Question

use java

follow my code:

public class q1 {
   // Instance Variables
   int currentFloor;
   double maximumWeight;
   int topFloor;
  
   // Constructor Declaration of Class
   public q1 (int currentFloor, double maximumWeight, int topFloor)
   {
   this.currentFloor = currentFloor;
   this.maximumWeight = maximumWeight;
   this.topFloor = topFloor;
   }
  
   // Property to get value of currentFloor instance variable
   public int getCurrentFloor()
   {
   return currentFloor;
   }
  
   // Property to get value of maximumWeight instance variable
   public double getMaximumWeight()
   {
   return maximumWeight;
   }
  
   // Property to get value of topFloor instance variable
   public int getTopFloor()
   {
   return topFloor;
   }
   }

Instantiate a couple of

different Elevator

objects

Set their data members

Use Information Hiding

Labwork on Arrays Northwestern Polytechnic University Dr. Nels Vander Zanden 3

Add Access Specifiers

Write get/set methods

Add a second constructor

Add methods

upOneFloor -- note cannot

exceed the top floor

downOneFloor – cannot go

below floor one

isAtTopFloor -- return true if

on the top floor, false

otherwise

Answer 1

public class q1 {
// Instance Variables
int currentFloor;
double maximumWeight;
int topFloor;
  
// Constructor Declaration of Class
public q1 (int currentFloor, double maximumWeight, int topFloor)
{
this.currentFloor = currentFloor;
this.maximumWeight = maximumWeight;
this.topFloor = topFloor;
}

// Copy constructor
public q1(Elevator el)
{
   this.currentFloor = el.getCurrentFloor();
   this.maximumWeight = el.getMaximumWeight();
   this.topFloor = el.getTopFloor();
}
  
// Property to get value of currentFloor instance variable
public int getCurrentFloor()
{
return currentFloor;
}
  
// Property to get value of maximumWeight instance variable
public double getMaximumWeight()
{
return maximumWeight;
}
  
// Property to get value of topFloor instance variable
public int getTopFloor()
{
return topFloor;
}

// Property to set the value of the currentFloor
   public void setCurrentFloor(int currentFloor)
   {
       if(currentFloor >=1 && currentFloor <= top_floor)
           this.currentFloor = currentFloor;
   }
  
   // Property to set the value of the maximumWeight
   public void setMaximumWeight(double maximumWeight)
   {
       if(maximumWeight > 0)
           this.maximumWeight = maximumWeight;
   }
  
   // Property to set the value of topFloor
   public void setTopFloor(int topFloor)
   {
       if(topFloor > 1)
           this.topFloor = topFloor;
   }
  
   // method to make the elevator go up by 1 floor, if possible
   public void upOneFloor()
   {
       if(currentFloor < topFloor) // if not reached the top floor
           currentFloor++;
   }
  
   // method to make the elevator go down by 1 floor, if possible
   public void downOneFloor()
   {
       if(currentFloor > 1)
           currentFloor--;
   }
  
   // method to check if the elevator is at top floor
   public boolean isAtTopFloor()
   {
       return(currentFloor == currentFloor < topFloor);
   }
  
  
   public static void main(String[] args) {
      
       Elevator ele1 = new Elevator(1,150,10); // create object using parameterized constructor
       Elevator ele2 = new Elevator(ele1); // create object using copy constructor
       // change the values of the data members
       ele2.setCurrentFloor(3);
       ele2.setMaximumWeight(120);
       ele2.setTopFloor(5);

   }

}