BigDecimal plus() method in Java

1. The java.math.BigDecimal.plus() is an inbuilt method in java that returns a BigDecimal whose value is (+this), and whose scale is this.scale(). This method, which simply returns this BigDecimal is included for symmetry with the unary minus method negate().
   Syntax:
   

public BigDecimal plus()

1. Parameters: The function does not accepts any parameter.
   Return value: This method returns the object value i.e., this.
   Below program illustrates the working of the above mentioned method: 
   Program 1:
   

Java

// Java program to demonstrate the
// plus() method

import java.math.*;

public class Gfg {

    public static void main(String[] args)
    {

        // Assign value to b1
        BigDecimal b1 = new BigDecimal("-45.652");

        // Assign the result of plus method on
        // BigDecimal Objects b1 to b2
        BigDecimal b2 = b1.plus();

        // Print the value of b2
        System.out.println("The value of the BigDecimal is " + b2);
    }
}

Output:

The value of the BigDecimal is -45.652

1. Program 2:
   

Java

// Java program to demonstrate the
// plus() method

import java.math.*;

public class gfg {

    public static void main(String[] args)
    {

        // Assign value to b1
        BigDecimal b1 = new BigDecimal("7458.3256");

        // Assign the result of plus method on
        // BigDecimal Objects b1 to b2
        BigDecimal b2 = b1.plus();

        // Print the value of b2
        System.out.println("The value of the BigDecimal is " + b2);
    }
}

Output:

The value of the BigDecimal is 7458.3256

2. The java.math.BigDecimal.plus(MathContext mc) is an inbuilt method in java that returns a BigDecimal whose value is (+this), with rounding according to the context settings.
   Syntax:
   

public BigDecimal plus(MathContext mc)

1. Parameters: This method accepts a single parameter mc which refers to the context of rounding to use i.e., up to what digit the value would be rounded.
   Return value: This method returns the value of BigDecimal Object, rounded as necessary. A zero result will have a scale of 0.
   Below program illustrates the working of the above mentioned method: 
   Program 1:
   

Java

// Java program to demonstrate the
// plus() method

import java.math.*;

public class gfg {

    public static void main(String[] args)
    {

        BigDecimal b1 = new BigDecimal("-452.325");

        MathContext m = new MathContext(4); // 4 precision

        // Perform plus on BigDecimal Objects b1 using m
        BigDecimal b2 = b1.plus(m);

        // Print the value of b2
        System.out.println("Result of plus is " + b2);
    }
}

Output:

Result of plus is -452.3

1. Program 2:
   

Java

// Java program to demonstrate the
// plus() method

import java.math.*;

public class gfg {

    public static void main(String[] args)
    {

        BigDecimal b1 = new BigDecimal("-10.325");

        // 4 precision
        MathContext m = new MathContext(4);

        // Perform plus on BigDecimal Objects b1 using m
        BigDecimal b2 = b1.plus(m);

        // Print the value of b2
        System.out.println("Result of plus is " + b2);
    }
}

Output:

Result of plus is -10.33

Reference: https://docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html#plus()