IntToLongFunction 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 accepts a int-valued argument 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 IntToLongFunction Interface by using different examples.

IntToLongFunction_Interface_Java8_Techndeck

IntToLongFunction Interface in Java 8 with Examples...!!! Click To Tweet

Look at IntToLongFunction Javadoc description below:

IntToLongFunctionInterface_Signature_Java8_Techndeck

IntToLongFunction Interface contains following method:

applyAsLong

This method performs operation on the given int-valued argument and return an long-valued result.

Lets understand above mentioned method through below example:

Example: ‘applyAsLong’ method

Output:
Java 8 IntToLongFunction Interface is an absolute useful addition as part of ‘Functional Interfaces’ and can serve variety of purposes. It is quite powerful as it can be used as a higher order functions through lambda functions and above examples could help you to get better idea on how to implement it.

IntToLongFunction Interface in Java 8 with Examples...!!! Click To Tweet

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Author

  • Deepak Verma is a Test Automation Consultant and Software development Engineer for more than 10 years. His mission is to help you become an In-demand full stack automation tester. He is also the founder of Techndeck, a blog and online coaching platform dedicated to helping you succeed with all the automation basics to advanced testing automation tricks.

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