Problem Solving : Compund Interest

Write a Java Program to calculate Compound Interest for the following cases.

1. A customer invests Rs 1000 in a bank that offers a ROI(Rate of Interest) of 8% per annum.
2. Calculate the Amount at the end of the 1st year
3. Calculate the Amount at the end of the 3rd month.
4. Calculate the amount at the end of 20 days.
5. Calculate the number of months/days/yrs when the amount would double, triple and four times.
6. Calculate the amount,years/days/months the Customer would have to invest to earn Rs 10,000.
7. Calculate the Principle Min-Max Rate of Interest(ROI) at which the customer would be able to earn 10,000 for each year over a period of 5 years.
8. Investor invests(tops up) 100Rs every month, calculate the amount at the end of year,2 months and 50 days Rate of Interest 8%.