Why error? (java.nio.charset.MalformedInputException: Input length = 1)

Question

Java code:

 String fileName = "settings.txt";

 String text = "AdresProgramm =";
 String delimiter = ";";

 Optional<String> result =
 Files
     .lines(Paths.get(fileName))
     .filter(e -> e.contains(text))
     .map(e -> {
         int start = e.indexOf(text);
         int end = e.indexOf(delimiter, start + text.length());

             return e.substring(start, end);
     })
     .findFirst();

 result.ifPresent(System.out::println);

File contents: AdresProgramm =D:\\ЭСЧФ\;

java.nio.charset.MalformedInputException: Input length = 1

It seems that it's an encoding problem http://stackoverflow.com/questions/30609062/java-nio-charset-malformedinputexception-input-length-1 — RubioRic, Mar 27 '17 at 07:24

score 0 · Answer 1 · edited May 23 '17 at 12:10

0

This looks like an encoding issue because of the cyrillic alphabet you are using.

Think the ISO-8859-1 encoding works for European characters apparently. Not sure if UTF-8 will work.

Have you looked at this page?

edited May 23 '17 at 12:10

Community

1
1

answered Mar 27 '17 at 07:27

Subramaniam Ramasubramanian

859
1
12
31

score 0 · Answer 2 · answered Mar 27 '17 at 07:43

0

Files.
lines(Paths.get(fileName), Charset.forName("windows-1251"))

answered Mar 27 '17 at 07:43

aaa

121
1
6

I think this answer needs an explanation as to "why" that charset wouldwork – Steve Dec 14 '17 at 19:13
Explain that the overloaded `lines(Path)` uses UTF-8, which fails on Cyrillic. – Joop Eggen Nov 28 '21 at 03:10

score 0 · Answer 3 · answered Mar 15 '19 at 14:33

This is not an answer but may be useful to others facing this issue while coding to read mainframe files.

Use this like below:

List<String> allLines = Files.readAllLines(path,StandardCharsets.ISO_8859_1);

IBM calls it code page 819 or CP819. This is a life saver if you are processing Extended Binary format files sourced from Mainframe systems.

Why error? (java.nio.charset.MalformedInputException: Input length = 1)

3 Answers3