Java: How to read a text file

Question

I want to read a text file containing space separated values. Values are integers. How can I read it and put it in an array list?

Here is an example of contents of t

Answer 1

Use Apache Commons (IO and Lang) for simple/common things like this.

Imports:

import org.apache.commons.io.FileUtils;
import org.apache.commons.lang3.ArrayUtils;

Code:

String contents = FileUtils.readFileToString(new File("path/to/your/file.txt"));
String[] array = ArrayUtils.toArray(contents.split(" "));

Done.