To create a record using IntelliJ IDEA 2020.1, select ‘Record (Preview Feature)’ 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 significantly on the boilerplate code, this isn’t the primary reason for its introduction. Records introduce a new type declaration in Java which simplifies the task of modeling your data as (shallowly immutable) data.
In this article, I will cover what records are, talk about pattern matching for instanceof, new features in Text Blocks, and explain how to use them all in IntelliJ IDEA. Switch Expressions have been added as a standard language feature in Java 14, with no changes from its previous version (it was introduced in Java 12 as a preview language feature). Released as a preview language feature in Java 13, Text Blocks add new escape sequences to improve the processing of whitespaces in multi-line string values. After introducing a binding variable, you don’t need additional variables or explicit casting, which also makes your code safe and concise to write and read. The usage of the instanceof operator is simplified with Pattern Matching for instanceof. Don’t worry – the compiler does the heavy lifting to add the methods required to make the class work for you. By using just a single line of code, you can model your data with ease. With Records, you get a compact syntax for declaring data classes. It also adds Switch Expressions as a Standard language Feature. It includes Records and Pattern Matching for instanceof as preview language features, and Text Blocks in the second preview. Java 14 packs a lot of Java language features for you.
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