merge « CSV file « Java I/O Q&A

1. How to merge CSV files in Java

My first csv file looks like this with header included(header is included only at the top not after every entry):

.... n records
My second file might look like this:
.... n records with ...

2. Merging rows with same ID together with dynamic headers with CSV

Please Help, I just can't figure it out. A friend helped with this but could not figure it our either. I am trying to merge CSV rows together that have the same ID number, but have different values in the fields. I receive csv files weekly that can have different header names and sizes. For example, Read in this CSV file: ...