Design and implement the class GeometricSequence that represents the geometric sequence
a, a x r, a x r2, a x r3, a x r4, a x r5, ...
The class should have the following private data fields:
• The first term, a, in the sequence
• The ratio r between successive terms in the sequence
• The value of the current term in the sequence
• The value of the exponent for the current term in the sequence
Include a reasonable constructor, an accessor method for each data field, and a method toString. In addition, provide a mutator method for each of the following tasks:
• Replace the current term in the sequence with the next term
• Reset the current term in the sequence to the initial term in the sequence
Write a program that tests your class definition.