[Java] Please test your code in the link I provide before you post your answer.

The output should be looked like exact same as the tester.

http://www.codecheck.it/files/170505025354kqve42h50h3ctq8mc3rjw3z

Thank you.

In this problem you will do a better implementation of the to do list. Write a class ToDoList that maintains a priority queue to manage the items to be done.

Write a class ToDoItem. ToDoItem has a description and a priority. The constructor takes these as parameters in that order.

ToDoItem implements Comparable interface and has these methods

get methods(accessors) for priority and description

equals method. Two items are equal if and only if they have both the same priority and description

compareTo method orders by priority. If priorities are equal, order by description.

toString returns a String representation of the ToDoItem in this format:

ToDoItem[description=see friends,priority=1] 

Write the class ToDoList. Its constructor initializes an empty PriorityQueue.

ToDoList has these methods

public void add(ToDoItem item) Adds an item for this ToDoList

public ToDoItem nextItem() removes and returns the next item to do. (The one with the priority closest to 1). Note that this also violates the rule about mutators not returning values

public boolean hasNext() returns true if there is at least one item left to do otherwise false

public ToDoItem peek() returns the next item to do but does not remove it from the list.

Use the following file:

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ToDoRunner.java

public class ToDoRunner { public static void main(String[] args) { ToDoList todo = new ToDoList(); todo.add(new ToDoItem("sleep", 12)); todo.add(new ToDoItem("study", 3)); todo.add(new ToDoItem("see friends", 1)); todo.add(new ToDoItem("eat", 5)); todo.add(new ToDoItem("watch a movie", 4)); todo.add(new ToDoItem("eat", 5)); todo.add(new ToDoItem("see a movie", 3)); System.out.println("hasNext: " + todo.hasNext()); System.out.println("peek when queue has an item: " + todo.peek()); //remove and print System.out.println("Remove all items and print:"); while(todo.hasNext()) { System.out.println(todo.nextItem()); } System.out.println("peek when queue is empty: " + todo.peek()); System.out.println("hasNext: " + todo.hasNext()); } } 

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