write a complete class named elephant that includes: - an appropriately named integer instance variable for storing its age - an appropriately named double instance variable for storing its weight - a default constructor that initializes the instance variables to zero - a parameter constructor that initializes the instance variables to the values of the corresponding arguments - a method named loseweight that causes the elephant's weight to decrease by one fourth of his/her weight - a method called talkingelephant that prints off the elephant's age and weight as a complete sentence
