Java Program to Display Characters from A to Z using loop

In this program, you'll learn to print English alphabets using for loop in Java. You'll also learn learn to print only uppercased and lowercased alphabets.

Example 1: Display Uppercased A to Z using for loop

public class Characters {

    public static void main(String[] args) {

        char c;

        for(c = 'A'; c <= 'Z'; ++c)
            System.out.print(c + " ");
    }
}

When you run the program, the output will be:

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 

You can loop through A to Z using a for loop because they are stored as ASCII characters in Java.

So, internally, you loop through 65 to 90 to print the English alphabets.

With a little modification you can display lowercased alphabets as shown in the example below.


Example 2: Display Lowercased a to z using for loop

public class Characters {

    public static void main(String[] args) {

        char c;

        for(c = 'a'; c <= 'z'; ++c)
            System.out.print(c + " ");
    }
}

When you run the program, the output will be:

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 

You simply replace 'A' with 'a' and 'Z' with 'z' to display the lowercased alphabets. In this case, interally you loop through 97 to 122.