![]() ![]() Prior to Java 16, when we simply needed to represent some data, we ended up with an arbitrary class as the one shown in the code snippet below. Records are all about representing data as data in Java code rather than as arbitrary classes. The first big language feature that was delivered in Java 16 is called records. If you're interested to learn more about mapMulti(), I definitely recommend looking at the Java documentation for this method. With added language features, runtime enhancements, previews and incubators, and literally thousands of smaller fixes, Java 17 is ready to be the new Java platform standard. I won't go into much detail about this method in this article as I would like to discuss the new language features in Java 16. The changes in Java 17 are significant compared to Java 16 and, as an LTS release, the Java 17 platform shows significant evolution from Java 11 or Java 8. If you typically work with flatMap() and you map to inner streams in the lambda that you pass to it, mapMulti() offers you an alternative way of doing this, where you push elements to a consumer. The new features and changes in OpenJDK 15: A second incubator of a foreign-memory access API, which would let Java programs safely and efficiently access foreign memory outside of the Java. Its purpose is a bit similar to the flatMap() method. And this new update will hopefully make the stream pipeline code blocks a little bit easier to read.Īnother update to the Stream API is the mapMulti() method. The use of Commercial Features requires a separate license from Oracle. So this new toList() method that is made available in Java 16 is really just a small delight. Java SE Universal Subscription: Oracle introduced this new product in 2023. If you want to collect your stream into a mutable list, you will have to continue using a collector with the collect() function. Which means you can no longer add or remove any elements from the list returned from this terminal operation. Note that this list that we get back is an unmodifiable list. brings tons of new features to the Java as a language, its compiler, libraries, tools and the JVM. Using this new method in the code above results in a list of strings from the stream that contain a space. Stream.of("Records", "Pattern Matching", "Sealed Classes") The good news is that in Java 16, a new method was added to the Stream API which enables us to immediately call toList() as a terminal operation of a stream. Java FileSystems newFileSystem(URI uri, Map env) constructs a new file system that is identified by a URI.This fairly common practice of using the collect, and passing the Collectors.toList() to it feels like boilerplate code. As you can see, we usually invoke the terminal operation collect and pass a collector to it. ![]()
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