Counting number of words in a file

Question

I m having a problem counting the number of words in a file  The approach that I am taking is when I see a space or a newLine then I know to count a word   The problem is that if I have multiple lines between paragraphs then I ended up counting them as words also   If you look at the readFile   method you can see what I am doing    Could you help me out and guide me in the right direction on how to fix this   Example input file  including a blank line    word word word word word  word word word

User · Answer

So easy we can get the String from files by method  getText       public class Main        static int countOfWords String str            if  str equals        str    null                return 0           else              int numberWords   0              for  char c   str toCharArray                      if  c                               numberWords                                                 return   numberWordss

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Just keep a boolean flag around that lets you know if the previous character was whitespace or not  pseudocode follows    boolean prevWhitespace   false  int wordCount   0  while  char ch   getNextChar input       if  isWhitespace ch         if   prevWhitespace          prevWhitespace   true        wordCount              else       prevWhitespace   false

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I think a correct approach would be by means of Regex   String fileContent    lt text from file gt       String   words   Pattern compile    s    split fileContent   System out println  File has     words length     words      Hope it helps  The   s   meaning is in Pattern javadoc

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Take a look at my solution here  it should work  The idea is to remove all the unwanted symbols from the words  then separate those words and store them in some other variable  i was using ArrayList  By adjusting the  excludedSymbols  variable you can add more symbols which you would like to be excluded from the words    public static void countWords          String textFileLocation   c   yourFileLocation       String readWords          ArrayList lt String gt  extractOnlyWordsFromTextFile   new ArrayList lt  gt            excludedSymbols can be extended to whatever you want to exclude from the file      String   excludedSymbols                                         lt       gt      n        String readByteCharByChar           boolean testIfWord   false        try           InputStream inputStream   new FileInputStream textFileLocation           byte byte1    byte  inputStream read            while  byte1    -1                 readByteCharByChar   String valueOf  char byte1               for int i 0 i lt excludedSymbols length i                  if readByteCharByChar equals excludedSymbols i                      if  readWords equals                        extractOnlyWordsFromTextFile add readWords                                     readWords                      testIfWord   true                  break                                          if  testIfWord                    readWords   char byte1                            readByteCharByChar                   testIfWord   false              byte1    byte inputStream read                if byte1    -1  amp  amp   readWords equals                        extractOnlyWordsFromTextFile add readWords                                   inputStream close            System out println extractOnlyWordsFromTextFile           System out println  The number of words in the choosen text file are      extractOnlyWordsFromTextFile size           catch  IOException ioException             ioException printStackTrace

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3 steps  Consume all the white spaces  check if is a line  consume all the nonwhitespace 3  while true       c   inFile read                           consume whitespaces     while isspace c    inFile read         if  c      n    numberLines    continue        while   isspace c             numberChars             c   inFile read              numberWords

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BufferedReader bf  new BufferedReader new FileReader  G   Sample txt             String line bf readLine            while line  null                        String   words line split                   System out println  this line contains    words length    words                line bf readLine

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This can be done in a very way using Java 8   Files lines Paths get file        flatMap str- gt Stream of str split         r n           filter s- gt s length   gt 0  count

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I would change your approach a bit  First  I would use a BufferedReader to read the file file in line-by-line using readLine    Then split each line on whitespace using String split    s   and use the size of the resulting array to see how many words are on that line  To get the number of characters you could either look at the size of each line or of each split word  depending of if you want to count whitespace as characters

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Hack solution  You can read the text file into a String var  Then split the String into an array using a single whitespace as the delimiter StringVar Split         The Array count would equal the number of  Words  in the file   Of course this wouldnt give you a count of line numbers

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You can use a Scanner with a FileInputStream instead of BufferedReader with a FileReader  For example -  File file   new File  sample txt    try Scanner sc   new Scanner new FileInputStream file         int count 0      while sc hasNext             sc next            count          System out println  Number of words      count

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import java io BufferedReader  import java io FileReader   public class CountWords        public static void main  String args    throws Exception           System out println   Counting Words                  FileReader fr   new FileReader   c   Customer1 txt                   BufferedReader br   new BufferedReader  fr               String line   br readLin            int count   0         while  line    null              String   parts   line split                 for  String w   parts                          count                                  line   br readLine                             System out println count

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File Word-Count  If in between words having some symbols then you can split and count the number of Words   Scanner sc   new Scanner new FileInputStream new File  Input txt              int count   0          while  sc hasNext                   String   s   sc next   split  d       -                   for  int i   0  i  lt  s length  i                      if   s i  isEmpty                         System out println s i                        count                                                                    System out println  Word-Count     count

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The below code supports in Java 8    Read file into String  String fileContent new String Files readAlBytes Paths get  MyFile txt    StandardCharacters UFT 8       Keeping these into list of strings by splitting with a delimiter  List lt String gt  words   Arrays asList contents split    PL       int count 0  for String x  words    if x length   gt 1  count       sop x

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This is just a thought  There is one very easy way to do it  If you just need number of words and not actual words then just use Apache WordUtils  import org apache commons lang WordUtils   public class CountWord    public static void main String   args        String str    Just keep a boolean flag around that lets you know if the previous character was whitespace or not pseudocode follows        String initials   WordUtils initials str        System out println initials         so number of words in your file will be     System out println initials length

[java] Counting number of words in a file

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