Question

CIS 1068 Assignment 8 Warm Up with Objects Due: Wednesday, March 25 70 points (+ up to 15 extra credit) The purpose of this assignment is to give you practice implementing your own classes. It also provides extra practice with arrays. Task Implement a class Task, which is used to represent a job that should be done. It should contain the following private fields: .name text description of what job should be done (e.g., take out the trash, finish 1068 homework). • priority, a non-negative integer which stores the importance of a Task • estMins To Complete, a non-negative integer which holds the anticipated number of minutes it should take to complete the task • extra credit: whenDue a java.time. LocalDateTime object representing the date and time when the task should be completed Implement at least the following public methods within the Task class: • a constructor, which initializes each of the fields • accessor methods for each of the fields. Use the naming convention getxxx( ) where xxx is the name of the field, e.g., you'll write a method called getName() which returns the name of the Task. mutator methods for each of the fields except for priority. Use the naming convention setxxx() where xxx is the name of the field, e.g., you'll write a method called setName(String newName), which would update the name field of the Task to newName. .toString(), which returns a String representation of the Task. increasePriority(int amount) increases the priority level by amount. If a negative amount is specified, the method returns without making any changes. • decreasePriority(int amount) decreases the priority level by amount. If the decrease is more than the current value of priority (and subtracting this amount would result in a negative priority), priority should be set to 0. • extra credit: overdue () returns true if the current date/time is later than whenDue or false otherwise. For example, we should be able to do something like the following: // creates a new Task object to remind you // to finish your 1068 homework. It has priority 3 // and I anticipate that it's going to take 120 minutes Task doMyHW = new Task ("finish 1068 homework", 3, 120); // if we're doing extra credit, we might instead write: Task postHW = new Task("post 1068 homework", 1, LocalDateTime.of(2019, 3, 23, 13, 0), 180); // which would be to remind me to post the 1068 homework assignment. // This has priority 1, should take me 180 minutes // and it's due March 23, 2019 at 1 PM (i.e., 13:00) Write a very short driver program (a separate class containing a main()) to test your code to make sure it's working. You are not required to write JUnit tests. HoneyDoList Implement a class HoneyDoList, which is used to manage a collection of Task. It should contain the following private fields: • tasks[] an array of Task • numTasks, a non-negative integer storing the number of items contained in tasks[]. • INITIAL_CAPACITY, a constant non-negative integer. This is how large the task array should be at creation time. Implement at least the following public methods within the HoneyDo class: • a constructor, which creates the tasks | array, giving it the capacity of INITIAL_CAPACITY, and setting numTasks to 0. • toString(), which returns a String representation of each Task in tasks[]. Do not include in the String null for entries in

Please Implement this code using Java Eclipse.

Answer 1

Task.java

import java.time.LocalDateTime;

public class Task{
   private String name;
   private int priority;
   private int estMinsToComplete;
   private LocalDateTime whenDue;
  
   public Task(String name,int prio,LocalDateTime due,int est) {
       this.name=name;
       this.priority=prio;
       this.estMinsToComplete=est;
       this.whenDue=due;
   }
   public Task(String name,int prio,LocalDateTime due) {
       this.name=name;
       this.priority=prio;
       this.whenDue=due;
   }

   public String getName() {
       return name;
   }

   public void setName(String name) {
       this.name = name;
   }

   public int getPriority() {
       return priority;
   }

   public void setPriority(int priority) {
       this.priority = priority;
   }

   public int getEstMinsToComplete() {
       return estMinsToComplete;
   }

   public void setEstMinsToComplete(int estMinsToComplete) {
       this.estMinsToComplete = estMinsToComplete;
   }

   public LocalDateTime getWhenDue() {
       return whenDue;
   }

   public void setWhenDue(LocalDateTime whenDue) {
       this.whenDue = whenDue;
   }
  
   public String toString() {
       return "name "+name+" priority "+priority+" estMinstoComplete "+estMinsToComplete+" when due "+whenDue;
   }
  
   public void increasePriority(int amount) {
       if(amount>0)
           this.priority+=amount;
   }
   public void decreasePriority(int amount) {
       if(amount>=this.priority)
           this.priority=0;
       else
           this.priority-=amount;
   }
   public boolean overdue() {
       if(LocalDateTime.now().compareTo(this.whenDue)>0) {
           return true;
       }
       return false;
   }
  
