# java.lang.invoke Added in[API level 26](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) # java.lang.invoke ## Interfaces |----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------| | [MethodHandleInfo](https://developer.android.com/reference/java/lang/invoke/MethodHandleInfo) | A symbolic reference obtained by cracking a direct method handle into its consitutent symbolic parts. | | [TypeDescriptor](https://developer.android.com/reference/java/lang/invoke/TypeDescriptor) | An entity that has a type descriptor. | | [TypeDescriptor.OfField](https://developer.android.com/reference/java/lang/invoke/TypeDescriptor.OfField)\\> | An entity that has a field type descriptor. | | [TypeDescriptor.OfMethod](https://developer.android.com/reference/java/lang/invoke/TypeDescriptor.OfMethod)\, M extends[OfMethod](https://developer.android.com/reference/java/lang/invoke/TypeDescriptor.OfMethod)\\> | An entity that has a method type descriptor Method descriptors conforming to JVMS {@jvms 4.3.3} can be described | ## Classes |-------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [CallSite](https://developer.android.com/reference/java/lang/invoke/CallSite) | A`CallSite`is a holder for a variable[MethodHandle](https://developer.android.com/reference/java/lang/invoke/MethodHandle), which is called its`target`. | | [ConstantCallSite](https://developer.android.com/reference/java/lang/invoke/ConstantCallSite) | A`ConstantCallSite`is a[CallSite](https://developer.android.com/reference/java/lang/invoke/CallSite)whose target is permanent, and can never be changed. | | [MethodHandle](https://developer.android.com/reference/java/lang/invoke/MethodHandle) | A method handle is a typed, directly executable reference to an underlying method, constructor, field, or similar low-level operation, with optional transformations of arguments or return values. | | [MethodHandles](https://developer.android.com/reference/java/lang/invoke/MethodHandles) | This class consists exclusively of static methods that operate on or return method handles. | | [MethodHandles.Lookup](https://developer.android.com/reference/java/lang/invoke/MethodHandles.Lookup) | A*lookup object*is a factory for creating method handles, when the creation requires access checking. | | [MethodType](https://developer.android.com/reference/java/lang/invoke/MethodType) | A method type represents the arguments and return type accepted and returned by a method handle, or the arguments and return type passed and expected by a method handle caller. | | [MutableCallSite](https://developer.android.com/reference/java/lang/invoke/MutableCallSite) | A`MutableCallSite`is a[CallSite](https://developer.android.com/reference/java/lang/invoke/CallSite)whose target variable behaves like an ordinary field. | | [VarHandle](https://developer.android.com/reference/java/lang/invoke/VarHandle) | A VarHandle is a dynamically strongly typed reference to a variable, or to a parametrically-defined family of variables, including static fields, non-static fields, array elements, or components of an off-heap data structure. | | [VolatileCallSite](https://developer.android.com/reference/java/lang/invoke/VolatileCallSite) | A`VolatileCallSite`is a[CallSite](https://developer.android.com/reference/java/lang/invoke/CallSite)whose target acts like a volatile variable. | ## Enums |-------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------| | [VarHandle.AccessMode](https://developer.android.com/reference/java/lang/invoke/VarHandle.AccessMode) | The set of access modes that specify how a variable, referenced by a VarHandle, is accessed. | ## Exceptions |-----------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------| | [LambdaConversionException](https://developer.android.com/reference/java/lang/invoke/LambdaConversionException) | LambdaConversionException | | [StringConcatException](https://developer.android.com/reference/java/lang/invoke/StringConcatException) | StringConcatException is thrown by[ERROR(/StringConcatFactory)](https://developer.android.com/)when linkage invariants are violated. | | [WrongMethodTypeException](https://developer.android.com/reference/java/lang/invoke/WrongMethodTypeException) | Thrown to indicate that code has attempted to call a method handle via the wrong method type. | - ## Interfaces - [MethodHandleInfo](https://developer.android.com/reference/java/lang/invoke/MethodHandleInfo) - [TypeDescriptor](https://developer.android.com/reference/java/lang/invoke/TypeDescriptor) - [TypeDescriptor.OfField](https://developer.android.com/reference/java/lang/invoke/TypeDescriptor.OfField) - [TypeDescriptor.OfMethod](https://developer.android.com/reference/java/lang/invoke/TypeDescriptor.OfMethod) - ## Classes - [CallSite](https://developer.android.com/reference/java/lang/invoke/CallSite) - [ConstantCallSite](https://developer.android.com/reference/java/lang/invoke/ConstantCallSite) - [MethodHandle](https://developer.android.com/reference/java/lang/invoke/MethodHandle) - [MethodHandles](https://developer.android.com/reference/java/lang/invoke/MethodHandles) - [MethodHandles.Lookup](https://developer.android.com/reference/java/lang/invoke/MethodHandles.Lookup) - [MethodType](https://developer.android.com/reference/java/lang/invoke/MethodType) - [MutableCallSite](https://developer.android.com/reference/java/lang/invoke/MutableCallSite) - [VarHandle](https://developer.android.com/reference/java/lang/invoke/VarHandle) - [VolatileCallSite](https://developer.android.com/reference/java/lang/invoke/VolatileCallSite) - ## Enums - [VarHandle.AccessMode](https://developer.android.com/reference/java/lang/invoke/VarHandle.AccessMode) - ## Exceptions - [LambdaConversionException](https://developer.android.com/reference/java/lang/invoke/LambdaConversionException) - [StringConcatException](https://developer.android.com/reference/java/lang/invoke/StringConcatException) - [WrongMethodTypeException](https://developer.android.com/reference/java/lang/invoke/WrongMethodTypeException)