Printing a Circular Matrix(Spiral Matrix)

import java.io.*;
class Circular
    {
        public static void main(String args[])throws IOException
        {
            BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
            System.out.print("Enter the number of elements : ");
            int n=Integer.parseInt(br.readLine());

            int A[][]=new int[n][n];
            int k=1, c1=0, c2=n-1, r1=0, r2=n-1;

            while(k<=n*n)
                {
                    for(int i=c1;i<=c2;i++)
                    {
                            A[r1][i]=k++;
                    }

                    for(int j=r1+1;j<=r2;j++)
                    {
                            A[j][c2]=k++;
                    }

                    for(int i=c2-1;i>=c1;i--)
                    {
                            A[r2][i]=k++;
                    }

                    for(int j=r2-1;j>=r1+1;j--)
                    {
                            A[j][c1]=k++;
                    }

                 c1++;
                 c2--;
                 r1++;
                 r2--;
                }

            System.out.println("The Circular Matrix is:");
            for(int i=0;i<n;i++)
                {
                    for(int j=0;j<n;j++)
                        {
                                System.out.print(A[i][j]+ "\t");
                        }
                     System.out.println();
                }
        }
}