProjection= true;