Long vs BigDecimal: Choosing the Right Java Type for Money

This article compares ten community‑sourced approaches for representing monetary values in Java, explaining when a simple Long, a precise BigDecimal, a String, custom wrappers, Protobuf tricks, leadership directives, AI assistance, or even minimal integer types are appropriate, and why each choice matters.

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Long vs BigDecimal: Choosing the Right Java Type for Money

Ma Wei Says

Feb 18, 2025 · Databases

Which Data Types Should You Use for Money in Java & MySQL? Best Practices

This guide explains why VARCHAR, float, and double are unsuitable for monetary values, and recommends using BIGINT/Long for cent‑level precision or BigDecimal/DECIMAL for higher precision, with practical tips and code examples for Java and MySQL.

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Which Data Types Should You Use for Money in Java & MySQL? Best Practices

Architect's Guide

Nov 26, 2024 · Backend Development

BigDecimal vs Long for Monetary Values: Pros, Cons, and Common Pitfalls

A developer team debates whether to store monetary amounts as BigDecimal or long, discussing experience‑based preferences, past incidents, and asking the community for real‑world pitfalls of each approach.

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BigDecimal vs Long for Monetary Values: Pros, Cons, and Common Pitfalls