Design and implement a class Queue
computer science
Description
Design and implement a class Queue that supports queues by extending SinglyLinkedList.java (i.e.
your queues are singlylinkedlists). Documentation for SinglyLinkedList.java is its code and
comments that are found in the code.
class Queue must support the following instance methods.
public Queue();
// creates a Q with capacity 8 (the default capacity)
public Queue(int capacity);
public Queue enqueue(Object elem) throws IllegalStateException;
// throw exception if Q is full (i.e. at capacity)
// return "this" to enable chaining
public Object dequeue() throws NoSuchElementException;
// throw exception if Q is empty
public Object front() throws NoSuchElementException;
// throw exception if Q is empty
public int getCapacity();
// return Q's capacity
public void setCapacity(int newcapacity) throws IllegalArgumentException;
// throw exception if capacity less than 0
// if newcapacity < capacity and size > newcapacity,
// then truncate Q to newcapacity
public int size();
// return number of elements in the Q
public boolean isEmpty();
// true if size is zero
public boolean isFull();
// true if size equals capacity
public String toString();
// return a string representation of the Q
The main() method of your program should contain code to test class Queue objects. This program
can use your Menu and MenuItem classes.
Queue Test Menu
===============
1) enqueue
2) dequeue
3) front
4) print
5) get size
6) get capacity
7) set capacity
8) is full?
12/14/2016 CSC205::Assignment::#Queue
9) is empty?
10) Exit
