Do you need an example of how to use Java's UnaryOperator in a functional Lambda expression? This tutorial shows you where when and how to use the UnaryOperator interface in a function.

With Java 8, annotations can now be written on any use of a type such as in declarations, generics, and casts. This article introduces type annotations and tools to help build better software.

Use the get() method that returns the equivalent data type in Java. For example, to fetch data that stores as VARCHAR(2) in Oracle, you would call getString() on the ResultSet.