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BigDecimal doubleValue() Method in Java

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  • Last Updated : 04 Dec, 2018
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The java.math.BigDecimal.doubleValue() is an in-built function which converts the BigDecimal object to a double. This function converts the BigDecimal to Double.NEGATIVE_INFINITY or Double.POSITIVE_INFINITY as appropriate or according to the passed object, if its magnitude is too big to be represented as a double.

Note: The information about the decimal precision of the Double value of the given BigDecimal value can be lost even if the return value is finite.

Syntax:

public double doubleValue()

Parameters: The method does not accept any parameters.

Return Value: This method returns the double value of this BigDecimal Object.

Examples:

Input : 11234
Output : 11234.0

Input : 2679.30000
Output : 2679.3

Below programs illustrates the use of byteValueExact() Function:
Program 1:




// Java program to demonstrate doubleValue() method
import java.io.*;
import java.math.*;
  
public class GFG {
  
    public static void main(String[] args)
    {
  
        // Creating a BigDecimal object
        BigDecimal big;
  
        // Creating a Double object
        Double dob;
  
        big = new BigDecimal("4743");
  
        // Assigning the converted value of bg to d
        dob = big.doubleValue();
  
        // Printing the corresponding double value
        System.out.println("Double value of " + big + " is " + dob);
    }
}

Output:

Double value of 4743 is 4743.0

Program 2:




// Java program to demonstrate doubleValue() method
import java.io.*;
import java.math.*;
  
public class GFG {
  
    public static void main(String[] args)
    {
  
        // Creating a BigDecimal object
        BigDecimal big;
  
        // Creating a Double object
        Double dob;
  
        big = new BigDecimal("6714592679.34008");
  
        // Assigning the converted value of bg to d
        dob = big.doubleValue();
  
        // Printing the corresponding double value
        System.out.println("Double value of " + big + " is " + dob);
    }
}

Output:

Double value of 6714592679.34008 is 6.71459267934008E9

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


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