Scanner + System.in stop condition

Question

I'm reading a file with Scanner + System.in. My command in Linux looks like:

cat -A test.txt | java -jar test.jar

I'm reading input like:

Scanner input = new Scanner(System.in);

    while (input.hasNextLine())
    {
        String log_line = input.nextLine();
    }

The question is.. How I can stop reading when the end of file is reached?

Answer 1

It seems that problem is -A option, not Your java code (it works correctly on plain files):

$ echo -e "foo\nbar" | java -jar Test.jar 
foo
bar
$

Maybe test.txt contains some non-printable chars that Scanner can't handle...