Core Java · interview question
Given a total price as a BigDecimal, what is the best way to apply a 10% discount?
Multiple choiceHardchapter-1-curatedpremiumcore-javanumeric-types-and-money-basics
Answer and explanation
Correct answer
B. TotalPrice.subtract(totalPrice.multiply(new BigDecimal("0.1")))
Why
The subtract and multiply methods of BigDecimal should be used to apply the discount accurately. By multiplying the total by 0.1 and subtracting, you ensure precise arithmetic.
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