Basic usage of BigDecimal for addition, subtraction, multiplication and division in Java

preface

As we all know, Java is in Java The API class BigDecimal provided in the math package is used to accurately calculate the number of significant bits exceeding 16 bits. Double, a double precision floating-point variable, can handle 16 bit significant numbers. In practical applications, larger or smaller numbers need to be calculated and processed. Float and double can only be used for scientific computing or engineering computing. Java should be used in Business Computing math. BigDecimal。

BigDecimal creates objects. We cannot use traditional arithmetic operators such as +, -, *, / to directly perform mathematical operations on their objects, but must call their corresponding methods.

The parameter in the method must also be an object of BigDecimal. Constructors are special methods of classes that are specifically used to create objects, especially objects with parameters.

The example code is as follows

summary

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