The IntBinaryOperator interface was introduced in Java 8. It represents an operation on two int values and returns the result as an int value. It is a functional interface and thus can be used as a lambda expression or in a method reference. It is mostly used when the operation needs to be encapsulated from the user.
Methods
- applyAsInt(): This function takes two int values, performs the required operation and returns the result as an int.
public int applyAsInt(int val1, int val2)
Example to demonstrate IntBinaryOperator interface as a lambda expression .
// Java program to demonstrate IntBinaryOperator  import java.util.function.IntBinaryOperator;  public class IntBinaryOperatorDemo {    public static void main(String[] args)    {        // Binary operator defined to divide        // factorial of two numbers        IntBinaryOperator binaryOperator = (x, y) ->        {            int fact1 = 1;            for (int i = 2; i <= x; i++) {                fact1 *= i;            }            int fact2 = 1;            for (int i = 2; i <= y; i++) {                fact2 *= i;            }            return fact1 / fact2;        };          System.out.println("5! divided by 7! = "                           + binaryOperator.applyAsInt(5, 7));        System.out.println("7! divided by 5! = "                           + binaryOperator.applyAsInt(7, 5));    }} |
Output:
5! divided by 7! = 0 7! divided by 5! = 42
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/function/IntBinaryOperator.html
