How to read one txt file in java twice?

Question

Java

It is necessary to read an array of numbers from a txt file, while not using any "smart" sheets in Java, that is, only int[ ] is available. Accordingly, to create an array, you must first find out the number of lines in the file. The problem is that after going through that txt for the first time, I can't get back to the first line of the file to start reading it. (I use FileReader)

Answer 1

Read as string and then split (.split(...))