public class StringTester {
// This program reads a text from a file, makes an array 
// 'words' from the individual words in the file, and 
// displays those words and the word count.

   static String [] words = new String [500];
   static int nWords = 0;

   static String readText(String fileName) {
   // read an entire text file, concatenate the lines together
   // to form one long string and return that string.  Adds an
   // extra blank between lines, and uses pseudoKeyboard class.
      pseudoKeyboard k = new pseudoKeyboard(fileName);
      String temp = "";
      String line = k.readString();   // a single line of text
      while (!k.eof()) {
         temp = temp + line + " "; 
         line = k.readString();       
      }      
      return temp;
   }

   static String deleteExtraBlanks (String s) {
   // compresses s by deleting all "extra" blanks in it.  That
   // is, it leaves every adjacent pair of words with exactly 1  
   // blank between them
      int i = s.indexOf("  ");  // find a pair of blanks
      if (i < 0)                   // base case -- none there
         return s;
      else                         // recursive case; delete a blank
         return s.substring(0, i) + deleteExtraBlanks(s.substring(i+1));   
   }
   
   static String firstWord (String s) {
   // return the first word in the text s.  If there is none, return ""
  
      // pass over leading blanks; look for nonblank
      int i = 0;
      while (i < s.length() &&  s.charAt(i) == ' ') 
         i = i + 1;    
      // now i is at the beginning of the word, or else there
      // is no next word in s.
      if (i >= s.length())
         return "";
      else        // end of the word is at the blank that trails it
         return s.substring(i, s.indexOf(" ", i));
   }
   
   static void makeArray (String s) {
   // build the array 'words' out of the text and set the value
   // of the word count variable 'nWords'.
      nWords = 0;
      // find the first word in s
      String t = firstWord(s);
      while (t!="") {
            // if it's there, insert it in the array 'words',
         words[nWords] = t;
         nWords = nWords + 1;
            // remove it from s
         s = s.substring(t.length() + 1);
            // and get the next word
         t = firstWord(s);
      }
   }
   
   static void displayWords () {
   // Display all the words in a list, one word per line.
      for (int i=0; i<nWords; i++)
          System.out.println(words[i]);
   }
   
   public static void main (String[] argv) {
 
	  // Locate a text with the user's help
      System.out.println("Enter the name of a text file: ");
      String fileName = Keyboard.readString();
      pseudoKeyboard k = new pseudoKeyboard(fileName);
      
      // read and display the text line by line
      System.out.println("\nOriginal text:");
      String s = "";
      String t = k.readString();
      while (!k.eof()) {
         System.out.println(t);
         s = s + t + " ";
         t = k.readString();
      } 
      
      // Delete all extra blanks from s, make the array 'words' 
      // and establish the word count nWords for this array
      s = deleteExtraBlanks(s);
      System.out.println ("\nText without extra blanks:\n" + s);
      makeArray(s);
      
      // Now display the words in the text in a column
      System.out.println("\nWord list:");      
      displayWords();
      
      // Now compute and display the word count
      System.out.println("\nWord count for the text is: " + nWords);              
   }

}