Module java.compiler

# Package javax.lang.model

package javax.lang.model
Types and hierarchies of packages comprising a Java language model, a model of the declarations and types of the Java programming language. The members of this package and its subpackages are for use in language modeling and language processing tasks and APIs including, but not limited to, the annotation processing framework.

This language model follows a mirror-based design; see

> Gilad Bracha and David Ungar. Mirrors: Design Principles for Meta-level Facilities of Object-Oriented Programming Languages. In Proc. of the ACM Conf. on Object-Oriented Programming, Systems, Languages and Applications, October 2004.

In particular, the model makes a distinction between declared language constructs, like the element representing `java.util.Set`, and the family of types that may be associated with an element, like the raw type `java.util.Set`, `java.util.Set<String>`, and `java.util.Set<T>`.

Unless otherwise specified, methods in this package will throw a `NullPointerException` if given a `null` argument.

Since:
  1.6

Related Packages
Package
Description
javax.lang.model.element
Interfaces used to model elements of the Java programming language.
javax.lang.model.type
Interfaces used to model Java programming language types.
javax.lang.model.util
Utilities to assist in the processing of program elements and types.
Class
Description
AnnotatedConstruct
Represents a construct that can be annotated.
SourceVersion
Source versions of the Java programming language.
UnknownEntityException
Superclass of exceptions which indicate that an unknown kind of entity was encountered.