JShell is the REPL that allows us to run individual lines of code, or even scripts, in Java. New methods on Optional give even more options for coding in a functional style when using an Optional instead of having to use clumsy ifstatements. Predicate::not provides an easy way to negate predicate lambdas or method references, again reducing the boilerplate in our code. The factory methods also create unmodifiable collections, making them safer to use.Ĭollecting to unmodifiable collections is possible using the new Collector for Streams operations to put the results into an immutable collection. It’s not a fix-all for all readability problems, but using it at the right time can help the reader of the code focus on the business logic (whatit’s doing) rather than boilerplate (howit’s doing it).Ĭonvenience Factory Methods for Collections make it significantly easier to create collections like lists, maps and sets. Local-variable type inference ( var) is a nice example of syntactic sugar that helps reduce boilerplate code. I’ve picked out some key features developers have told me have made their lives easier when they’re working with the latest version of Java. Since Java 8 we’ve had plenty of new features, and also some new tools that can change the way we work. Learn more.Īs developers, we’re most interested in the new language features or APIs that come in each update to the language. Microsoft Azure supports your workload with abundant choices, whether you're working on a Java app, app server, or framework. Once "over the hump" of this first upgrade, it's worth at least testing the application on the latest version of Java every 6 months, for example in CI.
These changes may impact your application but there is a clear path to avoid these problems. APIs that are not core to the JDK have also been removed in Java 11.
Since Java 8 a number of useful new language features have been introduced, along with new tooling, and performance improvements particularly for garbage collection.
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