Uses of Class
java.lang.invoke.MethodHandles.Lookup

Packages that use MethodHandles.Lookup

Package	Description
java.lang	Provides classes that are fundamental to the design of the Java programming language.
java.lang.classfile	Provides classfile parsing, generation, and transformation library.
java.lang.constant	Classes and interfaces to represent nominal descriptors for run-time entities such as classes or method handles, and classfile entities such as constant pool entries or invokedynamic call sites.
java.lang.invoke	The java.lang.invoke package provides low-level primitives for interacting with the Java Virtual Machine.
java.lang.runtime	The java.lang.runtime package provides low-level runtime support for the Java language.
jdk.dynalink	Contains interfaces and classes that are used to link an invokedynamic call site.
jdk.dynalink.linker	Contains interfaces and classes needed by language runtimes to implement their own language-specific object models and type conversions.
jdk.dynalink.linker.support	Contains classes that make it more convenient for language runtimes to implement their own language-specific object models and type conversions by providing basic implementations of some classes as well as various utilities.

Uses of MethodHandles.Lookup in java.lang

Methods in java.lang with parameters of type MethodHandles.Lookup

Modifier and Type	Method	Description
Double	Double.resolveConstantDesc(MethodHandles.Lookup lookup)	Resolves this instance as a ConstantDesc, the result of which is the instance itself.
Float	Float.resolveConstantDesc(MethodHandles.Lookup lookup)	Resolves this instance as a ConstantDesc, the result of which is the instance itself.
Integer	Integer.resolveConstantDesc(MethodHandles.Lookup lookup)	Resolves this instance as a ConstantDesc, the result of which is the instance itself.
Long	Long.resolveConstantDesc(MethodHandles.Lookup lookup)	Resolves this instance as a ConstantDesc, the result of which is the instance itself.
String	String.resolveConstantDesc(MethodHandles.Lookup lookup)	Resolves this instance as a ConstantDesc, the result of which is the instance itself.

Uses of MethodHandles.Lookup in java.lang.classfile^PREVIEW

Methods in java.lang.classfile^PREVIEW with parameters of type MethodHandles.Lookup

Modifier and Type	Method	Description
static ClassHierarchyResolverPREVIEW	ClassHierarchyResolver.ofClassLoading(MethodHandles.Lookup lookup)	Returns a ClassHierarchyResolver that extracts class hierarchy information via the Reflection API with a Lookup.

Uses of MethodHandles.Lookup in java.lang.constant

Methods in java.lang.constant with parameters of type MethodHandles.Lookup

Modifier and Type	Method	Description
CallSite	DynamicCallSiteDesc.resolveCallSiteDesc(MethodHandles.Lookup lookup)	Reflectively invokes the bootstrap method with the specified arguments, and return the resulting CallSite
Class<?>	ClassDesc.resolveConstantDesc(MethodHandles.Lookup lookup)
Object	ConstantDesc.resolveConstantDesc(MethodHandles.Lookup lookup)	Resolves this descriptor reflectively, emulating the resolution behavior of JVMS 5.4.3 and the access control behavior of JVMS 5.4.4.
T	DynamicConstantDesc.resolveConstantDesc(MethodHandles.Lookup lookup)
MethodHandle	MethodHandleDesc.resolveConstantDesc(MethodHandles.Lookup lookup)
MethodType	MethodTypeDesc.resolveConstantDesc(MethodHandles.Lookup lookup)	Resolves this descriptor reflectively, emulating the resolution behavior of JVMS 5.4.3 and the access control behavior of JVMS 5.4.4.

Uses of MethodHandles.Lookup in java.lang.invoke

Methods in java.lang.invoke that return MethodHandles.Lookup

Modifier and Type	Method	Description
MethodHandles.Lookup	MethodHandles.Lookup.defineHiddenClass(byte[] bytes, boolean initialize, MethodHandles.Lookup.ClassOption... options)	Creates a hidden class or interface from bytes, returning a Lookup on the newly created class or interface.
MethodHandles.Lookup	MethodHandles.Lookup.defineHiddenClassWithClassData(byte[] bytes, Object classData, boolean initialize, MethodHandles.Lookup.ClassOption... options)	Creates a hidden class or interface from bytes with associated class data, returning a Lookup on the newly created class or interface.
MethodHandles.Lookup	MethodHandles.Lookup.dropLookupMode(int modeToDrop)	Creates a lookup on the same lookup class which this lookup object finds members, but with a lookup mode that has lost the given lookup mode.
MethodHandles.Lookup	MethodHandles.Lookup.in(Class<?> requestedLookupClass)	Creates a lookup on the specified new lookup class.
static MethodHandles.Lookup	MethodHandles.lookup()	Returns a lookup object with full capabilities to emulate all supported bytecode behaviors of the caller.
static MethodHandles.Lookup	MethodHandles.privateLookupIn(Class<?> targetClass, MethodHandles.Lookup caller)	Returns a lookup object on a target class to emulate all supported bytecode behaviors, including private access.
static MethodHandles.Lookup	MethodHandles.publicLookup()	Returns a lookup object which is trusted minimally.

Methods in java.lang.invoke with parameters of type MethodHandles.Lookup

Modifier and Type	Method	Description
static CallSite	LambdaMetafactory.altMetafactory(MethodHandles.Lookup caller, String interfaceMethodName, MethodType factoryType, Object... args)	Facilitates the creation of simple "function objects" that implement one or more interfaces by delegation to a provided MethodHandle, after appropriate type adaptation and partial evaluation of arguments.
static VarHandle	ConstantBootstraps.arrayVarHandle(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> arrayClass)	Finds a VarHandle for an array type.
static <T> T	MethodHandles.classData(MethodHandles.Lookup caller, String name, Class<T> type)	Returns the class data associated with the lookup class of the given caller lookup object, or null.
static <T> T	MethodHandles.classDataAt(MethodHandles.Lookup caller, String name, Class<T> type, int index)	Returns the element at the specified index in the class data, if the class data associated with the lookup class of the given caller lookup object is a List.
static <E extends Enum<E>> E	ConstantBootstraps.enumConstant(MethodHandles.Lookup lookup, String name, Class<E> type)	Returns an enum constant of the type specified by type with the name specified by name.
static Object	ConstantBootstraps.explicitCast(MethodHandles.Lookup lookup, String name, Class<?> dstType, Object value)	Applies a conversion from a source type to a destination type.
static VarHandle	ConstantBootstraps.fieldVarHandle(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> declaringClass, Class<?> fieldType)	Finds a VarHandle for an instance field.
static Object	ConstantBootstraps.getStaticFinal(MethodHandles.Lookup lookup, String name, Class<?> type)	Returns the value of a static final field declared in the class which is the same as the field's type (or, for primitive-valued fields, declared in the wrapper class.)
static Object	ConstantBootstraps.getStaticFinal(MethodHandles.Lookup lookup, String name, Class<?> type, Class<?> declaringClass)	Returns the value of a static final field.
static Object	ConstantBootstraps.invoke(MethodHandles.Lookup lookup, String name, Class<?> type, MethodHandle handle, Object... args)	Returns the result of invoking a method handle with the provided arguments.
static CallSite	StringConcatFactory.makeConcat(MethodHandles.Lookup lookup, String name, MethodType concatType)	Facilitates the creation of optimized String concatenation methods, that can be used to efficiently concatenate a known number of arguments of known types, possibly after type adaptation and partial evaluation of arguments.
static CallSite	StringConcatFactory.makeConcatWithConstants(MethodHandles.Lookup lookup, String name, MethodType concatType, String recipe, Object... constants)	Facilitates the creation of optimized String concatenation methods, that can be used to efficiently concatenate a known number of arguments of known types, possibly after type adaptation and partial evaluation of arguments.
static CallSite	LambdaMetafactory.metafactory(MethodHandles.Lookup caller, String interfaceMethodName, MethodType factoryType, MethodType interfaceMethodType, MethodHandle implementation, MethodType dynamicMethodType)	Facilitates the creation of simple "function objects" that implement one or more interfaces by delegation to a provided MethodHandle, after appropriate type adaptation and partial evaluation of arguments.
static Object	ConstantBootstraps.nullConstant(MethodHandles.Lookup lookup, String name, Class<?> type)	Returns a null object reference for the reference type specified by type.
static Class<?>	ConstantBootstraps.primitiveClass(MethodHandles.Lookup lookup, String name, Class<?> type)	Returns a Class mirror for the primitive type whose type descriptor is specified by name.
static MethodHandles.Lookup	MethodHandles.privateLookupIn(Class<?> targetClass, MethodHandles.Lookup caller)	Returns a lookup object on a target class to emulate all supported bytecode behaviors, including private access.
<T extends Member> T	MethodHandleInfo.reflectAs(Class<T> expected, MethodHandles.Lookup lookup)	Reflects the underlying member as a method, constructor, or field object.
static VarHandle	ConstantBootstraps.staticFieldVarHandle(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> declaringClass, Class<?> fieldType)	Finds a VarHandle for a static field.

