Interface MethodHandleEntry

All Superinterfaces:: LoadableConstantEntry, PoolEntry

public sealed interface MethodHandleEntry extends LoadableConstantEntry

Models a CONSTANT_MethodHandle_info structure, or a symbolic reference to a method handle, in the constant pool of a class file. The method handle directly accesses an accessible method, field, or constructor.

The use of a MethodHandleEntry is modeled by a DirectMethodHandleDesc. Conversions are through ConstantPoolBuilder.methodHandleEntry(DirectMethodHandleDesc) and asSymbol().

A method handle entry is composite:

MethodHandleEntry(
    int refKind,
    MemberRefEntry reference
)

where refKind is in the range [1, 9].

See Java Virtual Machine Specification:

4.4.8 The CONSTANT_MethodHandle_info Structure

Since:

See Also:

Field Summary

Fields declared in interface PoolEntry

TAG_CLASS, TAG_DOUBLE, TAG_DYNAMIC, TAG_FIELDREF, TAG_FLOAT, TAG_INTEGER, TAG_INTERFACE_METHODREF, TAG_INVOKE_DYNAMIC, TAG_LONG, TAG_METHOD_HANDLE, TAG_METHOD_TYPE, TAG_METHODREF, TAG_MODULE, TAG_NAME_AND_TYPE, TAG_PACKAGE, TAG_STRING, TAG_UTF8

Modifier and Type	Field	Description
`static final int`	`TAG_CLASS`	The tag for `CONSTANT_Class` constant kind.
`static final int`	`TAG_DOUBLE`	The tag for `CONSTANT_Double` constant kind.
`static final int`	`TAG_DYNAMIC`	The tag for `CONSTANT_Dynamic` constant kind.
`static final int`	`TAG_FIELDREF`	The tag for `CONSTANT_Fieldref` constant kind.
`static final int`	`TAG_FLOAT`	The tag for `CONSTANT_Float` constant kind.
`static final int`	`TAG_INTEGER`	The tag for `CONSTANT_Integer` constant kind.
`static final int`	`TAG_INTERFACE_METHODREF`	The tag for `CONSTANT_InterfaceMethodref` constant kind.
`static final int`	`TAG_INVOKE_DYNAMIC`	The tag for `CONSTANT_InvokeDynamic` constant kind.
`static final int`	`TAG_LONG`	The tag for `CONSTANT_Long` constant kind.
`static final int`	`TAG_METHOD_HANDLE`	The tag for `CONSTANT_MethodHandle` constant kind.
`static final int`	`TAG_METHOD_TYPE`	The tag for `CONSTANT_MethodType` constant kind.
`static final int`	`TAG_METHODREF`	The tag for `CONSTANT_Methodref` constant kind.
`static final int`	`TAG_MODULE`	The tag for `CONSTANT_Module` constant kind.
`static final int`	`TAG_NAME_AND_TYPE`	The tag for `CONSTANT_NameAndType` constant kind.
`static final int`	`TAG_PACKAGE`	The tag for `CONSTANT_Package` constant kind.
`static final int`	`TAG_STRING`	The tag for `CONSTANT_String` constant kind.
`static final int`	`TAG_UTF8`	The tag for `CONSTANT_Utf8` constant kind.

Method Summary

Modifier and Type	Method	Description
`DirectMethodHandleDesc`	`asSymbol()`	Returns a symbolic descriptor for this method handle.
`default ConstantDesc`	`constantValue()`	Returns a symbolic descriptor of this constant.
`int`	`kind()`	Returns the reference kind of this method handle (JVMS Â§4.4.8).
`MemberRefEntry`	`reference()`	Returns the constant pool entry describing the field or method, according to the reference kind.

Methods declared in interface LoadableConstantEntry

typeKind

Modifier and Type	Method	Description
`default TypeKind`	`typeKind()`	Returns the data type of this constant.

Methods declared in interface PoolEntry

constantPool, index, tag, width

Modifier and Type	Method	Description
`ConstantPool`	`constantPool()`	Returns the constant pool this entry is from.
`int`	`index()`	Returns the index within the constant pool corresponding to this entry.
`int`	`tag()`	Returns the constant pool tag that describes the type of this entry.
`int`	`width()`	Returns the number of constant pool slots this entry consumes.

Method Details

constantValue

default ConstantDesc constantValue()

Returns a symbolic descriptor of this constant.

This is equivalent to asSymbol().

Specified by:

constantValue in interface LoadableConstantEntry

Returns:

a symbolic descriptor of this constant

See Also:

kind

int kind()

Returns the reference kind of this method handle (JVMS Â§4.4.8).

Returns:

the reference kind of this method handle (JVMS Â§4.4.8)

See Also:

reference

MemberRefEntry reference()

Returns the constant pool entry describing the field or method, according to the reference kind.

Returns:: the constant pool entry describing the field or method, according to the reference kind

asSymbol

DirectMethodHandleDesc asSymbol()

Returns a symbolic descriptor for this method handle.

Returns:

a symbolic descriptor for this method handle

See Also:

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