findPerimeterHexagon()

Step 1: Understanding the problem

A hexagon is a polygon with six sides. The perimeter of a hexagon (or any polygon) is simply the sum of the lengths of its sides. For a regular hexagon (one with all sides equal), this can be calculated by multiplying the length of one side by six.

So, the first thing you need to do is to create a function which accepts the length of one side as an argument.

public static double findPerimeterHexagon(double sideLength) {
    // Perimeter calculation will go here
}

Step 2: Calculating the perimeter

As stated above, the perimeter of a regular hexagon is the length of one side times six. Implementing this calculation in our function is straightforward.

public static double findPerimeterHexagon(double sideLength) {
    return sideLength * 6;
}

Step 3: Testing the function

With the function implemented, the next step is to test it. It's important to test your functions with various inputs to ensure they work correctly under all circumstances.

public static void main(String[] args) {
    System.out.println(findPerimeterHexagon(5));  // Should print '30.0'
    System.out.println(findPerimeterHexagon(10));  // Should print '60.0'
}

Step 4: Refactoring and streamlining

Our function seems to be working perfectly. However, before we finish, it's always a good idea to review the code and see if any improvements can be made. In this case, the code seems pretty optimized, so no refactoring is really necessary.

Conclusion

This article has demonstrated how to create a simple function in Java to calculate the perimeter of a regular hexagon. The function follows standard mathematical principles, while also demonstrating good coding practice by being simple, efficient, and easy to read.

Here is the full code:

public class Main {
    public static double findPerimeterHexagon(double sideLength) {
        return sideLength * 6;
    }

    public static void main(String[] args) {
        System.out.println(findPerimeterHexagon(5));  
        System.out.println(findPerimeterHexagon(10));  
    }
}