Modifier and Type	Class and Description
public static interface	TypeDescriptor.OfField< the class implementing TypeDescriptor.OfField F extends TypeDescriptor.OfField<F>> An entity that has a field type descriptor.
public static interface	TypeDescriptor.OfMethod< the type representing field type descriptors F extends TypeDescriptor.OfField<F>, the class implementing TypeDescriptor.OfMethod M extends TypeDescriptor.OfMethod<F, M>> An entity that has a method type descriptor Method descriptors conforming to JVMS 4.3.3 can be described nominally via `MethodType::describeConstable`; otherwise they cannot be described nominally.

Modifier and Type	Method and Description
public String	Returns: the descriptor string for this `TypeDescriptor` object descriptorString() Returns the descriptor string for this `TypeDescriptor` object.

descriptorString	back to summary
public String descriptorString() Returns the descriptor string for this `TypeDescriptor` object. If this `TypeDescriptor` object can be described in nominal form, then this method returns a type descriptor as specified in JVMS 4.3. The result descriptor string can be used to produce a nominal descriptor. Otherwise, the result string is not a type descriptor. No nominal descriptor can be produced from the result string. Returns:String the descriptor string for this `TypeDescriptor` object Java Virtual Machine Specification 4.3.2 Field Descriptors, 4.3.3 Method Descriptors

public Interface TypeDescriptor.OfField<F extends TypeDescriptor.OfField<F>>

Known Direct Subinterfaces

extends TypeDescriptorjava.lang.constant.ClassDesc

Known Direct Implementers

java.lang.Class

Type Parameters

<F>: the class implementing TypeDescriptor.OfField

An entity that has a field type descriptor. Field descriptors conforming to JVMS 4.3.2 can be described nominally via Class::describeConstable; otherwise they cannot be described nominally.

Since: 12
Java Virtual Machine Specification: 4.3.2 Field Descriptors

Method Summary

Modifier and Type	Method and Description
public F	Returns: the descriptor for the array type arrayType() Return a descriptor for the array type whose component type is described by this descriptor
public F	Returns: the component type, or `null` if this field descriptor does not describe an array type componentType() If this field descriptor describes an array type, return a descriptor for its component type, otherwise return `null`.
public boolean	Returns: whether this field descriptor describes an array type isArray() Does this field descriptor describe an array type?
public boolean	Returns: whether this field descriptor describes a primitive type isPrimitive() Does this field descriptor describe a primitive type (including void.)

Inherited from java.lang.invoke.TypeDescriptor:: descriptorString

Method Detail

arrayType	back to summary
public F arrayType() Return a descriptor for the array type whose component type is described by this descriptor Returns:F the descriptor for the array type

arrayType

back to summary

public F arrayType()

Return a descriptor for the array type whose component type is described by this descriptor

Returns:F: the descriptor for the array type

componentType back to summary

componentType	back to summary
public F componentType() If this field descriptor describes an array type, return a descriptor for its component type, otherwise return `null`. Returns:F the component type, or `null` if this field descriptor does not describe an array type

public F componentType()

If this field descriptor describes an array type, return a descriptor for its component type, otherwise return null.

Returns:F: the component type, or null if this field descriptor does not describe an array type

isArray	back to summary
public boolean isArray() Does this field descriptor describe an array type? Returns:boolean whether this field descriptor describes an array type

isArray

back to summary

public boolean isArray()

Does this field descriptor describe an array type?

Returns:boolean: whether this field descriptor describes an array type

isPrimitive	back to summary
public boolean isPrimitive() Does this field descriptor describe a primitive type (including void.) Returns:boolean whether this field descriptor describes a primitive type

isPrimitive

back to summary

public boolean isPrimitive()

Does this field descriptor describe a primitive type (including void.)

Returns:boolean: whether this field descriptor describes a primitive type

java.lang.invoke back to summary

public Interface TypeDescriptor.OfMethod<F extends TypeDescriptor.OfField<F>, M extends TypeDescriptor.OfMethod<F, M>>

Known Direct Subinterfaces

extends TypeDescriptorjava.lang.constant.MethodTypeDesc

Known Direct Implementers

java.lang.invoke.MethodType

Type Parameters

<F>: the type representing field type descriptors
<M>: the class implementing TypeDescriptor.OfMethod

An entity that has a method type descriptor Method descriptors conforming to JVMS 4.3.3 can be described nominally via MethodType::describeConstable; otherwise they cannot be described nominally.

