Member Avatar for stopah2008

Could someone help java code to read number of lines, words and characrters in paragragh .

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Building on 's question and the quick ideas from and , here is a concise, modern and robust approach that avoids brittle splitting on a single character and correctly handles Unicode. It counts lines, words (using locale-aware boundaries), and characters (counting Unicode code points so surrogate pairs like emoji are not mis-counted).

import java.text.BreakIterator;

public static class Counts {
    public final long lines, words, chars;
    public Counts(long lines, long words, long chars) { this.lines = lines; this.words = words; this.chars = chars; }
}

public static Counts analyzeText(String text) {
    long lines = text.isEmpty() ? 0 : text.lines().count();            // Java 11+; for older Java use text.split("\\R", -1).length
    long chars = text.codePoints().count();                            // counts Unicode code points
    long words = countWords(text);
    return new Counts(lines, words, chars);
}

private static long countWords(String text) {
    BreakIterator itr = BreakIterator.getWordInstance();
    itr.setText(text);
    int start = itr.first(), end;
    long count = 0;
    while ((end = itr.next()) != BreakIterator.DONE) {
        String token = text.substring(start, end);
        if (token.codePoints().anyMatch(Character::isLetterOrDigit)) count++;
        start = end;
    }
    return count;
}

Notes and quick troubleshooting:

  • Newline handling: use String.lines() (Java 11+) or split on "\R" to handle all line separators without manually scanning for "\n" or "\r\n".
  • Word rules: BreakIterator is locale-aware and avoids counting punctuation as words; adjust token checks if hyphenated words or apostrophes must be treated specially.
  • Characters vs grapheme clusters: codePoint count is usually correct for most needs; to count user-perceived characters (grapheme clusters) use BreakIterator.getCharacterInstance(locale).
  • For very large files, stream the input (Files.lines or a Reader) and update counters per line to avoid loading everything into memory.
  • For frequency counts (top words) use a Map and sort entries or a PriorityQueue; prefer library sorting over manual bubble-sort as suggested, and avoid posting uncontextualized external links per .

Recommended Answers

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Member Avatar for javaAddict

Could someone help java code to read number of lines, words and characrters in paragragh .

You can count how may times the \n appears in the paragraph for lines.
For characters the total length of the paragraph String minus the characters: " ", " ", " ", ...
For words user String.split(" "); and count the length of the array minus the elements where you might an empty String with more than one length.

Or you can use regular expressions.

Member Avatar for yilmazhuseyin

Yes that is a good way to do it. but when you do that you could use StringTokenizer class. it seperates a string to tokens. just change the delimeters to count sentences , lines ,words etc. I hope that could help.

note:
every sencence finish with "."
every line finish with "\n"
every word finish with "\n" , " " , "." or ","

Member Avatar for JamesCherrill

Daniweb member rules include
"Do ensure that all posts contain relevant content and substance and are not simply vehicles for external links"
We also discourage people from simp/ky posting complete solutions.In future please help by pointing people in the right direction.

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