Bug 9304 new class wizard: incorrect terminology used
1. new class wizard 2. press Add.. in interfaces 3. the dialog you see has a title 'Extended Interfaces Selection' this is incorrect - it should be 'Implemented Interfaces Selection' (this bug was pointed out on the wsad newsgroup)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/TypePage.java
IType type= chooseSuperType();
			if (type != null) {
				fSuperClassDialogField.setText(JavaModelUtil.getFullyQualifiedName(type));
			}
		}
	}
	
	private void typePageCustomButtonPressed(DialogField field, int index) {		
		if (field == fSuperInterfacesDialogField) {
			chooseSuperInterfaces();
		}
	}
	
	/*
	 * A field on the type has changed. The fields' status and all dependend
	 * status are updated.
	 */
	private void typePageDialogFieldChanged(DialogField field) {
		String fieldName= null;
		if (field == fPackageDialogField) {
			fPackageStatus= packageChanged();
			updatePackageStatusLabel();
			fTypeNameStatus= typeNameChanged();
			fSuperClassStatus= superClassChanged();			
			fieldName= PACKAGE;
		} else if (field == fEnclosingTypeDialogField) {
			fEnclosingTypeStatus= enclosingTypeChanged();
			fTypeNameStatus= typeNameChanged();
			fSuperClassStatus= superClassChanged();				
			fieldName= ENCLOSING;