Brute Force Pattern Matching

import java.util.*;

class Pattern

{

                 int brute(String text,String pattern)

                {

                                int n = text.length();    //n is the length of text

                                int m = pattern.length(); // m is length of pattern

                                int j;

                                for(int i=0; i <= (n-m); i++)

                                {  

                                                j = 0;

                                                while ((j < m) && (text.charAt(i+j) == pattern.charAt(j)) )  

                                                j++;  

                                                if (j == m)  

                                                                return i;   // match at i

                                }

                                return -1;   // no match

                }// end of brute()

}

public class BruteForce

{

                public static void main(String args[])

                {