N-Queen Problem

import java.io.DataInputStream;  

import java.math.*;  

class nQueens

{

                public static void main(String arg[])

                {

                                int n=0;

                                int x[ ]= new int[8];

                                int count=0;

                                DataInputStream in = new DataInputStream(System.in);

                                System.out.print("\n\t\t\t\tN-Queens Problem\n\n");

                               

                try

                                {

                                    System.out.print("Enter value of n  : ");

                   n = Integer.parseInt(in.readLine());

                                }

                               

                                catch(Exception e) {   System.out.print("I/O Error");   }

                                nqueens(1,n,x,count);