package personoop;
import java.util.*;
import java.lang.*;
import java.io.*;
abstract class Thing {
int age = 0;
abstract public String toString();
}
class Animal extends Thing {
Boolean alive = true;
Animal(int age, Boolean alive) {
this.age = age;
this.alive = alive;
}
Animal(int age) {
this.age = age;
}
Animal() {}
public String aliveString() {
return this.alive ? "alive" : "dead";
}
public String toString() {
return "This animal is " + this.age + " years old and is " + this.aliveString();