Bug 42143 Dialogs for source actions do not use dialog font [dialogs]
select a cu in package explorer context menu "Source": "Override/Implement methods..." "Generate Getters and Setters..." "Generate Delegate methods..." "Add constructor from superclass..." "Generate constructor using fields..."
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/GenerateNewConstructorUsingFieldsAction.java
String superParamTypes[]= chosenSuper.getParameterTypes();
				for (int i= 0; i < superParamTypes.length; i++) {
					buffer.append(superParamTypes[i]);
				}
				
				for (int i= 0; i < selection.length; i++) {
					if (selection[i] instanceof IField) {
						buffer.append(((IField) selection[i]).getTypeSignature());
					}
				}
			} catch (JavaModelException e) {
			}
			buffer.append(")V"); 
			if (fExistingSigs.contains(buffer.toString())) {
				return new StatusInfo(IStatus.WARNING, ActionMessages.getString("GenerateConstructorUsingFieldsAction.error.duplicate_constructor")); 							
			}
			int fieldCount= countSelectedFields(selection);
				String message= ActionMessages.getFormattedString("GenerateConstructorUsingFieldsAction.fields_selected", 
	new Object[] { String.valueOf(fieldCount), String.valueOf(fEntries)});
			return new StatusInfo(IStatus.INFO, message);
		}
		private int countSelectedFields(Object[] selection) {
			int count= 0;
			for (int i= 0; i < selection.length; i++) {
				if (selection[i] instanceof IField)
					count++;
			}
			return count;
		}
		private List getExistingConstructorSignatures() {