#INTELLIJ JAVA VERSION CODE#
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Imagine you want to persist the details of, say, a person to a file. The methods toString(), hashCode(), and equals() are also generated automatically for records. Since a record is supposed to be immutable, no setter methods are defined. Interestingly, the name of the getter method is the same as that of the data variable (it doesn’t start with get or is). For each of the components of the record Person, the compiler defines a final instance variable ( name and age).

The compilation process creates a full-blown class – a record is defined as a final class, extending the class from the core Java API.

#INTELLIJ JAVA VERSION CODE#

Access sample code used in this blog postĪll sample code used in this blog post is hosted at Github.

#INTELLIJ JAVA VERSION DOWNLOAD#

To do so, go to Platform Settings and click on SDKs, then click the ‘+’ sign at the top, choose Download JDK, then select the Vendor and version and the directory to download the JDK to. You can also download Java 16 directly from IntelliJ IDEA. You can configure it to use Java 16 by selecting 16 as the Project SDK and choosing 16 (Preview) – Sealed types in the Project language level for your Project and Modules settings. The early access versions of 2021.1 are already available. Java 16 features are supported in IntelliJ IDEA 2021.1, which is scheduled to be released this March. Let’s quickly check the configuration of IntelliJ IDEA on your system to ensure you can get the code to run it. To create a record using IntelliJ IDEA 2021.1, select Record in the New Java Class dialog box. With just one line of code, the preceding example defines a record Person with two components name and age. Though it helps cut down on boilerplate code significantly, that isn’t the primary reason for its introduction. Records introduce a new type declaration that simplifies the task of modeling your immutable data. You can use this link for a comprehensive list of the new Java 16 features. In this blog post, I will limit coverage of Java 16 to its language features, why you need them, and how you can start using them in IntelliJ IDEA. I’m personally excited about Java 16! It adds Records and Pattern Matching for instanceof as standard language features with Sealed classes continuing to be a preview feature (in the second preview).įun fact – Records was voted the most popular Java 16 language feature by 1158 developers in this Twitter poll, with Pattern Matching for instanceof second. However, you’ll see these numbers are going to increment at a much faster and predictable rate with Java’s six-month release cadence. If you are still working with Java 8, you might have mixed feelings about the news of the release of Java 16. Automatic pattern introduction on ‘extract variable’ refactoring.Simplifying usages of multiple instanceof in a code block.Pattern matching and out-of-the-box support for existing intentions in IntelliJ IDEA.Stronger code analysis with closed list of subclasses.Revisiting processing of Plant types in class Gardner.Define secure hierarchies with sealed classes.Need for creating restricted hierarchies.Sealed classes and interfaces (a preview feature).Declaring implicit or explicit static members in an inner class.Adding annotations to record components.Modifying the default behavior of a constructor in a record.Access sample code used in this blog post.Of course if you use properties, let's say you put in the pom 1.8, then if you use a 1.8 JDK in Intellij(the language level default is 1.8 or the language default was changed manually), then you will be able to code in 1.8 BUT at the mvn compile, the properties will NOT be seen and you will default to Maven 1. Most of the time you will not downgrade the version of the JDK to 1.4! (the jdk of Intellij is 1.8) and the language level of the project was changed accordingly to 1.4: In the code below, 1.4 was configured in the pom using maven-compiler-plugin The properties do not always change the language level of Intellij! To change the language level, make usage of 'maven-compiler-plugin' ALWAYS work! It is what I suggest you to use.

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