Java code to convert given input values from KM to Meter, Meter to Centimetres, etc. OOP approach using the strategy design pattern Step 1: Define an interface. … Read more...

FP – calculate the invoice price Invoice Price = (markedPrice * (100 – discountRate)/100) + deliveryCharge Example “f.andThen(g)” is the composition of functions. This can be described as g(f()) where...

Current Balance = Initial Amounts + Credits – Debits OOP approach using the builder design pattern Creating a constructor to take three BigDecimal values is NOT only readable, … Read...

int result = input / divideBy will throw an unchecked exception if divideBy = 0. OOP error handling by throwing exceptions In OOP errors are handled by throwing & …...

FP error handling – checked exceptions The code below breaks the flow of execution as the input “ABC” throws a checked exception – “NumberFormatException”. Outputs: What if you want to...

handle(…) returns a result or an exception A dummy exception is thrown from “f” to demonstrate an exceptional scenario. The “java.util.concurrent.ExecutionException” potentially thrown by f.get(), g.get(), and h.get() is a...