Consider the following class declaration: 

public class Square
{
 private double sideLength;
 public double getArea()
 {
 return sideLength * sideLength;
 }
 public double getSideLength()
 {
 return sideLength;
 }
}

a. Write a no-arg constructor for this class. It should assign the sideLength field the value 0.0.

b. Write an overloaded constructor for this class. It should accept an argument that is copied into the sideLength field.