text: import java.util.HashMap;
  // This library helps to find completion status of the books //
  class Library{
  public Library() {
  }
  public void getFinishedBooks(HashMap<String, Boolean> library) {
  if (library.size() < 1) { System.out.println("The HashMap is empty."); } else { for (String book: library.keySet()) { if (library.get(book) == true) { System.out.println(book); } } }
  }
  public static void main (String args) {
  HashMap<String, Boolean> myBooks = new
  HashMap<String,Boolean>();
  myBooks.put("Road Down The Funnel", true); myBooks.put("Rat: A Biology",false); myBooks.put("TimeIn",true); myBooks.put("3D Food Printing", false); Library myLibrary = new Library(); myLibrary.getFinishedBooks(myBooks);
  }
  }
  So now my code works but I wonder this: Why the result return to the book " TimeIn" first then second is the book “Road Down The Funnel”. although the book “Road Down The Funnel” was called first on the code.
  The same thing happen when I set the condition: if (library.get(book) == false)
  The book “3D FootPrinting” appeared first on the box and then on the second line is the book “Rat: A Biology” although the book “Rat: A Biology” was called before 3D FootPrinting.