1. Introduction
In Java, characters are represented using Unicode character set. Each character corresponds to a unique Unicode value. The characters ‘A’ to ‘Z’ have Unicode values from 65 to 90. In this blog post, we will write a Java program that uses a loop to display characters from ‘A’ to ‘Z’.
2. Program Steps
1. Define a class named DisplayCharacters.
2. Inside the main method, use a for loop.
3. Initialize the loop variable i to 65 (Unicode value of ‘A’).
4. Continue the loop as long as i is less than or equal to 90 (Unicode value of ‘Z’).
5. In each iteration, cast i to char and print the character.
6. Increment i in each iteration.
3. Code Program
public class DisplayCharacters { // Step 1: Define a class named DisplayCharacters
public static void main(String[] args) { // Main method
// Step 3: Initialize i to 65 and Step 4: Continue as long as i is less than or equal to 90
for (int i = 65; i <= 90; i++) {
// Step 5: Cast i to char and print the character
System.out.print((char) i + " ");
}
}
}
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
4. Step By Step Explanation
– Step 1: The class DisplayCharacters is defined.
– Steps 3 and 4: Inside the main method, a for loop is used, initializing i to 65 and continuing as long as i is less than or equal to 90.
– Step 5: In each iteration of the loop, i is cast to char to convert the Unicode value to a character, which is then printed.
– Step 6: The loop variable i is incremented in each iteration, moving on to the next character in the sequence from 'A' to 'Z'.