JVM, Class Files, and the CLEmitter - Introduction to Compiler Construction in a Java World - page 323

FIGURE D.3 A recipe for creating a class file.
D.4.2 CLEmitter Interface
The CLEmitter interface support: creating a Java class representation in memory; adding
inner classes, fields, methods, exception handlers, and attributes to the class; and converting
the in-memory representation of the class to a java.lang.Class representation, both in
memory and on the file system.