// Example: Interfaces
// Module: speaker
// Source code file: Test1.java
// Create classes that implement the Speaker interface.

import java.util.ArrayList;
// Example: Interfaces
// Module: speaker
// Source code file: Test1.java
// Create classes that implement the Speaker interface.

public class Test1 {

    public static void main(String[] args) {

        // Create objects.
        Cat c = new Cat("Simba");
        Dog d = new Dog("Mollie");
        Person p = new Person("Alice");

        // Print objects.
        System.out.println(c);
        System.out.println(d);
        System.out.println(p);
        System.out.println( );

        // Call speak methods of all objects
        // that implement Speaker interface.
        c.speak( );
        d.speak( );
        p.speak( );

        // An object that implements the Speaker
        // interface can also have other instance methods.
        p.philosophize( );

        // Add objects to the ArrayList collection that
        // implement the Speaker interface.
        ArrayList<Speaker> col = new ArrayList<Speaker>(10);
        col.add(c);
        col.add(d);
        col.add(p);

        // Print each object in collection and call
        // its speak method.
        for(Speaker obj : col) {
            System.out.println( );
            System.out.println(obj);
            obj.speak( );
        }
    }
}