The java.math.BigDecimal.toBigIntegerExact() is an inbuilt method in java that converts this BigDecimal to a BigInteger, checking for lost information. An exception is thrown if this BigDecimal has a nonzero fractional part.
Syntax:
public BigInteger toBigIntegerExact()
Parameters: The method does not take any parameters.
Return value: This method returns the value of BigDecimal object converted to a BigInteger.
Examples:
Input: (BigDecimal) 1213 Output: (BigInteger) 1213 Input: (BigDecimal) 12785412 Output: (BigInteger) 12785412
Below programs illustrates the working of the above mentioned method:
Program 1:
// Program to demonstrate toBigIntegerExact() method of BigDecimal   import java.math.*;  public class gfg {      public static void main(String[] args)    {          // Assigning BigDecimal b        BigDecimal b = new BigDecimal("1213");          // Assigning the BigIntegerExact value of BigInteger b to BigInteger i        BigInteger i = b.toBigIntegerExact();          // Printing i value        System.out.println("BigInteger value of " + b + " is " + i);    }} |
Output:
BigInteger value of 1213 is 1213
Program 2:
// Program to demonstrate toBigIntegerExact() method of BigDecimal   import java.math.*;  public class gfg {      public static void main(String[] args)    {          // Assigning BigDecimal b        BigDecimal b = new BigDecimal("12785412");          // Assigning the BigIntegerExact value of BigInteger b to BigInteger i        BigInteger i = b.toBigIntegerExact();          // Printing i value        System.out.println("BigInteger value of " + b + " is " + i);    }} |
Output:
BigInteger value of 12785412 is 12785412
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