Bug 27075 ViewerSorter could maybe lazily initialize Collator
calling JavaElementSorter creates a lot of new objects (ViewerSorter calls Collator.getInstance() which is the culprit) so maybe fSorter could be initialized lazily
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/dialogfields/ListDialogField.java
public static class ColumnsDescription {
		private ColumnLayoutData[] columns;
		private String[] headers;
		private boolean drawLines;
		
		public ColumnsDescription(ColumnLayoutData[] columns, String[] headers, boolean drawLines) {
			this.columns= columns;
			this.headers= headers;
			this.drawLines= drawLines;
		}
		
		public ColumnsDescription(String[] headers, boolean drawLines) {
			this(createColumnWeightData(headers.length), headers, drawLines);
		}
		
		public ColumnsDescription(int nColumns, boolean drawLines) {
			this(createColumnWeightData(nColumns), null, drawLines);
		}