Display the Alphabet A to Z in Java

Exercise:

Write a Java Program to display uppercase and lowercase characters from A to Z using loop.

1.Display uppercase letters

Click Here to View the Solution!
public class DisplayCharacters {
  
     public static void main(String[] args) {
  
         char alphabet;
  
         for(alphabet = 'A'; alphabet <= 'Z'; ++alphabet)
             System.out.print(alphabet + " ");
     }
} 
Click Here to View the Output!
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 
Click Here to View the Explanation!
  • This program is used for displaying all the characters (uppercase letters) from A to Z by using a for loop.
  • Initially, only a single character variable alphabet is initialized.
  • A for loop is set by giving it a condition of iterating from the ASCII value of A till the ASCII value of Z. This looping through characters is possible because the characters are stored in the form of ASCII values in Java.
  • The increment in the character variable continues along with the printing of the characters until Z is reached. The loop initiates from the value 65 since ASCII value of A is 65 and up to 90 which is the ASCII value of Z.

2.Display Lowercase letters

Click Here to View the Solution!
public class DisplayCharacters {
  
     public static void main(String[] args) {
  
         char alphabet;
  
         for(alphabet = 'a'; alphabet <= 'z'; ++alphabet)
             System.out.print(alphabet + " ");
     }
} 
Click Here to View the Output!
a b c d e f g h i j k l m n o p q r s t u v w x y z 
Click Here to View the Explanation!
  • This program is used for displaying all the characters (lowercase letters) from a to z by using a for loop.
  • Initially, only a single character variable alphabet is initialized.
  • A for loop is set by giving it a condition of iterating from the ASCII value of a till the ASCII value of z. This looping through characters is possible because the characters are stored in the form of ASCII values in Java.
  • The increment in the character variable continues along with the printing of the characters until z is reached. The loop initiates from the value 65 since ASCII value of a is 97 and up to 122 which is the ASCII value of z.

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