Help with String

I have written a program that asks the user to input a five-letter word and then will return all valid three letter words from the original word. My problem is that I am getting nothing to print, I don't know if I am doing the comparison properly.

Code:

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import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.Scanner;

public class ThreesFromFive
{

        public static void rearrangeAndOuput() throws FileNotFoundException
        {
                String word = new String();
                String threeLetterWord = new String();
                StringBuffer wordBuffer = new StringBuffer();
                Scanner input = new Scanner(System.in);
                Scanner inFile = null;
               
                //0pens file to be read
                try
                {
                        inFile = new Scanner(new FileReader("../JavaHomework/chapt29_18/threeletterwords.txt"));
                }//end try
               
                catch (FileNotFoundException e)
                {
                        System.err.println("File not found.");
                        System.exit(1);
                }//end catch
               
                System.out.print("Enter a five letter word:");
                word = input.next();
                if (word.length() != 5)
                {
                        System.out.print("Please enter a five letter word:");
                        word = input.next();
                }
               
                System.out.print("The three letter words that can be made from\n");
                System.out.print("the word you typed in is:\n");
               
                //create three letter words
                for (int i = 0; i < 5; i++)
                {
                       
                        for (int j = 0; j < 5; j++)
                        {
                               
                                for (int k = 0; k < 5; k++)
                                {
                                        //create new three letter word
                                        wordBuffer.append(word.charAt(i));
                                        wordBuffer.append(word.charAt(j));
                                        wordBuffer.append(word.charAt(k));
                                        threeLetterWord = wordBuffer.toString().toLowerCase();
                                       
                                        while (inFile.hasNext())
                                        {
                                       
                                                //check to see if word is valid three letter word
                                                if (threeLetterWord.equals(inFile.next()))
                                                        System.out.printf("%s\n", threeLetterWord);
                                               
                                        }
                                       
                                        //re-initialize wordBuffer to create new word
                                        wordBuffer = new StringBuffer();
                                       
                                }//end for
                               
                        }//end for
                       
                }//end for
               
        }//end rearrangeAndOutput
       
       
        public static void main(String[] args) throws FileNotFoundException
        {
                rearrangeAndOuput();
        }

}

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Thanks
Felissa:p

Instead of constructing all the permutations of 3 letter words instead can you not scan every word of the file containing 3 letter words and simply check if the 5 letter input contains all the characters in the 3 letter word.

Code:

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for each 3 letter word : word3
  for each character in word3 : ch
    check if input5 contains ch
  if all the characters of word3 are present in input5 print it

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Greetings.
Eric

Thank you for the suggestion, it didn't work though. I think it has something to do with the way I'm reading in the file or the way I'm comparing the strings.

Greetings.
Felissa:p