Pattern

class PatternDemo
{
    public static void main(String...args)
    {
        char charUptoYouHaveToPrint='G';
        int i,j,a,top=charUptoYouHaveToPrint-64,topp;
        topp=top-1;
        for (i=0;i<=top+1;i++)
        {
            a='A'-1;
            for (j=0;j<top;j++)
            {
                a++;
                if (j>topp-i)
                    System.out.print (" ");
                else
                    System.out.print((char)(a));
            }
            a--;
            for (j=0;j<topp;j++)
            {
                if (j<(i-1))
                    System.out.print(" ");
                else
                    System.out.print((char)(a));
                a--;
            }
            System.out.println();
        }
    }
}