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.

More about Java interfaces What can you do with interfaces in your Java programs? Get an overview with Jeff’s Six roles of the Java interface.

When to use interfaces in Java Interfaces are very useful for decoupling code and implementing polymorphism. We can see an example in the JDK, with the List interface: ...