// Speaker Example

// Test the Cat, Dog and Person classes.
// Also create an array of Speaker objects
// and test the Speak method for them.

public class TestSpeaker
{
    public static void main(String[ ] args)
    {
        Animal a = new Animal( );
        // Declare and instantiate objects.
        Dog x = new Dog("Fido");
        Cat y = new Cat("Felix");
        Person z = new Person("Alice", 'F', 25);

        // Test Philosophize method.
        System.out.println("Test Philosophize method.");
        z.Philosophize();
        System.out.println();

        // Print objects using ToString methods.
        System.out.println("Print objects using ToString methods.");
        System.out.println(x);
        System.out.println(y);
        System.out.println(z);
        System.out.println();

        // Create array of Speaker;
        Speaker[] s = new Speaker[3];

        // Each object implements Speaker so can be
        // assigned to a speaker array.
        s[0] = x;
        s[1] = y;
        s[2] = z;

        // Test speaker methods.
        System.out.println("Test speaker methods.");
        for(int i = 0; i <= 2; i++)
            s[i].speak();
    }
}

// Output: