| Package | Description | 
|---|---|
| java.lang | Provides classes that are fundamental to the design of the Java
 programming language. | 
| java.lang.reflect | Provides classes and interfaces for obtaining reflective
 information about classes and objects. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | Class<T>Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | TypeVariable<D extends GenericDeclaration>TypeVariable is the common superinterface for type variables of kinds. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | Constructor<T>Constructorprovides information about, and access to, a single
 constructor for a class. | 
| class  | ExecutableA shared superclass for the common functionality of  MethodandConstructor. | 
| class  | MethodA  Methodprovides information about, and access to, a single method
 on a class or interface. | 
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