Learn the four types of polymorphism in Java, then start using subtype polymorphism to execute different forms of the same Java method.

Pattern Matching for instanceof enhances Java with pattern matching for the instanceof operator. Java Record enhances Java with records, which are classes that act as transparent carriers for ...

Provide warnings about improper attempts to synchronize on instances of any value-based classes in the Java Platform. JEP 394: Pattern Matching for instanceof: Enhances the Java programming language ...

These are Records - which has been in preview since Java 14, released in March 2020 - and Pattern Matching for the instanceof operator. Records are Java classes that act as transparent carriers ...