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Java BigDecimal plus() Method with Example

BigDecimal Class plus() method: Here, we are going to learn about the plus() method of BigDecimal Class with its syntax and example.
Submitted by Preeti Jain, on May 05, 2020

BigDecimal Class plus() method

Syntax:

    public BigDecimal plus();
    public BigDecimal plus(MathContext ma_co);
  • plus() method is available in java.math package.
  • plus() method is used to get the value with (+) representation of this BigDecimal.
  • plus(MathContext ma_co) method is used to get the value with (+) representation of this BigDecimal along with rounding based on the given MathContext settings.
  • These methods may throw an exception at the time of + representation of an object.
    ArithmeticException: This exception may throw when the result is not accurate and set the rounding mode "UNNECESSARY".
  • These are non-static methods and it is accessible with class objects and if we try to access these methods with the class name then we will get an error.

Parameter(s):

  • In the first case, plus(),
    • It does not accept any parameter.
  • In the first case, plus(MathContext ma_co),
    • MathContext ma_co – represents the context setting to use in rounding.

Return value:

In both the cases, the return type of the method is BigDecimal,

  • In the first case, it returns the plus value of this BigDecimal.
  • In the second case, it returns the plus value of this BigDecimal. with rounding based on the given context setting.

Example:

// Java program to demonstrate the example 
// of plus() method of BigDecimal

import java.math.*;

public class PlusOfBD {
    public static void main(String args[]) {
        // Initialize two variables val1,
        // val2 
        String val1 = "-10.30";
        int val2 = 4;

        // Initialize two BigDecimal objects and
        // one MathContext
        BigDecimal b_dec1 = new BigDecimal(val1);
        BigDecimal b_dec2 = new BigDecimal(val2);
        MathContext ma_co = new MathContext(2, RoundingMode.CEILING);

        System.out.println("plus(): ");

        // returns the plus representation of this BigDecimal
        // like (+ b_dec2)
        BigDecimal plus = b_dec2.plus();
        System.out.println("b_dec2.plus(): " + plus);

        System.out.println(" ");

        System.out.println("plus(MathContext): ");

        // returns the plus representation of this BigDecimal
        // (+b_dec1) and return the result based on the given
        // context settings
        plus = b_dec1.plus(ma_co);
        System.out.println("b_dec1.plus(ma_co): " + plus);
    }
}

Output

plus(): 
b_dec2.plus(): 4
 
plus(MathContext): 
b_dec1.plus(ma_co): -10
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