How do I Convert a Character to its ASCII Value in Java?

Converting Characters to ASCII Numeric Values in Java

In the realm of programming, working with character data frequently requires the ability to determine their ASCII numeric values. Let's consider a specific scenario:

Suppose we have a String named "admin" and we extract the first character into another variable named "charValue" using substring operations:

<code class="java">String name = "admin";
String charValue = name.substring(0, 1); // charValue = "a"</code>

Our goal is to determine the ASCII numeric value of "a" (which is 97).

Solution: Casting Character to ASCII

A straightforward approach to convert a character to its ASCII value in Java is to cast the character to the int data type. For example:

<code class="java">char character = 'a';
int ascii = (int) character;</code>

In your case, you would first obtain the individual character from the string using charAt before casting it to an int:

<code class="java">char character = name.charAt(0); // This gives the character 'a'
int ascii = (int) character; // ascii is now 97.</code>

Implicit Casting for Readability

Although explicit casting is not strictly necessary, adding it can enhance code readability. However, in most cases, Java allows implicit casting for convenience:

<code class="java">int ascii = character; // Even this will do the trick.</code>

Utilizing these techniques, you can seamlessly convert characters to their corresponding ASCII numeric values in Java, facilitating various text-related operations.

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