Design and implement a class called MonetaryCoin that is
derived from the Coin class presented in Chapter 5. Store an
integer in the MonetaryCoin that represents its value and add
a method that returns its value. Create a main driver class
to instantiate and compute the sum of several MonetaryCoin
objects. Demonstrate that a monetary coin inherits its parent’s
ability to be flipped.

This is what is needed to be changed.

1) The main driver was to be a class of its own and not part of MonetaryCoin.

2) The output should list each coin's face and value on the same line.
3) The MonetaryCoin class should have its own constructor, gets and sets, and toString methods.

Answertrigger

The answer is b ; ); ? ;

Public static int mystery(int a[], int x) {     int c = 0;     for(int i = 0; i < a.length; i++) {        if (a[i] == x) c++;     } return c; }the method counts how many times an integer shows up in an integer array.the c variable is declared in the method to keep track of how many times the certain value has shown up.the for-loop loops through the entire array.the line    if (a[i] == x) c++;   checks if each element of the array is equal to the inputted integer to check. for each number in the array that is equal to the inputted integer x, the c variable will be incremented by 1. otherwise it will do nothing.then c is returned at the end of the loop.for example, if we have, in the main method with the mystery method coded in the class:     int arraytest[] = {2, 23, 23, 23, 3};     int testme = 23;     int count = mystery(arraytest, testme);     system.out.println(count); then the print out will be    3 because there are three 23s in that array.