ASCII value of character

This Java code example demonstrates how to find and print the ASCII value of a given character. The ASCII (American Standard Code for Information Interchange) value is a numerical representation of characters used in computers and other devices. This example highlights the use of input handling, character manipulation, and basic type casting in Java.

Code Example

import java.util.Scanner;

class AsciiValueOfCharacter {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        
        // Prompt user for a character input
        System.out.print("Enter a character: ");
        char ch = scanner.next().charAt(0);
        
        // Get ASCII value of the character
        int asciiValue = (int) ch;
        
        // Print the ASCII value
        System.out.println("The ASCII value of '" + ch + "' is: " + asciiValue);
        
        scanner.close();
    }
}

Code Explanation

public static void main(String[] args)

The main method executes the program and contains the logic for getting and printing the ASCII value of a character.

public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    
    // Prompt user for a character input
    System.out.print("Enter a character: ");
    char ch = scanner.next().charAt(0);
    
    // Get ASCII value of the character
    int asciiValue = (int) ch;
    
    // Print the ASCII value
    System.out.println("The ASCII value of '" + ch + "' is: " + asciiValue);
    
    scanner.close();
}

Creating Scanner Object

• Scanner scanner = new Scanner(System.in); creates a Scanner object to read input from the user.

Prompting for Character Input

• System.out.print("Enter a character: "); prompts the user to enter a character.
• char ch = scanner.next().charAt(0); reads the next token of input as a string and extracts the first character from it.

Getting ASCII Value

• int asciiValue = (int) ch; casts the character ch to an integer, which gives its ASCII value.

Printing ASCII Value

• System.out.println("The ASCII value of '" + ch + "' is: " + asciiValue); prints the character and its ASCII value.

Closing Scanner

• scanner.close(); closes the Scanner object to free up resources.