Create packages, import packaged classes and interfaces into your programs, move packages, and encapsulate them in jar files.

The difference between abstract classes and interfaces has long vexed Java developers. Find out how Java 8's default methods introduce both new complexity and new options to that familiar ...

Learn about serialization in Java with our comprehensive tutorial. We provide examples to help you understand how serialization works.

When the class is executed, the result is the text string lambda-tutorial.txt written to the console. Example UnaryOperator Lambda expression If you implement the UnaryOperator interface with a ...

The functional Predicate interface gets used extensively by the Java 8 Streams API. Any developer who wants to master functional programming in Java will need to be comfortable with the Predicate ...