Java Math BigDecimal.add(augend, MathContext mc) Java Math BigDecimal.add() 方法 Java Math byteValueExact() 方法 Java Math BigDecimal.add(augend, MathContext mc) package com.codingdict; import java.math.*; public class BigDecimalDemo { public static void main(String[] args) { // create 3 BigDecimal objects BigDecimal bg1,bg2,bg3,bg4; // assign value to bg1 and bg2 bg1 = new BigDecimal("40.732"); bg2 = new BigDecimal("30.12"); // print bg1 and bg2 value System.out.println("Object Value is " + bg1); System.out.println("Augend value is " + bg2); // create MathContext object with 4 precision MathContext mc = new MathContext(4); // perform add operation on bg1 with augend bg2 and context mc bg3 = bg1.add(bg2,mc); // print bg3 value with System.out.println("Result is " + bg3); } } Java Math BigDecimal.add() 方法 Java Math byteValueExact() 方法