Java BigDecimal class

The BigDecimal class provides operation for arithmetic, comparison, hashing, rounding, manipulation and format conversion. This method can handle very small and very big floating point numbers with great precision.

In java, BigDecimal consists of a random precision integer scale and a 32-bit integer scale. If positive or zero, the scale is the number of digits to the right of the decimal point. If less than zero, the unscaled value of the number is multiplied by ten to the power of the negation of the scale(10^(-scale)).

Example 1

import java.math.BigDecimal;  
public class BigDecimalExample1   
{    
    public static void main(String[] args)   
    {    
        // Create BigDecimal object    
        BigDecimal bdValue1, bdValue2;   
        // Create  int variable    
        int integerValue1, integerValue2;    
    
        // Assigning value into BigDecimal object     
        bdValue1 = new BigDecimal("-36755"); 
        bdValue2 = new BigDecimal("63745");
	
        // It returns int value of BigDecimal    
        integerValue1 = bdValue1.intValue();    
        integerValue2=bdValue2.intValueExact();
    
        // Displaying int Value    	
        System.out.println( "Returned int value is = "+integerValue1);
        // Displaying exact Integer Value
        System.out.println("Returned Exact Integer Value of " +bdValue2 + " is = " + integerValue2); 
    }    
}  

Test it Now

Output:

Returned int value is = -36755
Returned Exact Integer Value of 63745 is = 63745

Example 2

import java.math.BigDecimal;    
public class BigDecimalMaxExample2 
{  
    public static void main(String[] args) 
    {  
          //Creating BigDecimal objects  
          BigDecimal bdValue_1, bdValue_2, bdValue_3, bdMaxValue1, bdMaxValue2;  
          
          // Assigning value into BigDecimal objects  
          bdValue_1 = new BigDecimal("152207");  
          bdValue_2 = new BigDecimal("179311");  
          bdValue_3 = new BigDecimal("128114");
           
          // It returns Max and min value  
          bdMaxValue1 = bdValue_1 .max(bdValue_2);
          bdMaxValue2 = bdValue_1 .min(bdValue_3);
            
          // Displaying max value  
          System.out.println("Max Value among " + bdValue_1 +   
                       " and " + bdValue_2 + " is = " +bdMaxValue1);  
          // Displaying min value  
          System.out.println("Min Value among " + bdValue_1 +   
                       " and " + bdValue_3 + " is = " +bdMaxValue2);
    }  
}  

Test it Now

Output:

Max Value among 152207 and 179311 is = 179311
Min Value among 152207 and 128114 is = 128114

Java BigDecimal methods

SN	Modifier and Type	Method	Description
1	BigDecimal	abs()	This method returns a BigDecimal whose value is the absolute value of this BigDecimal and whose scale is this.scale().
2	BigDecimal	add()	This method returns a BigDecimal whose value is (this + augend) and whose scale is max(this.scale(), augend.scale()).
3	byte	byteValueExact()	This method is used to convert the BigDecimal to a byte and check for lost information.
4	int	compareTo()	This method compares this BigDecimal with the specified BigDecimal.
5	BigDecimal	divide()	This method returns a BigDecimal whose value is (this / divisor) and whose preferred scale is (this.scale() - divisor.scale()).
6	BigDecimal[]	divideAndRemainder()	This method is used to return a two-element BigDecimal array which contains the result of divideToIntegralValue followed by the result of remainder on the two operands.
7	BigDecimal	divideToIntegralValue()	This method is used to return a BigDecimal whose value is the integer part of the quotient (this / divisor) rounded down.
8	double	doubleValue()	This method is used to convert this BigDecimal to a double.
9	boolean	equals()	This method is used to compare the BigDecimal with the specified Object for equality.
10	float	floatValue()	This method is used to convert this BigDecimal to a float.
11	int	hashCode()	This method returns the hash code for this BigDecimal.
12	int	intValue()	This method is sued to convert this BigDecimal to an int.
13	int	intValueExact()	This method is used to convert this BigDecimal to an int, checking for lost information.
14	long	longValue()	This method converts this BigDecimal to a long.
15	long	longValueExact()	This method is used to convert this BigDecimal to a long, checking for lost information.
16	BigDecimal	max()	This method returns the maximum of this BigDecimal and val.
17	BigDecimal	min()	This method returns the minimum of this BigDecimal and val.
18	BigDecimal	movePointLeft()	This method returns a BigDecimal which is equivalent to this one with the decimal point moved n places to the left.
19	BigDecimal	movePointRight()	This method is used to return a BigDecimal which is equivalent to this one with the decimal point moved n places to the right.
20	BigDecimal	multiply()	This method returns a BigDecimal whose value is (this � multiplicand), and whose scale is (this.scale() + multiplicand.scale())
21	BigDecimal	negate()	This method returns a BigDecimal whose value is (-this), and whose scale is this.scale().
22	BigDecimal	plus()	This method returns a BigDecimal whose value is (+this), and whose scale is this.scale().
23	BigDecimal	pow()	This method returns a BigDecimal whose value is (thisn),
24	int	precision()	This method returns the precision of this BigDecimal.
25	BigDecimal	remainder()	This method returns a BigDecimal whose value is (this % divisor).
26	BigDecimal	round()	This method returns a BigDecimal rounded according to the MathContext settings.
27	int	scale()	This method returns the scale of this BigDecimal.
28	BigDecimal	scaleByPowerOfTen()	This method returns a BigDecimal whose numerical value is equal to (this * 10n).
29	short	shortValueExact()	This method is used to convert this BigDecimal to a short, checking for lost information.
30	int	signum()	This method returns the signum function of this BigDecimal.
31	BigDecimal	stripTrailingZeros()	This method returns a BigDecimal which is numerically equal to this one but with any trailing zeros removed from the representation.
32	BigDecimal	Subtract()	This method returns a BigDecimal whose value is (this - subtrahend), and whose scale is max(this.scale(), subtrahend.scale())
33	BigInteger	toBigInteger()	This method is used to convert this BigDecimal to a BigInteger.
34	BigInteger	toBigIntegerExact()	This method is used to convert this BigDecimal to a BigInteger, checking for lost information.
35	String	toEngineeringString()	This method returns a string representation of this BigDecimal, using engineering notation if an exponent is needed.
36	String	toString()	This method returns the string representation of this BigDecimal
37	BigDecimal	ulp()	This method returns the size of an ulp, a unit in the last place, of this BigDecimal.
38	static BigDecimal	valueOf()	This method is used to translate a double into a BigDecimal.