You have a Java program that uses the number 3.14159 multiple times for calculations. What is the best practice to improve this code?

hard📝 Application Q15 of 15

Java - Custom Exceptions

AUse a variable named <code>piValue</code> without final keyword

BKeep using the number 3.14159 directly everywhere

CWrite the number as a string and convert it each time

DReplace all occurrences with a constant named <code>PI</code> declared as <code>final double PI = 3.14159;</code>

Step-by-Step Solution

Solution:

Step 1: Identify magic number usage
Repeated use of 3.14159 is a magic number and reduces clarity.
Step 2: Use a named constant
Declaring final double PI = 3.14159; improves readability and maintainability.
Final Answer:
Replace all occurrences with a constant named PI declared as final double PI = 3.14159; -> Option D
Quick Check:
Use constants for magic numbers = Replace all occurrences with a constant named PI declared as final double PI = 3.14159; [OK]

Quick Trick: Use final constants for repeated fixed values [OK]

Common Mistakes:

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