Java program to check that the input character is an alphabet or not

Java program to check that the input character is an alphabet or not using if-else and
java ternary operator

1. public class Alphabet {
2.  
3.  
4. /**
5.   * Check that input character is alphabet or not
6.   *
7.   * @param args
8.   */
9. public static void main(String[] args) {
10.  
11. // using java if-else
12. System.out.println("==== using java if-else ===");
13. checkInputChar('a'); // Output -> Alphabet
14. checkInputChar('A'); // Output -> Alphabet
15. checkInputChar('5'); // Output -> Non alphabet
16. checkInputChar('#'); // Output -> Non alphabet
17.  
18. // using java ternary operator
19. System.out.println("==== using java ternary operator ===");
20. checkInputCharUsingTernary('a'); // Output -> Alphabet
21. checkInputCharUsingTernary('A'); // Output -> Alphabet
22. checkInputCharUsingTernary('5'); // Output -> Non alphabet
23. checkInputCharUsingTernary('#'); // Output -> Non alphabet
24. }
25.  
26. // using java if-else
27. private static void checkInputChar(Character ch) {
28. if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z')) {
29. System.out.println("Alphabet");
30. } else {
31. System.out.println("Non alphabet");
32. }
33. }
34.  
35. // using java ternary operator
36. private static void checkInputCharUsingTernary(Character ch) {
37. String result = (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ?

38. "Alphabet" : "Non alphabet";

39. System.out.println(result);
40. }
41.  
42. }

Output

==== using java if-else === Alphabet Alphabet Non alphabet Non alphabet ==== using java ternary operator === Alphabet Alphabet Non alphabet Non alphabet