Question

The language is java

Write a class called Tablet that stores information about a tablet's age, capacity (in GB), and current usage (in GB). You should not need to store any more information

Write actuators and mutators for all instance data

Write a toString method

When you print a tablet, the info should be presented as such:

This tablet is X years old with a capacity of Y gb and has Z gb used. There is A gb free on the tablet, which means it is B % full

Write a driver class called MyTablets that creates these Tablets and store them in an ArrayList

2 years old, 512gb capacity, 200gb used

5 years old, 256gb capacity, 18gb used

2 months old, 512gb capacity, 308.5gb used

Print the 3 tablets using a loop.

Delete everything from the 2 year old tablet's hard drive

Up the capacity on the 2 month old tablet to 1 tb

Add 25gb of usage to the 5 year old tablet

Print the 3 tablets using a loop.

Delete the 5 year old tablet from the ArrayList

Add another tablet to the ArrayList that is 10 years old, has 128gb of storage and has 127gb of storage used

Print the 3 tablets

Print the total storage capacity of the 3 tablets combined, as well as the total free space.

Answer 1

Given below is the code for the question. Please do rate the answer if it helped. Thank you.

Tablet.java
----
public class Tablet
{
   private double age;
   private double capacity;
   private double used;
  
   public Tablet()
   {
      
   }
  
   public Tablet(double age, double capacity, double used) {
       this.age = age;
       this.capacity = capacity;
       this.used = used;
   }
  
   public double getAge() {
       return age;
   }

   public void setAge(int age) {
       this.age = age;
   }

   public double getCapacity() {
       return capacity;
   }

   public void setCapacity(double capacity) {
       this.capacity = capacity;
   }

   public double getUsed() {
       return used;
   }

   public void setUsed(double used) {
       this.used = used;
   }

   public String toString(){
       double free = capacity - used;
       double percent = used * 100 / capacity;
       String ageStr;
       if(age < 1)
           ageStr = (int)(age * 12) + " months";
       else
           ageStr = String.format("%.1f years", age);
      
       return String.format("This tablet is %s old with a capacity of %.1f gb and has %.1f gb used." +
       " There is %.1f gb free on the tablet, which means it is %.1f%% full", ageStr, capacity, used, free, percent);
   }
}

MyTablets.java
----------------
import java.util.ArrayList;

public class MyTablets {
   public static void main(String[] args) {
       ArrayList<Tablet> tabs = new ArrayList<Tablet>();
       Tablet t1, t2, t3;
       t1 = new Tablet(2, 512, 200);
       t2 = new Tablet(5, 256, 18);
       t3 = new Tablet(2.0/12, 512, 308.5);
       System.out.println("adding the 3 tablets to arraylist");
       tabs.add(t1);
       tabs.add(t2);
       tabs.add(t3);
       for(Tablet t : tabs)
           System.out.println(t);
      
       System.out.println("\nupdating the 3 tablets");
       t1.setUsed(0);
       t3.setCapacity(1000);
       t2.setUsed(t2.getUsed() + 25);
      
       for(Tablet t : tabs)
           System.out.println(t);
      
       System.out.println("\ndeleting the 5 year old tablet");
       tabs.remove(t2);
      
       System.out.println("\nadding 10 year old tablet");
       tabs.add(new Tablet(10, 128, 127));
      
       for(Tablet t : tabs)
           System.out.println(t);
      
      
       double totalCapacity = 0, totalFree = 0;
       for(Tablet t : tabs) {
          
           totalCapacity += t.getCapacity();
           totalFree += t.getCapacity() - t.getUsed();
       }
      
       System.out.println("Total capacity = " + totalCapacity + " gb");
       System.out.println("Total free space = " + totalFree + " gb");
   }
}