Files.readString reads a whole text file into one String. Files.readAllLines returns a list of lines without the line breaks. Use the list when you want to handle one line at a time.
Both calls throw if the file is missing. Check Files.exists first when a missing file is a normal case, such as a first run with no saved notes.
Example
The loop prints each line. A file version looks the same once the list has been read from disk.
import java.util.List;
public class ReadNote {
public static void main(String[] args) {
List<String> lines = List.of("Java", "Chennai");
for (String line : lines) {
System.out.println(line);
}
}
}The sample uses a list so the page can show the loop without a file on the server. On your machine, replace List.of with Files.readAllLines(Path.of("note.txt")).
