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Java BigDecimal doubleValue() Method with Example

BigDecimal Class doubleValue() method: Here, we are going to learn about the doubleValue() method of BigDecimal Class with its syntax and example.
Submitted by Preeti Jain, on May 03, 2020

BigDecimal Class doubleValue() method

• doubleValue() method is available in java.math package.
• doubleValue() method is used to convert a BigDecimal to a double value and when this BigDecimal magnitude is not in a range of double so it will be changed to Double.POSITIVE_INFINITY or Double.NEGATIVE_INFINITY.
• doubleValue() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• doubleValue() method does not throw an exception at the time of converting BigDecimal to a double.

Syntax:

    public double doubleValue();

Parameter(s):

• It does not accept any parameter.

Return value:

The return type of this method is double, it returns the double representation of this BigDecimal.

Example:

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

import java.math.*;

public class DoubleValueOfBD {
    public static void main(String args[]) {
        // Initialize two variables of int and 
        // String type
        int val = 125;
        String str = "100";

        // Initialize two BigDecimal objects  
        BigDecimal b_dec1 = new BigDecimal(val);
        BigDecimal b_dec2 = new BigDecimal(str);

        // By using doubleValue() method is to 
        // convert this BigDecimal (b_dec1) into
        // a double, variable named d_conv
        double d_conv = b_dec1.doubleValue();
        System.out.println("b_dec1.doubleValue(): " + d_conv);

        // By using doubleValue() method is to 
        // convert this BigDecimal (b_dec2) into
        // a double, variable named d_conv
        d_conv = b_dec2.doubleValue();
        System.out.println("b_dec2.doubleValue(): " + d_conv);
    }
}

Output

b_dec1.doubleValue(): 125.0
b_dec2.doubleValue(): 100.0