Hands-On Design Patterns with Java

Programming the design pattern

Medication Administering System starts with a Medicine interface. Let's see how that works:

1. As shown here, the interface contains an administerMedication() method:

public interface Medicine {    void administerMedication(int amount);}

2. The Antibiotic class is one of the two classes that implement the Medicine interface. The class overrides the administerMedication() method:

public class Antibiotic implements Medicine {    @Override    public void administerMedication(int amount) {        System.out.print(amount + " antibiotic pills administered.");    }}

3. The PainRelief class is the second of the two classes that implement the Medicine interface. The class overrides the administerMedication() method with tailored output text: ...