Puzzle Solver

[FUTURECompEng]

I am going to be honest here, I am completley lost on trying to figure this out. I am trying to create a sudoku solver using sat4j for a 9x9 puzzle. I am trying to read a partially filled board and, by using a Satisability solver it finds a legal assignment to the empty squares (if possible). If such an assignment is impossible, the program says so; otherwise, it prints the original board and a solution to the terminal.

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Scanner;


public class sudoku {
        private int dim;
        private int size;
        private int [][] box;

        // attempt at creating clauses to be stored in an array and then so sat4j can solve it
        // I think that is what I should do
        public sudoku (int dim){
            final int n=3;
            final int[][] field = new int[n*n][n*n];
            for (int i=0;i<n*n;i++)
                for(int j=0;j<n*n;j++)
                    field[i][j] = (i*n + i/n +j)%(n*n)+1;
            /*
            this.dim=dim;
            size = dim*dim;
            box = new int[size][size];

            for(int i=0;i<size;i++)//row
                for(int j=0;j<size;j++)//column
                    for(int k = 0;k < size;k++){//box

                    }
                    */
        }


     public static void main(String []args) throws FileNotFoundException {

            // TODO Auto-generated method stub

            Scanner fileIn = null;
            Scanner input = new Scanner(System.in);


            File filename = new File ("solvesampleinput.txt");




            try {
                    fileIn = new Scanner(new FileInputStream(filename));


                }
            catch (FileNotFoundException e)
            {
                System.out.println("File Not Found");
                System.exit(0);
            }
            //

            System.out.println("opened success");
            System.out.println(fileIn.nextLine());
            System.out.println(fileIn.nextLine());
            System.out.println(fileIn.nextLine());
            System.out.println(fileIn.nextLine());      
            System.out.println(fileIn.nextLine());
            System.out.println(fileIn.nextLine());
            System.out.println(fileIn.nextLine());
            System.out.println(fileIn.nextLine());

     }
    //      }
    //      }
    //      }

//   public sudoku(Scanner input){
        // int [][] board = new int [9][9];

        //Another attempt
            public static boolean solve(int[][] board) {  

                // Find a position that's still empty.  
                for (int x=0; x<9; x++) {  
                    for (int y=0; y<9; y++) {  
                if (board[x][y] == 0) {  
                    // Try each possibile value in this space  
                    // and see if the rest of the puzzle can be filled in.  
                    for (board[x][y]=1; board[x][y]<=9; board[x][y]++) {  



                     }
                    }
                   }
                  }
                return false;
            }

        }

I greatly appreciate any help. I dont need to understand what Sat4j is doing since I already know it is just coding this is tearing by brain apart.