Answer Posted / sumann

You can compare the values of 2 Strings by following
methods of String class:-
Eg:- String a="abc"; String b="abc";
1> .equals() method it will return a boolean value.
eg:- if(a.equals(b)) will return true.
2> .compareTo() method.If the two java strings are exactly
the same, the compareTo method will return a value of 0
(zero).
eg:- if (a.compareTo(b) == 0){
// this line will print
System.out.println("a and b strings are the same.")
}

Say you want to store the information about a number of pets in an array. Typical information that you could store for each pet (where relevant) would be • Breed of animal • Animal's name • Its birth date • Its sex • Whether it has been sterilised or not • When it is due for its next inoculation • When it last had its wings clipped For each type of pet (eg. dog, cat or bird) you would typically define a class to hold the relevant data. Note: You do not need to implement these classes. Just answer the following questions. 3.1.1 What would be the advantage of creating a superclass (eg. Pet) and declaring an array of Pet objects over simply using an array of Objects, storing each of the instances of the different pet classes (eg. Dog, Cat or Bird) in it? 3.1.2 Would you define Pet as a class or as an interface? Why? (2) (2)

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