Java 17 Recipes

 How It Works
By default, operations are executed in a serial stream. However, you can specify that the 
Java runtime splits the operations between multiple subtasks, thus taking advantage of 
multiple CPUs for performance. When operations are executed in this manner, they are 
executed in “parallel.” The Java runtime can partition streams into multiple substreams 
by invoking the parallelStream() intermediate operation. When this operation is 
invoked, aggregate operations can process the multiple substreams, and then the results 
are combined in the end. You can also execute a stream in parallel by invoking the 
operation BaseStream.parallel(). Naturally, parallel streams have higher overhead 
compared to serial streams, so they are used if there is a performance problem to be 
addressed.
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7-11. Summary
This chapter looked at various data structures and how to work with them. First, you took 
a look at Enums and learned how to utilize them effectively. Next, we covered the basics 
of Arrays and ArrayList and learned how to iterate elements within these structures. 
The chapter also covered Java generics, which allow you to decouple object types from 
container types, providing more type-safe and efficient code. Lastly, this chapter covered 
the Streams API, one of the most important updates introduced in Java 8 for working 
with collections.
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© Josh Juneau, Luciano Manelli 2022 
J. Juneau and L. Manelli, Java 17 Recipes, 
https://doi.org/10.1007/978-1-4842-7963-2_8
CHAPTER 8
Input and Output
The file and network I/O have evolved over the years into a much better framework 
for handling files, network scalability, and ease of use. Java can monitor folders, access 
OS- dependent methods, and create scalable asynchronous network sockets. This is 
in addition to the already robust library for handling input and output streams and 
serializing (and deserializing) object information.
This chapter covers recipes that demonstrate different input and output 
processes. You learn about the serialization of files, sending files over the network, file 
manipulation, and much more. After reading the recipes in this chapter, you are armed 
to develop applications containing sophisticated input and output tasks.