(SOLVED) Java: FileReader vs. Scanner

Question

If we have Scanner, why would we read file with FileReader?

Answer 1

FileReader is a very low level API that can only read a single character at a time, that's why most commonly it is wrapped inside a BufferedReader, which also add some convenience, e.g. reading whole lines at a time.
Scanner is typically slower than BufferedReader because it uses regular expressions to parse the text.

https://medium.com/@isaacjumba/why-use-bufferedreader-and-bufferedwriter-classses-in-java-39074ee1a966

However if you need to work with files, I really recommend to check out the more modern java.nio.file API, which is the best way to process files in Java.

https://www.baeldung.com/java-nio-2-file-api

Answer 2

Thanks!

Answer 3

https://www.stackchief.com/blog/FileReader%20vs%20BufferedReader%20vs%20Scanner%20%7C%20Java

https://www.java67.com/2016/06/5-difference-between-bufferedreader-and-scanner-in-java.html?m=1