1. Design a Java interface called Priority that includes two methods: setPriorit

Question

1. Design a Java interface called Priority that includes two methods: setPriority and getPriority. The interface should define a way to establish numeric priority among a set of objects. Design and implement a class called Task that represents a task (such as on a todo list) that implements the Priority interface. Create a driver class to exercise some Task objects.

I've already finished 1 but now I need to do this,

2. Modify the Task class from the project in question 1 so that it also implements the Comparable interface from the Java standard class library. Implement the interface such that the tasks are ranked by priority. Create a driver class whose main method shows these new features of Task objects.

Explanation / Answer

import java.io.*;

interface Priority
{
   void setPriority(String ob, int pro);
   void getPriority();
}

class Task implements Priority, Comparable
{
   String obj;
   int p;
   public void getPriority()
   {
       System.out.println("Object name is " + this.obj);
       System.out.println("Object Priority is " + this.p);
   }

   public void setPriority(String oo, int pp)
   {
       this.obj=oo;
       this.p=pp;

   }

   public void compareTo(Object obj1)
   {

       if(this.p>obj1.p)
       {
           System.out.println(this.obj);
           System.out.println(obj1.obj);
       }
       else
       {
           System.out.println(obj1.obj);
           System.out.println(this.obj);
       }
  
   }

}

class driver
{
   public static void main(String args[])
   {
       Task tk = new Task();
       Task tk1 = new Task();

       tk.setPriority("Pen",2);  
       tk1.setPriority("Pencil",1);  

       tk.getPriority();  
       tk1.getPriority();  
      
       tk1.compareTo(tk2);
  
   }
}

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