Since: 12
Java Virtual Machine Specification: 4.3.2 Field Descriptors, 4.3.3 Method Descriptors

Method Summary

Modifier and Type	Method and Description
public M	Returns: the new method descriptor changeParameterType(int the index of the parameter to change index, F a field descriptor describing the new parameter type paramType) Return a method descriptor that is identical to this one, except that a single parameter type has been changed to the specified type.
public M	Returns: the new method descriptor changeReturnType(F a field descriptor for the new return type newReturn) Return a method descriptor that is identical to this one, except that the return type has been changed to the specified type
public M	Returns: the new method descriptor dropParameterTypes(int the index of the first parameter to remove start, int the index after the last parameter to remove end) Return a method descriptor that is identical to this one, except that a range of parameter types have been removed.
public M	Returns: the new method descriptor insertParameterTypes(int the index at which to insert the first inserted parameter pos, F... field descriptors describing the new parameter types to insert paramTypes) Return a method descriptor that is identical to this one, except that a range of additional parameter types have been inserted.
public F[]	Returns: field descriptors for the parameter types parameterArray() Return an array of field descriptors for the parameter types of the method type described by this descriptor
public int	Returns: the number of parameters parameterCount() Return the number of parameters in the method type
public List<F>	Returns: field descriptors for the parameter types parameterList() Return an immutable list of field descriptors for the parameter types of the method type described by this descriptor
public F	Returns: a field descriptor for the requested parameter type parameterType(int the index of the parameter i) Return a field descriptor describing the requested parameter of the method type described by this descriptor
public F	Returns: a field descriptor for the return type returnType() Return a field descriptor describing the return type of the method type described by this descriptor

Inherited from java.lang.invoke.TypeDescriptor:: descriptorString

Method Detail

changeParameterType back to summary

changeParameterType	back to summary
public 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 Exceptions NullPointerException: if any argument is `null` IndexOutOfBoundsException: if the index is outside the half-open range {[0, parameterCount)}

public 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

Exceptions

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

changeReturnType back to summary

changeReturnType	back to summary
public 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 Exceptions NullPointerException: if any argument is `null`

public 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

Exceptions

NullPointerException:: if any argument is null

dropParameterTypes back to summary

dropParameterTypes	back to summary
public 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 Exceptions IndexOutOfBoundsException: if `start` is outside the half-open range `[0, parameterCount)`, or `end` is outside the closed range `[0, parameterCount]`, or if `start > end`

public 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

Exceptions

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 back to summary

insertParameterTypes	back to summary
public 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 Annotations @SuppressWarnings:unchecked Exceptions NullPointerException: if any argument is `null` IndexOutOfBoundsException: if `pos` is outside the closed range {[0, parameterCount]}

public 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

Annotations

@SuppressWarnings:unchecked

Exceptions

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

parameterArray	back to summary
public 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

parameterArray

back to summary

public 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	back to summary
public int parameterCount() Return the number of parameters in the method type Returns:int the number of parameters

parameterCount

back to summary

public int parameterCount()

Return the number of parameters in the method type

Returns:int: the number of parameters

parameterList	back to summary
public 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

parameterList

back to summary

public 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	back to summary
public 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 Exceptions IndexOutOfBoundsException: if the index is outside the half-open range {[0, parameterCount)}

parameterType

back to summary

public 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

Exceptions

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

returnType	back to summary
public 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

returnType

back to summary

public 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

public Interface TypeDescriptor

Nested and Inner Type Summary

Method Summary

Method Detail

public Interface TypeDescriptor.OfField<F extends TypeDescriptor.OfField<F>>

Method Summary

Method Detail

public Interface TypeDescriptor.OfMethod<F extends TypeDescriptor.OfField<F>, M extends TypeDescriptor.OfMethod<F, M>>

Method Summary

Method Detail