What is BigInteger.shortValueExact() method in Java?

In Java, the BigInteger class handles calculations with very big integral values that are beyond the limits of the primitive integer type.

The shortValueExact method of the BigInteger class converts the value of the BigInteger to a short value. An ArithmeticException is thrown if the value of this BigInteger is larger than the maximum value a short type can hold.

Syntax

public short shortValueExact()

This method doesn’t take any argument.

This method returns the BigInteger value as a short value.

Example

The below code demonstrates how to use the shortValueExact method:

import java.math.BigInteger;



class ShortValueExact {

    public static void main( String args[] ) {

        BigInteger val1 = new BigInteger("10");

        BigInteger val2 = new BigInteger("32768");

        System.out.println("ShortValueExact of " + val1 + "  : "+ val1.shortValueExact());

        try{

          System.out.println("ShortValueExact of " + val2 + "  : "+ val2.shortValueExact());

        } catch(Exception e) {

          System.out.println("Exception while converting the " + val2 + " - \n" + e);

        }

        

    }

}

Explanation

  • Lines 5 to 6: We created two BigInteger objects, val1 and val2, with values 10 and 32768, respectively.

  • Line 7: We called the shortValueExact method of the val1 object. This will return the BigInteger value as short. The value 10 can be stored in short, so there will be no exception.

  • Line 9: We called the shortValueExact method of the val2 object. The value 32768 is too large to be stored in short so, an ArithmeticException is thrown.

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