Related Articles

# BigDecimal negate() Function in Java

• Last Updated : 04 Dec, 2018
1. The java.math.BigDecimal.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().

Below programs will illustrate the use of java.math.BigDecimal.negate() function:
Program 1 :

 // Java program to demonstrate negate() methodimport java.math.*;  public class GFG {     public static void main(String[] args) {        // Create a BigDecimal object      BigDecimal num;              // Assign value to num      num = new BigDecimal("4743");        System.out.println( "Negated value is " + num.negate() );   }}
Output:
Negated value is -4743

Program 2:

 // Java program to demonstrate negate() methodimport java.math.*;  public class GFG {     public static void main(String[] args) {        // Create a BigDecimal object      BigDecimal num;              // Assign value to num      num = new BigDecimal("-9674283517.97");        System.out.println( "Negated value is " + num.negate() );   }}
Output:
Negated value is 9674283517.97

2. The java.math.BigDecimal.negate(MathContext mc) method returns a BigDecimal whose value is the negated value of it, i.e. obtained by rounding off according to the precision settings specified by the object of MathContext class.

Syntax:

public BigDecimal negate(MathContext mc)

Parameters: The method accepts only one parameter mc of MathContext class object which specifies the precision settings for rounding off the BigDecimal.

Return Value: This method returns the negated value of the object which is rounded as per the precision settings.

Exception: The method might throw ArithmeticException if the result obtained is not exact but the rounding mode is UNNECESSARY.

Below programs will illustrate the use of java.math.BigDecimal.negate(MathContext mc) method:
Program 1

 // Java program to demonstrate negate(MathContext mc) methodimport java.math.*;  public class GFG {      public static void main(String[] args)    {          // create 2 BigDecimal objects        BigDecimal num, negv;          MathContext mc = new MathContext(4); // 4 precision          // assign value to num        num = new BigDecimal("78.6714");          // assign negate value of num to negv using mc        negv = num.negate(mc);        System.out.println("Negated value, rounded to 4"+        " precision " + negv);    }}
Output:
Negated value, rounded to 4 precision -78.67

Program 2

 // Java program to demonstrate negate(MathContext mc) methodimport java.math.*;  public class GFG {      public static void main(String[] args)    {          // create 2 BigDecimal objects        BigDecimal num, negv;          MathContext mc = new MathContext(12); // 12 precision          // assign value to num        num = new BigDecimal("-178901456.68431");          // assign negate value of num to negv using mc        negv = num.negate(mc);        System.out.println("Negated value, rounded to 12 "+        "precision " + negv);    }}
Output:
Negated value, rounded to 12 precision 178901456.684

Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more,  please refer Complete Interview Preparation Course.

My Personal Notes arrow_drop_up