Uses of MethodHandles.Lookup in java.lang.runtime

Methods in java.lang.runtime with parameters of type MethodHandles.Lookup

Modifier and Type	Method	Description
static Object	ObjectMethods.bootstrap(MethodHandles.Lookup lookup, String methodName, TypeDescriptor type, Class<?> recordClass, String names, MethodHandle... getters)	Bootstrap method to generate the Object.equals(Object), Object.hashCode(), and Object.toString() methods, based on a description of the component names and accessor methods, for either invokedynamic call sites or dynamic constant pool entries.
static CallSite	SwitchBootstraps.enumSwitch(MethodHandles.Lookup lookup, String invocationName, MethodType invocationType, Object... labels)	Bootstrap method for linking an invokedynamic call site that implements a switch on a target of an enum type.
static CallSite	SwitchBootstraps.typeSwitch(MethodHandles.Lookup lookup, String invocationName, MethodType invocationType, Object... labels)	Bootstrap method for linking an invokedynamic call site that implements a switch on a target of a reference type.

Uses of MethodHandles.Lookup in jdk.dynalink

Methods in jdk.dynalink that return MethodHandles.Lookup

Modifier and Type	Method	Description
final MethodHandles.Lookup	SecureLookupSupplier.getLookup()	Returns the lookup secured by this SecureLookupSupplier.
protected final MethodHandles.Lookup	SecureLookupSupplier.getLookupPrivileged()	Returns the value of SecureLookupSupplier.getLookup() without a security check.

Constructors in jdk.dynalink with parameters of type MethodHandles.Lookup

Modifier	Constructor	Description
	CallSiteDescriptor(MethodHandles.Lookup lookup, Operation operation, MethodType methodType)	Creates a new call site descriptor.
	SecureLookupSupplier(MethodHandles.Lookup lookup)	Creates a new secure lookup supplier, securing the passed lookup.

Uses of MethodHandles.Lookup in jdk.dynalink.linker

Method parameters in jdk.dynalink.linker with type arguments of type MethodHandles.Lookup

Modifier and Type	Method	Description
GuardedInvocation	GuardingTypeConverterFactory.convertToType(Class<?> sourceType, Class<?> targetType, Supplier<MethodHandles.Lookup> lookupSupplier)	Returns a guarded type conversion that receives a value of the specified source type and returns a value converted to the specified target type.

Uses of MethodHandles.Lookup in jdk.dynalink.linker.support

Methods in jdk.dynalink.linker.support with parameters of type MethodHandles.Lookup

Modifier and Type	Method	Description
static MethodHandle	Lookup.findOwnSpecial(MethodHandles.Lookup lookup, String name, Class<?> rtype, Class<?>... ptypes)	Given a lookup, finds using Lookup.findSpecial(Class, String, MethodType) a method on that lookup's class.
static MethodHandle	Lookup.findOwnStatic(MethodHandles.Lookup lookup, String name, Class<?> rtype, Class<?>... ptypes)	Given a lookup, finds using Lookup.findStatic(Class, String, MethodType) a method on that lookup's class.
static MethodHandle	Lookup.unreflect(MethodHandles.Lookup lookup, Method m)	Performs a unreflect(Method), converting any encountered IllegalAccessException into an IllegalAccessError.
static MethodHandle	Lookup.unreflectConstructor(MethodHandles.Lookup lookup, Constructor<?> c)	Performs a unreflectConstructor(Constructor), converting any encountered IllegalAccessException into an IllegalAccessError.

Constructors in jdk.dynalink.linker.support with parameters of type MethodHandles.Lookup

Modifier	Constructor	Description
	Lookup(MethodHandles.Lookup lookup)	Creates a new instance, bound to an instance of MethodHandles.Lookup.