Count Number Of Words In A Given File

import java.util.*; // Provides TreeMap, Iterator, Scanner

import java.io.*; // Provides FileReader, FileNotFoundException

public class CountNumOfWords

{

public static void main(String[] args) 

{ 

TreeMap frequencyData = new TreeMap( );

readWordFile(frequencyData); 

printAllCounts(frequencyData);

}

public static int getCount(String word, TreeMap frequencyData)

{

if (frequencyData.containsKey(word))

{ // The word has occurred before, so get its count from the map

return frequencyData.get(word); // Auto-unboxed

}

else

{ // No occurrences of this word

return 0;

}

}

public static void printAllCounts(TreeMap frequencyData)

{

System.out.println("-----------------------------------------------");

System.out.println(" Occurrences Word");

for(String word : frequencyData.keySet( ))

{

System.out.printf("%15d %s\n", frequencyData.get(word), word);

}

System.out.println("-----------------------------------------------");

} 

public static void readWordFile(TreeMap frequencyData)

{

Scanner wordFile;

String word; // A word read from the file

Integer count; // The number of occurrences of the word

try

{

wordFile = new Scanner(new FileReader("c:/Profile.java"));

}

catch (FileNotFoundException e)

{

System.err.println(e);

return;

}

while (wordFile.hasNext())

{

// Read the next word and get rid of the end-of-line marker if needed:

word = wordFile.next();

// Get the current count of this word, add one, and then store the new count:

count = getCount(word, frequencyData) + 1;

frequencyData.put(word, count);

}

} 

}