How to write an ArrayList of Strings into a text file?

Question

I want to write an ArrayList into a text file.

The ArrayList is created with the code:

ArrayList arr = new A         


        

Answer 1

You can do that with a single line of code nowadays. Create the arrayList and the Path object representing the file where you want to write into:

Path out = Paths.get("output.txt");
List arrayList = new ArrayList<> ( Arrays.asList ( "a" , "b" , "c" ) );

Create the actual file, and fill it with the text in the ArrayList:

Files.write(out,arrayList,Charset.defaultCharset());