Sealed classes, proposed in JEP 409 and available since Java 17, let developers limit and control how deeply a component's type hierarchy can extend. With sealed classes, a developer can essentially ...

A hierarchy like Shape ... (See Effective Java, "Prefer interfaces to abstract classes".) With sealed interfaces, library authors no longer have to choose between using polymorphism as an ...

The question I very often have is: which objects (recursively) are loaded in memory if a particular object is created? If you know Call Hierarchy plugin, you will find the Data Hierarchy very similar.

especially for inheritance among classes. The paper presents a compile-time flow-sensitive context-insensitive alias analysis algorithm with type information for Java. First, we propose an aliased ...