Dynamic features of Java

[algomaster99]

. In particular, a class loader may cache binary representations of classes and interfaces, prefetch them based on expected usage, or load a group of related classes together. These activities may not be completely transparent to a running application if, for example, a newly compiled version of a class is not found because an older version is cached by a class loader.

Reference: https://docs.oracle.com/javase/specs/jls/se21/html/jls-12.html#jls-12.2.1

[algomaster99]

For example, a class could be downloaded across a network, generated on the fly, or extracted from an encrypted file.

Dynamic classloading in Java: https://docs.oracle.com/javase/specs/jvms/se21/html/jvms-5.html#jvms-5.3

EDIT: Cited