/**
 * Write a description of class Memory here.
 *
 * @author (Roy Mpanju)
 * @version (a version number or a date)
 */
public class Memory extends Operations
{
    Double numberInMemory = 0.0;
    
    /**
     * An example of a method - replace this comment with your own
     *
     * @param  y  a sample parameter for a method
     * @return    the sum of x and y
     */
    public Double storeInMemory(Double currentDisplay)
    {
        // put your code here
        numberInMemory = currentDisplay;
        return numberInMemory;
    }
    
    public Double clearMemory(){
        return numberInMemory = 0.0;
    }
    
    public Double retrieveFromMemory(){
        return numberInMemory;
    }
    
    //public String 
}