package examples;

//Any new Java class can implement any number of interfaces
class Comedian implements Laughable, Booable
{
	String name;

	public Comedian(String s)
	{
		name = new String(s);
	}
	// Many possible methods omitted
	public void laugh()
	{
		System.out.println("Ha ha ha for " + name);
	}

	public void boo()
	{
		System.out.println(name + " really stinks!");
	}
}

class SitCom implements Laughable
{
	String title;

	public SitCom(String s)
	{
		title = new String(s);
	}
	// Many possible methods omitted
	public void laugh()
	{
		System.out.println("Chuckle chuckle for " + title);
	}
}

class Clown implements Laughable, Booable
{
	String type;

	public Clown(String s)
	{
		type = new String(s);
	}
	// Many possible methods omitted
	public void laugh()
	{
		System.out.println(type + " clown makes me chortle");
	}

	public void boo()
	{
		System.out.println(type + " clown makes me gag!");
	}
}

public class ex24
{
	public static void main(String [] args)
	{
		Laughable L1, L2, L3, L4, L5;
	
		// L1 = new Laughable();  // not legal, since we cannot make objects
		                          // from the interface itself.  We need to use
		                          // the classe that implement it.

		L1 = new Clown("Rodeo");  L1.laugh();
		// Even though the method boo() is defined for the class Clown, it
		// cannot be accessed here, since it is not in the Laughable interface.
		// The statement below will generate a compilation error.
		// L1.boo();
		L2 = new SitCom("Scrubs");  L2.laugh();
		L3 = new Comedian("Chris Rock");  L3.laugh();
		L4 = new SitCom("Two and a Half Men");  L4.laugh();
		L5 = new Clown("Circus");  L5.laugh();

		Booable B1, B2, B3, B4, B5;

		B1 = (Booable) L1;  B1.boo();
		// B2 = (Booable) L2; // not legal, since the object currently in L2
		                      // does not implement Booable
		B3 = (Booable) L3;  B3.boo();
		// B4 = (Booable) L3;
		B5 = (Booable) L5;  B5.boo();
	}
}