Java wrong value when reading from website

I'm trying to make a program, which gets a word from a website, which always gives you a random (German) word and counts how frequently a character is in the word. When I try my program with a stream from a list it works fine. If I read from the website, the word is displayed fine with System.out, but counting the letters does not work as intended. Here is my code:

public class WordCount {
public static String charStat(String urlString) throws IOException {
/*    List<String> list = new ArrayList<>();
list.add("word");
Stream<String> characterStream = list.stream();*/ //works totally fine every time
URL url = new URL(urlString);
Stream<String> characterStream = new BufferedReader(new InputStreamReader(url.openStream())).lines();
BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));
System.out.println(br.readLine());//BufferedReader only used to print the word so I can control
//if everything is working
int[] charNumber = new int[26];//size is 26 cause the alphabet has 26 characters
Runnable func = () -> {
characterStream
.map(String::toLowerCase)
.flatMapToInt(CharSequence::chars)
.filter(c -> c != ' ')
.map(c -> c - (int) 'a')//subtracting 'a'(97 in ascii) so a is in position 0 of the array
.forEach(i -> {charNumber[i]++;});
};
func.run();
characterStream.close();
return "a: " + charNumber[0];//returning how many times the letter a is present, could be any letter
}
public static void main(String[] args) throws IOException {//Ik that main shouldn't throw an exception
System.out.println(charStat("https://randomeword.azurewebsites.net/api/word"));//the website im
//getting the word from
}
}

Example from a fail:

word:

Klavierkonzert

the array:

[1, 0, 0, 0, 3, 0, 2, 0, 1, 0, 0, 0, 0, 3, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 1]

the should be:

[1, 0, 0, 0, 2, 0, 0, 0, 1, 0, 2, 1, 0, 1, 1, 0, 0, 2, 0, 1, 0, 1, 0, 0, 0, 1]

I don't know why this is happening as the word gets shown correctly with System.out.println();. So if I've done anything wrong let me know.

Using two URL.openStream() calls is actually doing two calls to the website, thus recovering two different words.

Do only a single URL.openStream()call, and place the result in a variable. Use that variable for all your operations and you should achieve the desired outcome.

Still an answer for some pitfalls:

• The German alphabet consist of more than 26 ASCII letters.
• German nouns start with an Uppercase letter (like Ü).
• The site sends the text in some encoding, this case in UTF-8.

So:

    String urlString = "https://randomeword.azurewebsites.net/api/word";
URL url = new URL(urlString);
URLConnection conn = url.openConnection();
String contentType = conn.getContentType(); // "text/plain; charset=utf-8"
String charsetName = !contentType.contains("charset=") ? "UTF-8"
: contentType.replaceFirst("^.*charset=([^;]*).*$", "$1");
Charset charset = Charset.forName(charsetName); // Also checks validity.
try (Stream<String> lineStream = new BufferedReader(
new InputStreamReader(url.openStream(), charset)).lines()) {
lineStream.findFirst().ifPresent(word -> {
System.out.println("Word: " + word);
Map<String, Integer> frequencies
= new TreeMap<>(Collator.getInstance(Locale.GERMANY));
word.codePoints()
.mapToObj(Character::toString)
.map(s -> s.toLowerCase(Locale.GERMANY))
.forEach(s -> frequencies.merge(s, 1, Integer::sum));
System.out.println("Frequencies: " + frequencies);
});
}
}