// Class 1. Constructor Class
package battery;

/**
 * Coder: @GioLopera
 */
public class Battery {

    private double maxCapacity;
    private double curCapacity;

    public Battery(double capacity)
    {
        maxCapacity = capacity;
        curCapacity = maxCapacity;
    }

    public void drain(double amount)
    {
        curCapacity -= amount;
    }

    public void charge()
    {
        curCapacity = maxCapacity;
    }

    public double getRemainingCapacity()
    {
        return curCapacity;
    }

}

//Class 2. Tester Class

package battery;

/**
 *
 * Author: @GioLopera
 */
public class BatteryTester
{
    public static void main(String[] args)
    {
        Battery battery = new Battery(100.0);

        System.out.println(battery.getRemainingCapacity());
        System.out.println("Expected: 100.0");

        battery.drain(23.4);
        battery.drain(9.7);

        System.out.println(battery.getRemainingCapacity());
        System.out.println("Expected: 66.9");

        battery.charge();
        System.out.println(battery.getRemainingCapacity());
        System.out.println("Expected: 100.0");

    }

}