Word, Character And Line Count Program In Java

In this blog, I am going to explain the program for word, character and line count in Java.

Introduction

• In this blog, I am going to explain the program for word, character and line count in Java. 

Software Requirements

• Java, Notepad.

Program

import java.io.*;
public class WordCount {
 private static void linecount(String fName, BufferedReader in ) throws IOException {
  long numChar = 0;
  long numLine = 0;
  long numWords = 0;
  String line;
  do {
   line = in .readLine();
   if (line != null) {
    numChar += line.length();
    numWords += wordcount(line);
    numLine++;
   }
  } while (line != null);
  System.out.println("File Name: " + fName);
  System.out.println("Number of characters: " + numChar);
  System.out.println("Number of words: " + numWords);
  System.out.println("Number of Lines: " + numLine);
 }
 private static void linecount(String fileName) {
  BufferedReader in = null;
  try {
   FileReader fileReader = new FileReader(fileName); in = new BufferedReader(fileReader);
   linecount(fileName, in );
  } catch (IOException e) {
   e.printStackTrace();
  }
 }
 private static long wordcount(String line) {
  long numWords = 0;
  int index = 0;
  boolean prevWhiteSpace = true;
  while (index < line.length()) {
   char c = line.charAt(index++);
   boolean currWhiteSpace = Character.isWhitespace(c);
   if (prevWhiteSpace && !currWhiteSpace) {
    numWords++;
   }
   prevWhiteSpace = currWhiteSpace;
  }
  return numWords;
 }
 public static void main(String[] args) {
  long numChar = 0;
  long numLine = 0;
  String line;
  try {
   if (args.length == 0) {
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    line = in .readLine();
    numChar = line.length();
    if (numChar != 0) {
     numLine = 1;
    }
    System.out.println("Number of characters: " + numChar);
    System.out.println("Number of words: " + wordcount(line));
    System.out.println("Number of lines: " + numLine);
   } else {
    for (int i = 0; i < args.length; i++) {
     linecount(args[i]);
    }
   }
  } catch (IOException e) {
   e.printStackTrace();
  }
 }
}

Output