This is a cmd-based rate calculation system allowing borrowers to obtain a quote from our pool of lenders for 36 month loans.

Usage:

quote [file_name/path] [borrowed_amount] [additional_arguments]

Ex: quote market.csv 1000
quote --help
quote market.csv 1000 --delimiter;

Assumptions made

The program takes a csv file containing required columns (Lender, Rate, Available) amongst other possible columns.The order of the columns doesn't matter.

If the provided file is too large to be read into memory, the program will probably fail with an outofmemoryexception, depending on the jvm parameters.

If the CSV file is not available at path given(can be relative or absolute), is not accessible or is not a valid CSV file, the program will end with an exception.

How the CSV file is parsed, can also be configured through command arguments:

• -d or --delimiter in order to specify the delimiter (defaults to comma)
• --charset - to specify charset(default to UTF-8)
• -m or --map - to specify corresponding columns in CSV to Rate, Lender, and Available amount ( ex: --mapRATE:MyRateColumn)
• --help - see a list of commands

If the amount to be borrowed cannot be covered by the cummulative available sum from lenders, the program will and with an exception.

I have used BigDecimal instead of double for precise computations.

You will find some math classes in utils package. I used them for BigDecimal.pow(BigDecimal) since it's lacking in the standard math library.

In order to test, you can access the folder quote-test - it contains a batch file, the market.csv and the jar package.