BigDecimal valueOf() Method in Java

Last Updated : 25 Feb, 2020

The java.math.BigDecimal.valueOf(long val) is an inbuilt method in java that translates a long value into a BigDecimal value with a scale of zero. It allows us, the reuse of frequently used BigDecimal values and hence this “static factory method” is provided in preference to a (long) constructor.

Syntax:

public static BigDecimal valueOf(long val)

Parameters: The method accepts a single parameter val of Long data type and refers to the value that needs to be translated into a BigDecimal value.

Return value: The method returns a BigDecimal value of Long val.

Below program illustrates the working of java.math.BigDecimal.valueOf(long val) method:

// Program to demonstrate valueOf(long) method of BigDecimal 
  
import java.math.*;
  
public class gfg {
  
    public static void main(String[] args)
    {
  
        // Creating a Long Object
        Long ln = new Long("745812345678");
  
        // Assigning the bigdecimal value of ln to b
        BigDecimal b = BigDecimal.valueOf(ln);
  
        // Displaying BigDecimal value
        System.out.println("The Converted BigDecimal value is: "+b);
    }
}

Output:

The Converted BigDecimal value is: 745812345678

The java.math.BigDecimal.valueOf(double val) is an inbuilt method in java that translates a double into a BigDecimal, using the double’s canonical string representation provided by the Double.toString(double) method.

Syntax:

public static BigDecimal valueOf(double val)

Parameters: The method accepts a single parameter val of Double data type and refers to the value that needs to be translated into a BigDecimal value.

Return value: The method returns a BigDecimal value which is equal to or approximately equal to Double val.

Below program illustrates the working of java.math.BigDecimal.valueOf(double val) method:
Program 1:

// Program to demonstrate valueOf(double) method of BigDecimal 
  
import java.math.*;
  
public class gfg {
  
    public static void main(String[] args)
    {
  
        // Creating a Double Object
        Double d = new Double("785.254");
  
        /// Assigning the bigdecimal value of ln to b
        BigDecimal b = BigDecimal.valueOf(d);
  
        // Displaying BigDecimal value
        System.out.println("The Converted BigDecimal value is: " + b);
    }
}

Output:

The Converted BigDecimal value is: 785.254

The java.math.BigDecimal.valueOf(long unscaledVal, int scale) is an inbuilt method in Java that is used to translate a long unscaled value and an int scale into a BigDecimal. This “static factory method” is provided in preference to a (long, int) constructor because it allows for reuse of frequently used BigDecimal values.

Syntax:

public static BigDecimal valueOf(long unscaledVal, int scale)

Parameters: The method takes two parameters:

unscaledVal – This is of Long data type and refers to the Unscaled value of the BigDecimal.
scale- This is of Integer data type and refers to the Scale of the BigDecimal.

Return Value: The method returns a BigDecimal whose value is (unscaledVal × 10^-scale).

Below program illustrates the java.math.BigDecimal.valueOf(long unscaledVal, int scale) method:

// Program to demonstrate valueOf(long, int) method of BigDecimal 
  
import java.math.*;
  
public class gfg {
  
    public static void main(String[] args)
    {
  
        // Creating a Long Object
        Long ln = new Long("789654");
  
        // Assigning the bigdecimal value of ln to BigDecimal b
        // with scale 3
        BigDecimal b = BigDecimal.valueOf(ln, 3);
  
        // Displaying the BigDecimal value
        System.out.println("The BigDecimal value is " + b);
    }
}

Output:

The BigDecimal value is 789.654

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

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