Thread: java pharse searcher

Hi all,
Im trying to create program what is seraching all pharse combination from left to right, from txt file were at least 4 chars. Its working when i have in *.txt file only one word, but im trying to get it work with mutiple words in same time.
forexample: I have string quality: and all combinations are: uali, quali, ality, qualit, uality, lity, ualit, quality, qual, alit. If i have strings quality milk utput should be ---> uali, quali, ality, qualit, uality, lity, ualit, quality, qual, alit,milk etc

 
 
package test;
import java.io.*;
import java.util.*;
 
final public class testSub
{
    public static void main(String...args) throws FileNotFoundException
    {
        read();
 
    }
 
    private static void read() throws FileNotFoundException {
        String string, sub;
 
         ArrayList<String>al=new ArrayList<String>();
       int i = 0, c, length,count = 0;
 
                // Create Scanner object
        Scanner in = new Scanner(new File("words.txt"));
 
 
     // Read a string
      string  = in.nextLine();
 
 
 
      length = string.length();
 
 
 
 
 
        for(c=0;c<length;c++)
        {
 
 
            for(i=1;i<=length-c;i++)
            {
 
 
                sub = string.substring(c,c+i);
                //System.out.println(sub);
                al.add(sub);
 
 
            }
        }
 
 
        HashSet hs = new HashSet();
        hs.addAll(al);
        al.clear();
        al.addAll(hs);
 
        for(String str:al)
        {
 
            if(str.length()>3){
 
 
            System.out.println(str);
            }
 
        }
    }
}

problem is i want to improve this code to process all words in *.txt file.Fornow this code is working correctly when *.txt contains only one word. Forexample:quality. If i put in text file mutiple words: quality woman milk etc. Its not working. I know i need to use split and arrays put i failed .It sould process independently all atleast 4 chars lenghts phrases per word.
Example:quality: all combinations are: uali, quali, ality, qualit, uality, lity, ualit, quality, qual, alit

output output should be

uali
quali
ality
qualit
uality
lity
ualit
quality
qual
alit
milk