This program print alphabets on screen i.e a, b, c, ..., z.
class Alphabets { public static void main(String args[]) { char ch; for( ch = 'a' ; ch <= 'z' ; ch++ ) System.out.println(ch); } }
Download Alphabets program class file.
Output of program:

Printing alphabets using while loop (only body of main method is shown):
char c = 'a'; while (c <= 'z') { System.out.println(c); c++; }
Using do while loop:
char c = 'A'; do { System.out.println(c); c++; } while (c <= 'Z');