Question

I need to make changes to code following the steps below. The code that needs to be modified is below the steps. Thank you.

1. Refactor Base Weapon class:

a.            Remove the Weapon abstract class and create a new Interface class named WeaponInterface.

b.            Add a public method fireWeapon() that returns void and takes no arguments.

c.             Add a public method fireWeapon() that returns void and takes a power argument as an integer type.

d.            Add a public method activate() that returns void and takes an argument as an boolean type.

2. Refactor the specialization Weapon Classes:

a.            Refactor the Bomb class so that it implements the WeaponInterface class.

b.            Refactor the Gun class so that that it implements the WeaponInterface class.

3. Refactor the Game Class:

a.            Remove all existing game logic in main().

b.            Create a private helper method fireWeapon() that takes a WeaponInterface as an argument as a weapon. For the passed in weapon activate the weapon then fire the weapon.

c.             Create an array of type WeaponInterface that can hold 2 weapons.

d.            Initialize the first array element with a Bomb.

e.            Initialize the second array element with a Gun.

f.             Loop over the weapons array and call displayArea() for each weapon.

------

// Weapon.java

public abstract class Weapon {
   public void fireWeapon(int power)
   {
       System.out.println("Class Name :"+this.getClass().getSimpleName());
       System.out.println("Mathod Name :"+new Throwable().getStackTrace()[0].getMethodName());
       System.out.println("Power :"+power);
   }
   public abstract void activate(boolean enable);
}

______________________

// Bomb.java

public class Bomb extends Weapon {
   @Override
   public void fireWeapon(int power)
   {
       System.out.println("Class Name :"+this.getClass().getSimpleName());
       System.out.println("Mathod Name :"+new Throwable().getStackTrace()[0].getMethodName());
       System.out.println("Power :"+power);
   }
   public void fireWeapon()
   {
       System.out.println("Class Name :"+this.getClass().getSimpleName());
       System.out.println("Mathod Name :"+new Throwable().getStackTrace()[0].getMethodName());
       super.fireWeapon(67);
   }
   @Override
   public void activate(boolean enable) {
       System.out.println("Class Name :"+this.getClass().getSimpleName());
       System.out.println("Mathod Name :"+new Throwable().getStackTrace()[0].getMethodName());
       System.out.println("Enable :"+enable);
   }
}

_____________________________

// Gun.java

public class Gun extends Weapon {
   @Override
   public void fireWeapon(int power)
   {
       System.out.println("Class Name :"+this.getClass().getSimpleName());
       System.out.println("Mathod Name :"+new Throwable().getStackTrace()[0].getMethodName());
       System.out.println("Power :"+power);
   }
   public void fireWeapon()
   {
       System.out.println("Class Name :"+this.getClass().getSimpleName());
       System.out.println("Mathod Name :"+new Throwable().getStackTrace()[0].getMethodName());
       super.fireWeapon(98);
   }
   @Override
   public void activate(boolean enable) {
       System.out.println("Class Name :"+this.getClass().getSimpleName());
       System.out.println("Mathod Name :"+new Throwable().getStackTrace()[0].getMethodName());
       System.out.println("Enable :"+enable);
   }
}

_____________________________

// Game.java

public class Game {
   public static void main(String args[]) {
       Bomb b = new Bomb();
       Gun g = new Gun();
       b.fireWeapon(45);
       g.fireWeapon(60);
   }

}

Answer 1

//Java Code

public interface WeaponInterface {
    /**
     *  public method fireWeapon() that
     *  returns void and takes no arguments.
     */
    public void fireWeapon();
    /**
     *  public method fireWeapon() that returns void and
     *  takes a power argument as an integer type.
     */
    public void fireWeapon(int power);
    /**
     * public method activate() that returns void and
     * takes an argument as an boolean type.
     */
    public void activate(boolean enable);
}

//=========================================

public class Gun implements WeaponInterface {
    @Override
    public void fireWeapon(int power)
    {
        System.out.println("Class Name :"+this.getClass().getSimpleName());
        System.out.println("Method Name :"+new Throwable().getStackTrace()[0].getMethodName());
        System.out.println("Power :"+power);
    }
    @Override
    public void fireWeapon()
    {
        System.out.println("Class Name :"+this.getClass().getSimpleName());
        System.out.println("Method Name :"+new Throwable().getStackTrace()[0].getMethodName());
        fireWeapon(98);
    }
    @Override
    public void activate(boolean enable) {
        System.out.println("Class Name :"+this.getClass().getSimpleName());
        System.out.println("Method Name :"+new Throwable().getStackTrace()[0].getMethodName());
        System.out.println("Enable :"+enable);
    }
}

//=========================================

public class Bomb implements WeaponInterface {
    @Override
    public void fireWeapon(int power)
    {
        System.out.println("Class Name :"+this.getClass().getSimpleName());
        System.out.println("Method Name :"+new Throwable().getStackTrace()[0].getMethodName());
        System.out.println("Power :"+power);
    }
    @Override
    public void fireWeapon()
    {
        System.out.println("Class Name :"+this.getClass().getSimpleName());
        System.out.println("Method Name :"+new Throwable().getStackTrace()[0].getMethodName());
        fireWeapon(67);
    }
    @Override
    public void activate(boolean enable) {
        System.out.println("Class Name :"+this.getClass().getSimpleName());
        System.out.println("Method Name :"+new Throwable().getStackTrace()[0].getMethodName());
        System.out.println("Enable :"+enable);
    }
}

//===============================================

public class Game {
    public static void main(String args[]) {
        /**
         * Create an array of type WeaponInterface that can hold 2 weapons.
         */
        WeaponInterface[] weapons = new WeaponInterface[2];
        weapons[0]= new Bomb();
        weapons[1] = new Gun();
        for (int i = 0; i <weapons.length ; i++) {
            displayArea(weapons[i]);
        }

    }
    /**
     *  a private helper method fireWeapon() that takes
     *  a WeaponInterface as an argument as a weapon.
     */
    private static void displayArea(WeaponInterface weapon)
    {
        weapon.activate(true);
        weapon.fireWeapon();
    }
}

//Output

//If you need any help regarding this solution .......... please leave a comment .......... thanks