interface carnivorous
{
	void huntingRadius();
}
interface flying
{
	void maximumTimeInFlight();
}
public class animal {
	public animal()
	{System.out.println("it is a animal.");}
}
class mammal extends animal
{
	public mammal()
	{
	System.out.println("it's a mammal.");
	}

	}
class bird extends animal
{
	public  bird()
	{System.out.println("it's a bird.");}

}
class cow extends mammal
{
	public cow()
	{System.out.println("it's a cow.");}
}
class human extends mammal implements carnivorous
{
	public human()
	{System.out.println("it's a human.");}

	public void huntingRadius() {
		// TODO Auto-generated method stub
		System.out.println("the huntingRadius is:80.");
	}

}
class rat extends mammal implements carnivorous
{
	public rat()
	{System.out.println("it's a rat.");}

	public void huntingRadius() {
		// TODO Auto-generated method stub
		System.out.println("the huntingRadius is:80.");
	}
}
class bat extends mammal implements carnivorous,flying
{
	public bat()
	{System.out.println("it's a bat.");}
public void maximumTimeInFlight() {
		// TODO Auto-generated method stub
		System.out.println("the maximumtime is:100.");		
	}

	public void huntingRadius() {
		// TODO Auto-generated method stub
		System.out.println("the huntingRadius is:80.");
	}
}
class sparrow extends bird implements flying
{
	public sparrow()
	{System.out.println("it's a sparrow.");	}
	public void maximumTimeInFlight() {
		// TODO Auto-generated method stub
		System.out.println("the maximumtime is:100.");		
	}
}
class  kiwi extends bird
{
	public kiwi()
	{System.out.println("it's a kiwi.");}	
}


class interfcommon
{
	public static void main(String args[])throws Exception
	{
		animal tz1=new human();
		tz1.huntingRadius();
		animal tz2=new bat();
		tz2.maximumTimeInFlight();
	}	
}