Java reading a file into an ArrayList?

Question

How do you read the contents of a file into an ArrayList in Java?

Here are the file contents:

cat
ho         


        

Answer 1

To share some analysis info. With a simple test how long it takes to read ~1180 lines of values.

If you need to read the data very fast, use the good old BufferedReader FileReader example. It took me ~8ms

The Scanner is much slower. Took me ~138ms

The nice Java 8 Files.lines(...) is the slowest version. Took me ~388ms.