1.Given a positive integer number says n, write a java program to print the first n squared numbers recursively.

Sample run 1:

Enter the value of n: 5 -------------------------------------

First 5 square numbers are: 1 4 9 16 25

Sample run 2:

Enter the value of n: 10 ------------------------------------- First 10 square numbers are: 1 4 9 16 25 36 49 64 81 100

Sample run 3:

Enter the value of n: 12 ------------------------------------- First 12 square numbers are: 1 4 9 16 25 36 49 64 81 100 121 144

2.Consider the following interface:

interface Validate

{ boolean check(Object o); }

Classes that implement Validate interface, check against specific conditions to evaluate the object O. For example, a class validateAge checks if a birth year indicated by the persons age is over 18 years old or not. If v is a validateAge object, then v.check(2001) returns true, and v.check(2003) returns false. Write the class validateAge, and recall casting from a type to another.

please have written answer