ToLongBiFunction 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 expect two arguments as an input and produces a long-valued 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 ToLongBiFunction Interface by using different examples.
ToLongBiFunction Interface in Java 8 with Examples...!!! Click To Tweet
Look at ToLongBiFunction Javadoc description below:
ToLongBiFunction Interface contains below method:
applyAsLong
Let’s discuss this method:
applyAsLong
This method performs operation on the given arguments and return the Long-valued result.
1 | Long applyAsLong(T t, U u); |
Let’s understand above mentioned method through below example:
Example. ‘applyAsLong’ 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 | import java.util.function.ToLongBiFunction; public class ToLongBiFunctionInterfaceJava8Example { public static void main(String[] args) { System.out.println("ToLongBiFunction Interface - 'applyAsLong' example \n"); //1. anonymous implementation ToLongBiFunction <String, Integer> anonymousObj = new ToLongBiFunction <String, Integer> () { @Override public long applyAsLong(String t, Integer u) { return Long.parseLong(t) + u; } }; //2. lambda implementation ToLongBiFunction <String, Integer> lambdaObj = (t, u) -> Long.parseLong(t) + u; //1 System.out.println("Sum of 5 and 8 is: " + anonymousObj.applyAsLong("5", 8)); //2 System.out.println("Sum of 5 and 8 is: " + lambdaObj.applyAsLong("5", 8)); } } |
1 2 3 4 | ToLongBiFunction Interface - 'applyAsLong' example Sum of 5 and 8 is: 13 Sum of 5 and 8 is: 13 |
ToLongBiFunction Interface in Java 8 with Examples...!!! Click To Tweet
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