Java BigInteger multiply() method example

public BigInteger multiply(BigInteger val)

The multiply(BigInteger val) method returns a BigInteger whose value is (this * val).

Requires Java 1.1 and up

Below is a java code demonstrates the use of multiply() method of BigInteger class. The example presented might be simple however it shows the behavior of the multiply() method.

package com.javatutorialhq.java.examples;

import java.math.BigInteger;
import java.util.Scanner;

/*
 * A java example source code to demonstrate
 * the use of multiply() method of BigInteger class
 */

public class BigIntegerMultiplyExample {

	public static void main(String[] args) {	
		
		// get user input
		System.out.print("Enter the first value:");
		Scanner s = new Scanner(System.in);
		String firstInput = s.nextLine();
		System.out.print("Enter the second value:");		
		String secondInput = s.nextLine();
		s.close();
		
		// convert the first String Input to BigInteger
		BigInteger val1 = new BigInteger(firstInput);
		// convert the second String Input to BigInteger
		BigInteger val2 = new BigInteger(secondInput);
		/*
		 *  multiply the first value and the second value
		 *  using the multiply() method
		 */
		BigInteger result = val1.multiply(val2);
		System.out.println("Result = "+result);

		
	}

}

This example is a lot simpler than it looks. Basically we ask for user input and converted this value into BigInteger.  The two values entered by the user which has been converted to BigInteger is multiplied using the multiply() method. The quotient is printed at the end of the code.

Below is the sample output when you run the above example.

• Java BigInteger Class Tutorial
• Java Tutorial

• Oracle Java Documentation