Additional Notes
Why is using double for product prices risky in production code?
Track: Java
Topic: Core Java
Focus: Variables and Data Types
Java: Variables and Data Types
Answer
double can introduce rounding errors because binary floating-point cannot represent many decimal values exactly.
A value like 19.99 may look exact in source code, but binary floating-point can produce tiny rounding drift during arithmetic. That is acceptable for a quick beginner demo, but production money logic should use BigDecimal so totals and discounts stay exact.
A value like 19.99 may look exact in source code, but binary floating-point can produce tiny rounding drift during arithmetic. That is acceptable for a quick beginner demo, but production money logic should use BigDecimal so totals and discounts stay exact.
Topics: Core Java Java Variables and Data Types