Question

One of the lines in a java file I’m trying to understand is as below.

return new Scanner(file).useDelimiter("\\Z").next();

The file is expected to return upto “The end of the input but for the final terminator, if any” as per java.util.regex.Pattern documentation. But what happens is it returns only the first 1024 characters from the file. Is this a limitation imposed by the regex Pattern matcher? Can this be overcome? Currently I’m going ahead using a filereader. But I would like to know the reason for this behaviour.

Answer 1

Try wrapping the file object in a FileInputStream