Magic Square in JAVA

/**

 * Magic Square

 * version.... 1.0.0

 * Copyright: ECP-II

 * author@ Ishwar ECP-II

 * Asst: ECP-II

 * Date: 10:06 AM -- 30/11/2017

 * 

 *  Description:

 *  This program is a first level of Artificial Intelligence;

 *  When you give an odd input you will be provided with a square [n x n] in which all the rows, columns and diagonals, 

 *  when summed up, gives the same result; 

 *  Enjoy the Program ;)

 */

import java.util.Scanner;

//Defining class MagicSquare

public class MagicSquare {

int n;

//Method to get input from the User

void input(){

//Creating object for class Scanner

@SuppressWarnings("resource")

Scanner sc=new Scanner(System.in);

System.out.println("*******************************************************************");

System.out.println("*****************************MAGIC SQUARE**************************");

System.out.println("*******************************************************************\n\n");

System.out.println("Enter an ODD number: ");

//Storing the input given by user in the instance variable 'n' using scanner object

n=sc.nextInt();

}

           

//Method to create The Magic Square

void magic(){

    System.out.println("\f ");

System.out.println("Here U GO: -\n");

System.out.println("*******************************************************************\n");

        //Declaring method variables 'r' for rows, 'c' for columns and 's' for sums

int r,c,s=0;

//Initializing 2D array 'a' with size n x n 

int a[][] = new int[n][n];

//Initializing rows and columns to the top middle element 

r=0;

c=n/2;

for(int i=1;i<=n*n;i++){

//Storing the elements in the matrix one by one

a[r][c]=i;

r=r-1;//up

if(r<0)

r=r+n;//returning to the last row

c=c+1;//right

if(c>=n)

c=c-n;//returning to the first column

    //Condition to check if there is already an element in the cell

if(a[r][c]!=0){

//Placing the element down the previous element 

r=r+2;

    c=c-1;

    if(r>=n)

r=r-n;//returning to the first row

    if(c<0)

c=c+n;//returning to the last column

}

}

//Printing the array in a structured Layout

for(int i=0;i<n;i++){

for(int j=0;j<n;j++){

System.out.print(a[i][j]+"\t");

}

System.out.println("\n\n");

}

System.out.println("\n*******************************************************************");

//Calculating the Sum of Rows/Columns/Diagonals

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

s=s+a[0][i];

        System.out.println("\n\n*******************************************************************");

System.out.println("Sum of the Rows/Columns/Diagonals : "+s);

        System.out.println("*******************************************************************");

}

public static void main(String args[]){

//Creating object for the class MagicSquare

MagicSquare m=new MagicSquare();

m.input();//Calling input Method

m.magic();//Calling magic Method

}

}