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There are things you can do in Java you rarely see, generally because there is no use for it. However, there are some unusual things in Java that could be surprisingly useful.
Chronicle Software uses a number of different usual patterns in its low-level libraries most developers wouldn’t generally come across.
Java is a general-purpose programming language with many alternatives to solving a certain problem. However, there are best practices that need to be followed, and there are some bad practices out there as well that are still commonly used.
One of these common bad practices is using exceptions as the control flow. This should be avoided for two reasons: It reduces the performance of your code as a response per unit time, and it makes your code less readable.
My first draft of hierarchy traversing component got some serious feedback, and it's time to make some changes before moving on to the next challenges. Hierarchy traverser is not optimal yet as it uses tail-call recursion and it's easy to run to Stack Overflow with it. This blog post solves this problem and prepares for the next challenges like node cache and continue-from-given-node.
As reader Ants pointed out then, .NET runtime doesn't always optimize tail-call recursion and using this simple piece of code, it's possible to run to Stack Overflow fast.
Consider the following code:
def max(m: int, n: int) -> int:
if m >= n:
return m
elif n >= m:
return n
else:
raise Exception(f"Design Error: {vars()}")