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Simple Java code

I need few lines of code in Java. The objective is to merge 2 or more datasets. For somebody that knows Java, this will really take 1 minute.

There are 2 or more files, csv. File 1 contains information on firms. In column B there will be the tax file # associated to each firm. I believe each # will show up only once, although I am not 100% sure and we need to take into account that.

If column A in file 1 is empty,

Step 1: for each tax file #, we have to create a new # (in ascending order). Write this new # in column A in file 1.

Step 2 - verify that column A in file 2 is empty. In file 2 column B there are the tax file #. Each tax file # will show up more than once. We are unable to know the order in which the tax file # will show up in file 2 nor how many times they show up. For each tax file # in column B file 2, associate the corresponding new # in column A file 1 and write it in column A file 2.

If column A file 1 is not empty, then do step 2 using the new # already present in file 1.

That's it.

Basically, you want to create a program that asks the the user to select file 1 and 2 from a folder (call file 1 "main file" and file 2 "secondary file") and then it does what I explained above

do not erase any column.

Evner: Java

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Om arbejdsgiveren:
( 5 bedømmelser ) CHICAGO, United States

Projekt ID: #9915260

6 freelancere byder i gennemsnit $25 på dette job

kjgroup197318

---------------------------------Best Result on Time-------------------------------------------- Hello! I read your description carefully. Your project is absolutely wonderful and fascinating. I have rich experie Flere

$106 USD in 3 dage
(4 bedømmelser)
4.0
akshayatm

Hi, I am an experienced java proffessional expert in core java j2ee spring mvc hibernate orm webservices. I can do this. Pls contact fro further progress.

$30 USD på 1 dag
(7 bedømmelser)
3.6
bsse2059

Hi sir.....! I will do that task easily. i am a professional java developer and recently completed a project that reads text from a word file and save it to text file.I can show it to you. So please contact me before Flere

$25 USD in 0 dage
(9 bedømmelser)
3.1
Tullar

Hi, I'm free and ready to handle a small java task :). Right now I have a break between bigger projects. Let's discuss details! Best regards Jan

$30 USD in 3 dage
(5 bedømmelser)
3.0
mittufreelancer

I have 9 years of experience in java/J2ee software development My expertise include following skills Experience in JEE technologies Servlets, JSP and application frameworks Spring, Hibernate. Experience in messaging Flere

$17 USD på 1 dag
(6 bedømmelser)
2.3
arifshaon

Happy to help. Let me if you need examples of my previous work. Also, please confirm that this is a command line application. Cheers Arif

$30 USD in 0 dage
(1 bedømmelse)
1.2
ZhangShan

Hello! I read your description carefully. I am really interested in your project as a computer vision expert. Looking forward to your positive response. Thank you Zhangshan

$30 USD in 3 dage
(1 bedømmelse)
0.9
jahangirhassan

I have ample experiance in java. I have done file mahipulation similar to one you have described. I had to take data from a csv file perform computation and write values to another csv file.

$15 USD in 0 dage
(0 bedømmelser)
0.0