Compounding Calculator re-upgrade

I. Customer needs

Completed requirements:

1. Customer said: Help me develop a compound interest calculation software.

2. If according to simple interest calculation, how much is the principal and interest?

3. If a pension of $3 million is to be raised after 30, the average annual return is 3%, what is the amount of principal that must be invested now?

4. Interest rate is so low, compounding profits are so strong, if take 1 million yuan to buy annual rate of return 10% of the stock, if all smooth, too long, 1 million yuan becomes 2 million yuan?

5. If I want to turn $1 million into $2 million within 10 years, how much should I find the investment tool to help me achieve my goals? If you want to double the principal after 5 years, how much should the rate of return be at least?

6. If the savings of $30,000 are to be invested annually, with a return of 3% per annum, and then a new round of investment in these Benli and annuities, what will the total value of assets be after 30 years? What if we switch to 3000 a month?

7. To pursue benefits and to face unpredictable financial investment risks, "you cannot put eggs in the same basket", so it is necessary to make a portfolio investment.

The above calculations and comparisons can help customers make investment decisions.

Customer: So can you help me to record a different type of investment, and dynamically show the current value of money?

Compound interest calculation and re-upgrade------------------------------------------------------------

Customers under the guidance of the people have more ideas:

1. I often fill in this data ..... Would you please fill it in beforehand? ......
2. Make the interface simple and beautiful.
3. Can you help me to turn into an app, I put on the mobile phone is more convenient?
4. I think this is very useful, many people may need these features, to do my public number it?
5. Could you please not let me fill out the form, let me wind the news, or say a word to the phone?

Each group selected one or two directions to improve, so that our investment calculation and recording tools, to be released to the user version of the use.

Two. Task assignment

I: responsible for the insertion of music and the details of the interface to beautify

teammates: interface to insert images and find bugs

Three. Pair members

Name: Feng Zifan

Study No.: 201406114214

Blog Park Address: http://www.cnblogs.com/14fzf/

GitHub Address: Https://github.com/fengzf/Ruan/tree/master/Fuli

Four. The modified interface

Music was also inserted during the calculation of the calculator, allowing the customer to hear pleasant music while compounding the calculations.

Five. Harvest and summary

Through the beautification of this interface, I learned to insert pictures in Java and insert music related programs, these specific code on the above GitHub, beautiful pictures, beautiful interface, more to attract customers and users of the eyeball, soft music with a good picture, very poetic.

Every update has progress, although my progress may be smaller than the height of others, although I do not have a good talent, but I will use hard to conquer the difficult and not the field. And my Java Foundation is not good, I will make full use of the knowledge on the Internet and books, and constantly improve their ability and level of all aspects.

Compounding Calculator re-upgrade