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Java Program to Display Alphabets (A to Z) Using Loops


Tutorialsrack 06/06/2021 Java

In this java program, you’ll learn how to display or print uppercase alphabets(A to Z) and lowercase alphabets(a to z) using Loops. This post explains the three possible ways to display or print alphabets using loops: for, while,  and do..while

Here are the examples to display the alphabets using all three loops in java

Example 1: Using For Loop

In this example, we are using two for loops, one is used to print upper case letters (A to Z) and another to print lower case letters(a to z) using for loop.

Example 1: Using For Loop
// Java Program to Display Alphabets (A to Z) Using While Loop

public class JavaPrograms {

	public static void main(String[] args) {

		char character;

		// Display Upper Case Alphabets
		System.out.print("Upper Case Alphabets Displayed \n");
		for (character = 'A'; character <= 'Z'; ++character)
			System.out.print(character + " ");

		System.out.print("\n\n");// move to next line

		// Display Lower Case Alphabets
		System.out.print("Lower Case Alphabets Displayed \n");
		for (character = 'a'; character <= 'z'; ++character)
			System.out.print(character + " ");
	}
}
Output

Upper Case Alphabets Displayed 

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 

 

Lower Case Alphabets Displayed 

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 

Example 2: Using While Loop

In this example, we are using two while loops, one is used to print upper case letters (A to Z) and another to print lower case letters(a to z) using a while loop.

Example 2: Using While Loop
// Java Program to Display Alphabets (A to Z) Using While Loop

public class JavaPrograms {

	public static void main(String[] args) {

		char character = 'A';

		// Display Upper Case Alphabets
		System.out.print("Upper Case Alphabets Displayed \n");
		while (character <= 'Z') {
			System.out.print(character + " ");
			character++;
		}

		System.out.print("\n\n");// move to next line

		// Display Lower Case Alphabets
		character = 'a';
		System.out.print("Lower Case Alphabets Displayed \n");
		while (character <= 'z') {
			System.out.print(character + " ");
			character++;
		}
	}
}
Output

Upper Case Alphabets Displayed 

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 

 

Lower Case Alphabets Displayed 

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 

Example 3: Using do While Loop

In this example, we are using two do..while loops, one is used to print upper case letters (A to Z) and another to print lower case letters(a to z) using do..while loop.

Example 3: Using do While Loop
// Java Program to Display Alphabets (A to Z) Using Do While Loop

public class JavaPrograms {

	public static void main(String[] args) {

		char character = 'A';

		// Display Upper Case Alphabets
		System.out.print("Upper Case Alphabets Displayed \n");
		do {
			System.out.print(character + " ");
			character++;
		} while (character <= 'Z');

		System.out.print("\n\n");// move to next line

		// Display Lower Case Alphabets
		character = 'a';
		System.out.print("Lower Case Alphabets Displayed \n");
		do {
			System.out.print(character + " ");
			character++;
		} while (character <= 'z');
	}
}
Output

Upper Case Alphabets Displayed 

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 

 

Lower Case Alphabets Displayed 

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 


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