Answer to Question #261250 in Java | JSP | JSF for vikki

Question

Write a class Battery that models a rechargeable battery.

        Capacity: double

        String company;

·        having no parameter – for setting values to zero or null.

·        having two parameters for assigning values to both data members.

·        Overload the above constructor and use this keyword to set the values of data members

·        Provide getters and setters for data member(s).

·        The method public void drain (double amount) drains the capacity of the battery by the given amount.

·        The method public void charge () charges the battery to its original capacity.

·        A method toString to print object data.

1.     Inside main, create 3 objects.

a.     Set values of first object using constructor.

b.     Take data from user and set the values for the 2 objects and display values.

2.     Call all the above methods (drain, charge) and display updated values.

Answer 1

public class Battery
{
      private final int Maximumlimit = 100;
      private double fullycharged;
      private double B_capacity;




public Battery(double capacity)
{
     if(capacity <=  Maximumlimit)
     { 
         B_capacity = capacity;
         fullycharged = capacity;
     }
     else
     {
          throw new IllegalArgumentException("Error! Battery capacity out of range: " + this.B_capacity +  " expected range 0 <= batteryCapacity < " +            MAX_BATTERY_LIMIT);


     }


}
public void drain(double amount)
{
     B_capacity = B_capacity - amount;
     if(B_capacity < 0) 
      B_capacity = 0;
}


public void charge()
{


     B_capacity = fullycharged;
}


public double getRemainingCapacity()
{
     return B_capacity;
}


}