How do you subtract BigDecimal?

Asked By: Filomena Garcia Quiros | Last Updated: 15th February, 2020
Category: technology and computing programming languages
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subtract(BigDecimal subtrahend, MathContext mc) returns a BigDecimal whose value is (this - subtrahend), with rounding according to the context settings. If subtrahend is zero then this, rounded if necessary, is used as the result. If this is zero then the result is subtrahend. negate(mc).

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Also know, how do I use BigDecimal?

Using a BigDecimal implies that you should:

  1. Create new BigDecimal variables, using the constructor.
  2. In order to add a BigDecimal to another BigDecimal, use add(BigDecimal augend) API method, that returns a BigDecimal whose value is (this + augend), and whose scale is max(this.

Additionally, how do you split BigDecimal? BigDecimal. divide(BigDecimal divisor, int scale, RoundingMode roundingMode) returns a BigDecimal whose value is (this / divisor), and whose scale is as specified. If rounding must be performed to generate a result with the specified scale, the specified rounding mode is applied.

Similarly, it is asked, can BigDecimal be negative?

A BigDecimal consists of an arbitrary precision integer unscaled value and a 32-bit integer scale. If zero or positive, the scale is the number of digits to the right of the decimal point. If negative, the unscaled value of the number is multiplied by ten to the power of the negation of the scale.

What is the difference between BigDecimal and double?

They are very different. Besides the difference in precision, the most important difference is that BigDecimal is a specifically decimal type. That means it's designed to represent fractions with finite-length decimal (base-10) representations. On the other hand, double is a base-2 floating-point number.

24 Related Question Answers Found

How do you multiply BigDecimal?

BigDecimal multiply() Method in Java
scale() + multiplicand. scale()). Parameters: This method accepts a single parameter multiplicand of BigDecimal type which refers to the Value to be multiplied by this BigDecimal. Return value: This method returns a BigDecimal whose value this * multiplicand.

What is BigDecimal data type?

A BigDecimal consists of a random precision integer unscaled value and a 32-bit integer scale. If greater than or equal to zero, the scale is the number of digits to the right of the decimal point. If less than zero, the unscaled value of the number is multiplied by 10^(-scale).

What is the advantage of BigDecimal over double?

1. Which of the following is the advantage of BigDecimal over double? Explanation: BigDecimal has unnatural syntax, needs more memory and creates a great amount of garbage. But it has a high precision which is useful for some calculations like money.

How do I compare BigDecimal values?

Use the compareTo method of BigDecimal : public int compareTo(BigDecimal val) Compares this BigDecimal with the specified BigDecimal. Returns: -1, 0, or 1 as this BigDecimal is numerically less than, equal to, or greater than val. BigDecimal isn't a primitive, so you cannot use the < , > operators.

How do I check if BigDecimal is integer?


7 Answers. Depending on the source/usage of your BigDecimal values it might be faster to check if the scale <= 0 first. If it is, then it's definitely an integer value in the mathematical sense. If it is >0, then it could still be an integer value and the more expensive test would be needed.

What is BigDecimal scale?

BigDecimal. scale() is an inbuilt method in java that returns the scale of this BigDecimal. For zero or positive value, the scale is the number of digits to the right of the decimal point. For negative value, the unscaled value of the number is multiplied by ten to the power of the negation of the scale.

What is the default value for BigDecimal in Java?

1 Answer. If you are using type BigDecimal, then its default value is null (it is object, not primitive type), so you get [1] automatically.

How do you convert a string to a large decimal?

2 ways to Convert String to BigDecimal in Java with Examples
  1. Using Constructor of Big Decimal. This is the easiest way to convert String to BigDecimal in java. Just use BigDecimal(String) constructor. BigDecimal obj = new BigDecimal(String); The above line will do the job.
  2. Using BigDecimal. valueOf() method. Convert String to BigDecimal by using BigDecimal. valueOf(double) method.

What is Signum representation?

The java. math. signum() is an inbuilt method in Java that returns the signum function of this BigDecimal. The sign function or signum function is an odd mathematical function that extracts the sign of a real number. In mathematical expressions, the sign function is often represented as sgn.

What is BigDecimal one in Java?


The BigDecimal class provides operation for arithmetic, comparison, hashing, rounding, manipulation and format conversion. This method can handle very small and very big floating point numbers with great precision. In java, BigDecimal consists of a random precision integer scale and a 32-bit integer scale.

What is negate in Java?

negate() method returns a BigDecimal whose value is the negated value of the BigDecimal with which it is used. Syntax: public BigDecimal negate() Parameters: The method does not take any parameters . Return Value: This method returns the negative value of the BigDecimal object and whose scale is this. scale().

How do you make a number negative in Java?

To convert negative number to positive number (this is called absolute value), uses Math. abs(). This Math. abs() method is work like this “ number = (number < 0 ? -number : number); ".

How do you convert big decimal to string?

BigDecimal toString() Method in Java with Examples
A standard canonical string form of the BigDecimal is created by converting the absolute value of the unscaled value of BigDecimal in base ten using the characters '0' through '9' with no leading zeros except when the value is 0, then single character '0' is used.

What is MathContext in Java?

MathContext class provides immutable objects which encapsulate the context settings and describes certain rules for numerical operators, such as those implemented by the BigDecimal class.

How do you know if BigInteger is greater than zero?


signum() method helps us to identify whether a BigInteger is positive or zero or negative. It returns one of the following values depending on the following conditions: returns -1 when number is negative. returns 0 when number is zero.

What is BigInteger in Java?

BigInteger Class in Java. BigInteger class is used for mathematical operation which involves very big integer calculations that are outside the limit of all available primitive data types. For example factorial of 100 contains 158 digits in it so we can't store it in any primitive data type available.

How do you divide in Java?

// Divide a literal by a literal; result is 5 int result = 10 / 2; // Divide a variable by another variable; result is 3 int a = 15; int b = 5; int result = a / b; When dividing integer types, the result is an integer type (see the previous chapter for the exact data type conversions for mathematical operations).