DoubleBinaryOperator Interface is a part of the java.util.function package which is introduced in Java 8. It is an in-built Functional Interface. This function expects two arguments of type double as an input and produces a double type result. As it is a functional interface, it can be used assignment target for lambda expression or method reference. In this post, we are going to see several implementations of DoubleBinaryOperator Interface by using different examples.
DoubleBinaryOperator Interface in Java 8 with Examples...!!! Click To Tweet
Look at DoubleBinaryOperator Javadoc description below:
DoubleBinaryOperator Interface contains below method:
applyAsDouble
Let’s discuss this method:
applyAsDouble
This method performs operation on the given arguments and return the double-valued result.
1 | double applyAsDouble(double left, double right); |
Lets understand above mentioned method through below example:
Example. ‘applyAsDouble’ method
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | import java.util.function.DoubleBinaryOperator; public class DoubleBinaryOperatorInterfaceJava8Example { public static void main(String[] args) { System.out.println("DoubleBinaryOperator Interface - 'applyAsDouble' example \n"); //1. Annonymous Implementation DoubleBinaryOperator annonymousObj = new DoubleBinaryOperator() { @Override public double applyAsDouble(double x, double y) { return x + y; } }; //2. Lambda Implementation DoubleBinaryOperator lambdaObj = (x, y) -> x + y; //1 System.out.println("Result : " + annonymousObj.applyAsDouble(5, 6)); //2 System.out.println("Result : " + lambdaObj.applyAsDouble(5, 6)); } } |
1 2 3 4 | DoubleBinaryOperator Interface - 'applyAsDouble' example Result : 11.0 Result : 11.0 |
DoubleBinaryOperator Interface in Java 8 with Examples...!!! Click To Tweet
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