Write a Java REST client to perform the following- The client will read the contents of the file - invoice.txt.

The first line of the file will display the type of the currency. The client will then consume the web service written in step 1 to perform currency conversion and create similar files for the other 2 currencies. As an example if invoice file contains figures in GBP, client will produce two files - invoive_USD.txt and invoice_EUR.txt. Program should be able to detect this change and produce appropriate files when the currency is changed in the original file.