Calculate The Pyramid Program Using Java

            /*  PYRAMID   */

import java.io.*;
import java.lang.Math;

class ssva19
{
    public static void main(String arg[]) throws IOException
    {
        int i,j,k,m,n;
        BufferedReader obj=new BufferedReader(new InputStreamReader(System.in));
        System.out.println("\n        PYRAMID ");
        System.out.println("        -------");
        System.out.print("\nENTER THE PYRAMID RANGE : ");
        n=Integer.parseInt(obj.readLine());
        System.out.println("\n");
        m=n;
        for(i=1;i<=n;i++)
        {
        m--;
            for(j=m;j>=1;j--)
                System.out.print(" ");
                for(j=1,k=i%10;j<=i;j++,k++)
                    System.out.print(Math.abs(k%10));
                for(j=2,k=k-2;j<=i;j++,k--)
                System.out.print(Math.abs(k%10));
                System.out.println("\n");
        }
    }

}