The Stream API

Abstract

By the end of this chapter students should be able to:

• explain the term stream in the context of the java stream API;

• identify the advantages of stream processing over iteration;

• describe the three stages involved in processing a stream;

• explain what is meant by lazy evaluation;

• create streams from scratch, from collections and from files;

• use a variety of intermediate methods to process streams;

• use appropriate methods to terminate streams;

• explain the difference between stateless and stateful operations;

• explain how streams can be created in parallel mode;

• identify the possible pitfalls with parallel stream processing and explain how to avoid them.