Java 8 Optional Example

Dani Buiza August 7th, 2014

Last Updated Jan. 18, 2019 In this article we are going to show how to use the new java.util.Optional class. The null reference is a very common problem in Java, everybody got once a NullPointerException because some variable or input parameter was not properly validated. In Java, null, can have a logical value and a meaning; so it is important ...