I am trying to make a program that performs some sorting on a 2D Array, but I am unable to find a way to put the data from the CSV file into the 2D Array, all it comes out is errors and im not sure how to fix it. I am aware of array lists but I do not want to use array lists here.

I am working on a private project that I need to write some data in a csv file and edit it if needed so when I write the data it cool everything works fine but when i try to edit some data in the file i find some problems when i tryed to look for solutions mostly were to make a temp.csv that loads all the data in the csv file and edit what’s needed and then rename it for the first file and this will be bad if there was a lot of data in the file too much cpu and memory usage and time spending.