InfoWorld

Basic and advanced pattern matching in Java

Learn how to use pattern-matching features in your Java programs, including pattern matching with switch statements, when clauses, sealed classes, and a preview of primitive type pattern matching in ...
InfoQ

JDK 16で確定された Records と Instanceof のパターンマッチング

何千人もの開発者が、InfoQのミニブック「Practical Guide to Building an API Back End with Spring Boot」から、Spring Bootを使ったREST API構築の基礎を学んだ。この本では、出版時に新しくリリースされたバージョンである Spring Boot 2 を使用している。しかし、Spring Boot3が最近 ...
GitHub

mvpjava/java14-instanceof-tutorial

The instanceof operator in Java 14 has been extended to allow for what's called a "test type pattern" which allows for Pattern Matching to be used. This test type pattern is a combination of a ...
Computerworld

Problems when I use instanceof together with @EJB, why is that?

I got a servlet in a maven project called "web-client" (that got dependency to "interface"-project, but not to "server"-project). The servlet uses the bean like this code below, remark that the ...
InfoWorld

Polymorphism and inheritance in Java

We will focus on the relationship between polymorphism and Java inheritance. The main thing to keep in mind is that polymorphism requires an inheritance or an interface implementation. You can see ...
GitHub

Enhanced instanceOf not supported (IntelliJ IDEA plugin)

IntelliJ IDEA: 2021.2.3 (Ultimate Version) Build #IU-212.5457.46, built on October 12, 2021. google-java-format plugin version: 1.10.0.0 Windows 10 All is explained in the title. What I see precisely: ...