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Description: 「Java学习+面试指南」一份涵盖大部分 Java 程序员所需要掌握的核心知识。准备 Java 面试，首选 JavaGuide！ - JavaGuide/docs/java/basis/bigdecimal.md at main · smallPlan/JavaGuide

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https://github.com/smallPlan/JavaGuide/blob/main/docs/java/basis/bigdecimal.md#bigdecimal-工具类分享
建议对保留规则设置为 RoundingMode.HALF_EVEN,即四舍六入五成双,#2129https://github.com/Snailclimb/JavaGuide/issues/2129
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