报错:java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result.报错语句:a.divide(b));原因:
JAVA中如果用BigDecimal做除法的时候一定要在divide方法中传递第二个参数,定义精确到小数点后几位,否则在不整除的情况下,结果是无限循环小数时,就会抛出以上异常。解决方法:a.divide(b, 2, BigDecimal.ROUND_HALF_UP);总结:
注意这个divide方法有两个重载的方法,一个是传两个参数的,一个是传三个参数的://两个参数的方法://传入除数@param divisor value by which this {@code BigDecimal} is to be divided.
//传入round的模式@param roundingMode rounding mode to apply.
//三个参数的方法://传入除数@param divisor value by which this {@code BigDecimal} is to be divided.
//传入精度@param scale scale of the {@code BigDecimal} quotient to be returned.
//传入round的模式@param roundingMode rounding mode to apply.
作者:Winter_Soldier
链接:https://www.jianshu.com/p/194d12af3673