Murachs java 6th edition.. please break down or highlight what belongs where. just needing a better visual understanding.

Exercise 4-1 Test the Fu 2. To make sure that the results are correct. that calculates the future value that displays 3. Test the program with simple entries like 100 for monthly investment, 12 for yearly interest (I percent each month), and 1 for year. Then, check the results to make sure they're correct