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Print alphabets and numerals on screen using Java

Here is the Java code which print the alphabets and numerals. 
  1. import java.io.BufferedReader;  
  2. import java.io.InputStreamReader;  
  3. public class Demo {  
  4.     public static void main(String args[]) throws Exception {  
  5.         BufferedReader br = new BufferedReader(new InputStreamReader(System. in ));  
  6.         System.out.println("1-Want to print capital alphabets..?");  
  7.         System.out.println("2-Want to print small alphabets..?");  
  8.         System.out.println("3-Want to print numerals..?");  
  9.         System.out.println();  
  10.         System.out.print("Select any option: ");  
  11.         int select = Integer.parseInt(br.readLine());  
  12.         switch (select) {  
  13.             case 1:  
  14.                 char CH;  
  15.                 for (CH = 'A'; CH <= 'Z'; CH++)  
  16.                 System.out.println(CH);  
  17.                 break;  
  18.             case 2:  
  19.                 char ch;  
  20.                 for (ch = 'a'; ch <= 'z'; ch++)  
  21.                 System.out.println(ch);  
  22.                 break;  
  23.             case 3:  
  24.                 int num, i;  
  25.                 BufferedReader in = new BufferedReader(new InputStreamReader(System. in ));  
  26.                 System.out.print("Please enter the limit: ");  
  27.                 i = Integer.parseInt(br.readLine());  
  28.                 for (num = 0; num <= i; num++)  
  29.                 System.out.println(num);  
  30.             default:  
  31.                 System.out.println("Wrong choice");  
  32.         }  
  33.     }  
  34. }  
Thank you, keep learning and sharing.