Bug 62938 quick fix list should pre-select what's already filled in [quick fix]
Maybe this is a feature request, but I've been having this problem for months and just now figured out what was causing it (I thought it was keystroke glitches on my part). When I select "add throws declaration" from quick fix, usually the desired exception is filled in (in linked edit mode), and I'm given a list to choose from if I want to change it. My inclination is to just hit "enter" signifing "accept", but the list actually has "Exception" selected (instead of IOException, in my typical case) so the value I wanted is changed and another used instead. To "work around" I have to change the selection, or hit "ESC", which seems unnatural to me.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/LinkedCorrectionProposal.java
public IContextInformation getContextInformation() { return null; }
		public void selected(ITextViewer viewer, boolean smartToggle) {}
		public void unselected(ITextViewer viewer) {}
		
		/*
		 * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#validate(org.eclipse.jface.text.IDocument, int, org.eclipse.jface.text.DocumentEvent)
		 */
		public boolean validate(IDocument document, int offset, DocumentEvent event) {
			
			String insert= getDisplayString();
			if (insert == null)
				return false;
			
			int start= offset - insert.length();
			if (start >= 0 && offset <= document.getLength()) {
				try {
					String content= document.get(start, offset - start);
						if (insert.startsWith(content))
							return true;
				} catch (BadLocationException e) {
					JavaPlugin.log(e);
					
				}
			}
			return false;
		}
	}
	
}