quiz.java

String book = "This represents contents of the book.";
final Function<String, IntSupplier> wordCounter = aString ->
    () -> aString.split("\\s+").length;
final IntSupplier curry = wordCounter.apply(book);

int countBeforeChange = curry.getAsInt();
book = "Book contents has been changed as of now.";
int countAfterChange = curry.getAsInt();

System.out.print(
    countBeforeChange == countAfterChange ? 1 : 0
);