Added in API level 34

Summary: Methods | Inherited Methods

TypeDescriptor.OfMethod

public static interface TypeDescriptor.OfMethod
implements TypeDescriptor

java.lang.invoke.TypeDescriptor.OfMethod<F extends java.lang.invoke.TypeDescriptor.OfField<F>, M extends java.lang.invoke.TypeDescriptor.OfMethod<F, M>>

Known indirect subclasses MethodType 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.

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An entity that has a method type descriptor Method descriptors conforming to JVMS {@jvms 4.3.3} can be described

Summary

Public methods
abstract M	changeParameterType(int index, F paramType) Return a method descriptor that is identical to this one, except that a single parameter type has been changed to the specified type.
abstract M	changeReturnType(F newReturn) Return a method descriptor that is identical to this one, except that the return type has been changed to the specified type
abstract M	dropParameterTypes(int start, int end) Return a method descriptor that is identical to this one, except that a range of parameter types have been removed.
abstract M	insertParameterTypes(int pos, F... paramTypes) Return a method descriptor that is identical to this one, except that a range of additional parameter types have been inserted.
abstract F[]	parameterArray() Return an array of field descriptors for the parameter types of the method type described by this descriptor
abstract int	parameterCount() Return the number of parameters in the method type
abstract List<F>	parameterList() Return an immutable list of field descriptors for the parameter types of the method type described by this descriptor
abstract F	parameterType(int i) Return a field descriptor describing the requested parameter of the method type described by this descriptor
abstract F	returnType() Return a field descriptor describing the return type of the method type described by this descriptor

Inherited methods
From interface java.lang.invoke.TypeDescriptor abstract String descriptorString() Returns the descriptor string for this TypeDescriptor object.

Public methods

changeParameterType

Added in API level 34

public abstract M changeParameterType (int index, 
                F paramType)

Return a method descriptor that is identical to this one, except that a single parameter type has been changed to the specified type.

Parameters
index	int: the index of the parameter to change
paramType	F: a field descriptor describing the new parameter type

Returns
M	the new method descriptor

Throws
NullPointerException	if any argument is null
IndexOutOfBoundsException	if the index is outside the half-open range {[0, parameterCount)}

changeReturnType

Added in API level 34

public abstract M changeReturnType (F newReturn)

Return a method descriptor that is identical to this one, except that the return type has been changed to the specified type

Parameters
newReturn	F: a field descriptor for the new return type

Returns
M	the new method descriptor

Throws
NullPointerException	if any argument is null

dropParameterTypes

Added in API level 34

public abstract M dropParameterTypes (int start, 
                int end)

Return a method descriptor that is identical to this one, except that a range of parameter types have been removed.

Parameters
start	int: the index of the first parameter to remove
end	int: the index after the last parameter to remove

Returns
M	the new method descriptor

Throws
IndexOutOfBoundsException	if start is outside the half-open range [0, parameterCount), or end is outside the closed range [0, parameterCount], or if start > end

insertParameterTypes

Added in API level 34

public abstract M insertParameterTypes (int pos, 
                F... paramTypes)

Return a method descriptor that is identical to this one, except that a range of additional parameter types have been inserted.

Parameters
pos	int: the index at which to insert the first inserted parameter
paramTypes	F: field descriptors describing the new parameter types to insert

Returns
M	the new method descriptor

Throws
NullPointerException	if any argument is null
IndexOutOfBoundsException	if pos is outside the closed range {[0, parameterCount]}

parameterArray

Added in API level 34

public abstract F[] parameterArray ()

Return an array of field descriptors for the parameter types of the method type described by this descriptor

Returns
F[]	field descriptors for the parameter types

parameterCount

Added in API level 34

public abstract int parameterCount ()

Return the number of parameters in the method type

Returns
int	the number of parameters

parameterList

Added in API level 34

public abstract List<F> parameterList ()

Return an immutable list of field descriptors for the parameter types of the method type described by this descriptor

Returns
List<F>	field descriptors for the parameter types

parameterType

Added in API level 34

public abstract F parameterType (int i)

Return a field descriptor describing the requested parameter of the method type described by this descriptor

Parameters
i	int: the index of the parameter

Returns
F	a field descriptor for the requested parameter type

Throws
IndexOutOfBoundsException	if the index is outside the half-open range {[0, parameterCount)}

returnType

Added in API level 34

public abstract F returnType ()

Return a field descriptor describing the return type of the method type described by this descriptor

Returns
F	a field descriptor for the return type