  
}

//////////////////////////////////////////////////

HoneyDoList.java

public class HoneyDoList{
   private Task tasks[];
   private int numTasks;
   private int INITIAL_CAPACITY;
  
   public HoneyDoList() {
       tasks=new Task[INITIAL_CAPACITY];
       numTasks=0;
   }
   public String toString() {
       String s="";
       for(int i=0;i<numTasks;i++) {
           if(tasks[i]!=null) {
               s+=tasks[i].toString()+"\n";
           }
       }
       return s;
   }
   public int find(String name) {
       int i=0;
       for(i=0;i<numTasks;i++) {
           if(tasks[i].getName().equalsIgnoreCase(name))
               return i;
       }
       return -1;
   }
   public void addTask(Task task) {
       //Task t=new Task("new task",10,LocalDateTime.now(),120);
       if(tasks.length==numTasks) {
           Task tt[]=new Task[tasks.length+1];
           int i=0;
           for(i=0;i<tasks.length;i++)
           {
               tt[i]=tasks[i];
           }
           tt[i]=task;
           numTasks++;
           tasks=tt;
       }
       else {
           tasks[numTasks]=task;
           numTasks++;
       }
   }
   public int totalTime() {
       int total=0;
       for(int i=0;i<numTasks;i++) {
           total+=tasks[i].getEstMinsToComplete();
       }
       return total;
   }
   public int shortestTime() {
       int min=999;
       if(numTasks==0)
           return -1;
       for(int i=0;i<numTasks;i++) {
           if(tasks[i].getEstMinsToComplete()>min)
               min=tasks[i].getEstMinsToComplete();
       }
       return min;
   }
   public Task completeTask(int index) {
       if(index<0||index>=numTasks)
           return null;
       Task t=tasks[index];
       for(int i=index;i<numTasks-1;i++) {
           tasks[i]=tasks[i+1];
       }
       numTasks--;
       return t;
   }
   public Task[] overdueTasks() {
       Task t[]=new Task[tasks.length];
       int j=0;
       for(int i=0;i<numTasks;i++) {
           if(tasks[i].overdue()==true)
               t[j++]=tasks[i];
       }
       return t;
   }
}

//////////////////////////////////////////

TaskMain.java

public class TaskMain{
   public static void main(String args[]) {
       Task t=new Task("finish work",3,LocalDateTime.now(),180);
       System.out.println(t.toString());
      

   }
}

///////////////////////////////////////////

HoneyDoListMain.java

public class HoneyDoListMain{
   public static void main(String args[]) {
  
       HoneyDoList honeydo=new HoneyDoList();
       System.out.println(honeydo);
      
       honeydo.addTask(new Task("take aspirin",1,LocalDateTime.of(2019,3,23,13,0)));
       System.out.println(honeydo);
      
       System.out.println(honeydo.shortestTime());
   }
}

<terminated Test (Java Application) C:\Program FilesVava\jdk1.8.0_211\bin\javaw.exe (Mar 25, 2020, 4:36:27 PM) name finish work priority 3 estMinstoComplete 180 when due 2020-03-25T16:36:29.019 name take aspirin priority 1 estMinstoComplete when due 2019-03-23T13:00 999

<terminated Test (Java Application) C:\Program FilesVava\jdk1.8.0_211\bin\javaw.exe (Mar 25, 2020, 4:36:27 PM) name finish work priority 3 estMinstoComplete 180 when due 2020-03-25T16:36:29.019 name take aspirin priority 1 estMinstoComplete when due 2019-03-23T13:00 999