The java.util.Iterator interface definesa forward iterator. The Java API also provides the java.util.ListIteratorinterface that defines a bidirectional iterator. Study ListIterator and definea bidirectional iterator for the BST class.

A binary operator is an operation that is performed on two operands. For example, addition is a binary operator that adds two operands (e.g., 2 + 4). In the provided UML diagram, all binary operators have two operands and an execute method that performs the appropriate operation on the operands. The AddOperation class should add the two operands. The SubtractOperation class should subtract the two operands. Here is an example of how a binary operator could be used: IBinaryOperator operator = new AddOperator(8, 12);System.out.println(operator.execute()); // should print 20operator.setLeftOperand(18);System.out.println(operation.execute()); // should print 30 crate a Main.java to test your code

We define the distinction between "static" and "dynamic" binding (i.e., between virtual and nonvirtual methods).

Assume class LinkedQueue has been deńned using the implementation in your textbook that myQueue has been initialized so it is empty. Type the EXACT output of the following code segment. You may assume that the code compiles and executes without errors. LinkedQueue myQueue; int i - 1; int j = 2; int k = 3; int n = 4; myQueue.enqueue (n); myQueue.enqueue (); i = myQueue.peekFront (); myQueue.dequeue (); myQueue.enqueue (k); n = myQueue.peekFront (); myQueue.dequeue (); myQueue.enqueue (); myQueue.enqueue (n); while (ImyQueue.isEmpty ()) { i = myQueue.peekFront (); myQueue.dequeue (); cout << i<< " ": cout << endl;

Java required         a) Update the Register class so that it implements the Iterable interface and defines an appropriate iterator method.

// IMPORT LIBRARY PACKAGES NEEDED BY YOUR PROGRAMimport java.util.List;// SOME CLASSES WITHIN A PACKAGE MAY BE RESTRICTED// DEFINE ANY CLASS AND METHOD NEEDED// CLASS BEGINS, THIS CLASS IS REQUIREDclass Solution{ // METHOD SIGNATURE BEGINS, THIS METHOD IS REQUIREDint itemPairs(int num, List<Integer> itemValues, int target) {// WRITE YOUR CODE HERE}// METHOD SIGNATURE ENDS}

Implement a Java application that connects to the database. The application employs a the following class inheritance hierarchy: С. Person; BrotherInLaw is_a Person; Class Person: Class Persons is the hierarchy's superclass and inherits the Java class Object. A Person's object is defined by the attributes of the Persons entity set in family E-R diagram. The class includes appropriate constructors and methods, including methods that perform the following operations: setPerson – inserts a person in the database; b. а. getXPerson – returns the X attribute of a person; and toString overrides the method toString in Object. с. returns the Person's object description as a String. The method Class BrotherInLaw: Class Persons BrotherInLaw inherits class Person, includes appropriate constructors and methods, including methods that perform the following operations: - executes the queries and return a list of the persons who are the executeQuery brothers-in-law of a given person; and b. а. print –…

Java

In C++ Create a new project named lab8_1. You will be implementing two classes: A Book class, and a Bookshelf class. The Bookshelf has a Book object (actually 3 of them). You will be able to choose what Book to place in each Bookshelf.  Here are their UML diagrams  Book class UML Book - author  : string- title   : string- id      : int- count   : static int + Book()+ Book(string, string)+ setAuthor(string) : void+ setTitle(string) : void+ print() : void+ setID() : void And the Bookshelf class UML Bookshelf - book1 : Book- book2 : Book- book3 : Book + Bookshelf()+ Bookshelf(Book, Book, Book)+ setBook1(Book) : void+ setBook2(Book) : void+ setBook3(Book) : void+ print() : void Some additional information: The Book class also has two constructors, which again offer the option of declaring a Book object with an author and title, or using the default constructor to set the author and title later, via the setters . The Book class will have a static member variable…

JAVA programming language