WebDec 24, 2024 · Java 17 LTS is the latest long-term support release for the Java SE platform and it was released on September 15, 2024. Switch expression features Pattern matching WebOct 19, 2024 · Before the newest version of the openJdk (version 17) the common Nullpointer Exception looked something like this in your stack-trace: …
Bruce Eckel on switch expressions, arrow syntax, and case null
WebApr 7, 2024 · In Java 13 enhanced switch is a preview feature, which needs to be explicitly enabled. You can now use case for multiple values. In addition to the traditional switch statement, you can use switch expression, which returns a value. To return a value from a switch expression you can use: break in Java 12. WebOct 6, 2024 · $ java -version openjdk version "17" 2024-09-14 OpenJDK Runtime Environment 21.9 (build 17+35) OpenJDK 64-Bit Server VM 21.9 (build 17+35, mixed mode, sharing) $ javac --version javac 17 $ javac --release 17 --enable-preview Main.java Note: Main.java uses preview features of Java SE 17. rising amounts
A Guide to Java Enums Baeldung
WebJul 22, 2024 · Since Java 17, there is a new feature for preview, support for type pattern matching in switch statements. It is a further improvement on writing if else chains for type checking. ... Previously if you passed a null to a switch Null Pointer Exception would rise. That behavior is kept to ensure backward compatibility unless there is an explicit ... WebMay 6, 2024 · The case null clause in switch JDK 17 adds the (preview) ability to include the previously illegal case null clause in a switch. Historically, you had to check for null cases outside the switch, as shown by old () in the code below. In checkNull () you see that null is now a legitimate case for a switch using both arrow and colon syntax. rising air pollution