1. Use inheritance to create hierarchies of related classes

2. Declare and use of protected methods

3. Override superclass method

4. Use super keyword to call one of the superclasss methods or constructors

Can Someone please Solve this Exercise:

4.2. Exercise 1 Consider the two classes (MeanComputation and StandardDeviationCalculation). The main usage of MeanComputation class is to compute the mean (average) of values received in an array as parameter of the constructor. Similarly, the main usage of StandardDeviationCalculation class is to calculate the standard deviation S, for values received in an array as parameter of the constructor, where s=n(xx)2 public class Meancomputation \{ private double[] numbers; public Meancomputation(double[] numbers) \{ this. numbers = new double[numbers.length]; for (int i=0;i i++ ) this.numbers [i]= numbers [i]; \} private double computetotal() \{ double total =.; for(double e : this.numbers) total += e; return total; \} public double computemean() \{ return (computeTotal() / this.numbers.length); \} public double[] getNumbers() \{ return this.numbers; \} \} Run the test programs for the capabilities of the classes MeanComputation and StandardDeviationCalculation provided with the questions