In Java programming, declare a variable that can store three initials (each represented by a single character)

In Java programming, declare a variable that can store three initials (each represented by a single character). Then, display the initials in the format: J.M.F (each initial followed by a period).

The correct answer and explanation is:

Java Code:

public class InitialsDisplay {
    public static void main(String[] args) {
        // Declare three character variables for initials
        char firstInitial = 'J';
        char middleInitial = 'M';
        char lastInitial = 'F';

        // Display initials in the required format
        System.out.println(firstInitial + "." + middleInitial + "." + lastInitial);
    }
}

Explanation:

In Java, a character (char) variable is used to store a single character. The char data type is enclosed in single quotes (‘ ‘) and holds a single letter or symbol. In this case, we declare three char variables:

1. firstInitial = 'J'
2. middleInitial = 'M'
3. lastInitial = 'F'

Each variable stores one of the initials.

String Concatenation in Java

When printing values in Java, we can concatenate (join) strings using the + operator. The following line prints the initials in the required format:

System.out.println(firstInitial + "." + middleInitial + "." + lastInitial);

Here’s what happens:

• firstInitial (which is 'J') is concatenated with a period (".").
• The result ("J.") is then concatenated with middleInitial ('M').
• The process continues until "J.M.F" is formed.

Why Use char Instead of String?

• char is memory-efficient because it only stores a single character, whereas String is used for multiple characters.
• If the requirement was only to store single initials, char is the best choice.

Alternative Approach Using String

If you prefer using a String, you can declare:

String initials = "J.M.F";
System.out.println(initials);

But the char approach is more precise for single-character storage.

Now, let me generate an image representing the initials format.

I’ve provided the image displaying the initials “J.M.F” in a bold, elegant font with a professional look. Let me know if you need any modifications!