Character pattern pyramid program in Java

package demo;
import java.util.Scanner;
public class CharacterPattern
{
 public static void main(String[] args) 
 {
  char ch, r, c;
  System.out.println("Enter last pyramid character  : ");
  Scanner sc = new Scanner(System.in);
  ch = sc.next().charAt(0);
  if (ch >= 'a' && ch <= 'z') {
   ch = (char)(ch - 32);
  }
  for (r = 'A'; r <= ch; r++) {
   for (c = 'A'; c <= r; c++) {
    System.out.print(r + "" + (char)(r + 32) + " ");
   }
   System.out.println();
  }
 }
}

Output:

Enter last pyramid character  : 
e

Aa 
Bb Bb 
Cc Cc Cc 
Dd Dd Dd Dd 
Ee Ee Ee Ee Ee

BUILD SUCCESSFUL (total time: 7 seconds)