Interface PoolEntry

All Known Subinterfaces:

AnnotationConstantValueEntryPREVIEW, ClassEntryPREVIEW, ConstantDynamicEntryPREVIEW, ConstantValueEntryPREVIEW, DoubleEntryPREVIEW, DynamicConstantPoolEntryPREVIEW, FieldRefEntryPREVIEW, FloatEntryPREVIEW, IntegerEntryPREVIEW, InterfaceMethodRefEntryPREVIEW, InvokeDynamicEntryPREVIEW, LoadableConstantEntryPREVIEW, LongEntryPREVIEW, MemberRefEntryPREVIEW, MethodHandleEntryPREVIEW, MethodRefEntryPREVIEW, MethodTypeEntryPREVIEW, ModuleEntryPREVIEW, NameAndTypeEntryPREVIEW, PackageEntryPREVIEW, StringEntryPREVIEW, Utf8EntryPREVIEW

public sealed interface PoolEntry
permits AnnotationConstantValueEntryPREVIEW, DynamicConstantPoolEntryPREVIEW, LoadableConstantEntryPREVIEW, MemberRefEntryPREVIEW, ModuleEntryPREVIEW, NameAndTypeEntryPREVIEW, PackageEntryPREVIEW

PoolEntry is a preview API of the Java platform.

Programs can only use PoolEntry when preview features are enabled.

Preview features may be removed in a future release, or upgraded to permanent features of the Java platform.

Models an entry in the constant pool of a classfile.

Since:

22

Field Summary

Fields

Modifier and Type	Field	Description
static final int	TAG_CLASS	The tag for CONSTANT_ClassPREVIEW constant kind.
static final int	TAG_DOUBLE	The tag for CONSTANT_DoublePREVIEW constant kind.
static final int	TAG_DYNAMIC	The tag for CONSTANT_DynamicPREVIEW constant kind.
static final int	TAG_FIELDREF	The tag for CONSTANT_FieldrefPREVIEW constant kind.
static final int	TAG_FLOAT	The tag for CONSTANT_FloatPREVIEW constant kind.
static final int	TAG_INTEGER	The tag for CONSTANT_IntegerPREVIEW constant kind.
static final int	TAG_INTERFACE_METHODREF	The tag for CONSTANT_InterfaceMethodrefPREVIEW constant kind.
static final int	TAG_INVOKE_DYNAMIC	The tag for CONSTANT_InvokeDynamicPREVIEW constant kind.
static final int	TAG_LONG	The tag for CONSTANT_LongPREVIEW constant kind.
static final int	TAG_METHOD_HANDLE	The tag for CONSTANT_MethodHandlePREVIEW constant kind.
static final int	TAG_METHOD_TYPE	The tag for CONSTANT_MethodTypePREVIEW constant kind.
static final int	TAG_METHODREF	The tag for CONSTANT_MethodrefPREVIEW constant kind.
static final int	TAG_MODULE	The tag for CONSTANT_ModulePREVIEW constant kind.
static final int	TAG_NAME_AND_TYPE	The tag for CONSTANT_NameAndTypePREVIEW constant kind.
static final int	TAG_PACKAGE	The tag for CONSTANT_PackagePREVIEW constant kind.
static final int	TAG_STRING	The tag for CONSTANT_StringPREVIEW constant kind.
static final int	TAG_UTF8	The tag for CONSTANT_Utf8PREVIEW constant kind.

Method Summary

Modifier and Type	Method	Description
ConstantPoolPREVIEW	constantPool()	Returns the constant pool this entry is from.
int	index()	Returns the index within the constant pool corresponding to this entry.
byte	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.

Field Details

TAG_CLASS

static final int TAG_CLASS

The tag for CONSTANT_Class^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_DOUBLE

static final int TAG_DOUBLE

The tag for CONSTANT_Double^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_DYNAMIC

static final int TAG_DYNAMIC

The tag for CONSTANT_Dynamic^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_FIELDREF

static final int TAG_FIELDREF

The tag for CONSTANT_Fieldref^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_FLOAT

static final int TAG_FLOAT

The tag for CONSTANT_Float^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_INTEGER

static final int TAG_INTEGER

The tag for CONSTANT_Integer^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_INTERFACE_METHODREF

static final int TAG_INTERFACE_METHODREF

The tag for CONSTANT_InterfaceMethodref^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_INVOKE_DYNAMIC

static final int TAG_INVOKE_DYNAMIC

The tag for CONSTANT_InvokeDynamic^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_LONG

static final int TAG_LONG

The tag for CONSTANT_Long^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_METHOD_HANDLE

static final int TAG_METHOD_HANDLE

The tag for CONSTANT_MethodHandle^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_METHODREF

static final int TAG_METHODREF

The tag for CONSTANT_Methodref^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_METHOD_TYPE

static final int TAG_METHOD_TYPE

The tag for CONSTANT_MethodType^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_MODULE

static final int TAG_MODULE

The tag for CONSTANT_Module^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_NAME_AND_TYPE

static final int TAG_NAME_AND_TYPE

The tag for CONSTANT_NameAndType^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_PACKAGE

static final int TAG_PACKAGE

The tag for CONSTANT_Package^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_STRING

static final int TAG_STRING

The tag for CONSTANT_String^PREVIEW constant kind.

See Also:

• Constant Field Values

TAG_UTF8

static final int TAG_UTF8

The tag for CONSTANT_Utf8^PREVIEW constant kind.

See Also:

• Constant Field Values

Method Details

constantPool

ConstantPoolPREVIEW constantPool()

Returns the constant pool this entry is from.

Returns:

the constant pool this entry is from

tag

byte tag()

Returns the constant pool tag that describes the type of this entry.

API Note:

TAG_-prefixed constants in this class, such as TAG_UTF8, describe the possible return values of this method.

Returns:

the constant pool tag that describes the type of this entry

index

int index()

Returns the index within the constant pool corresponding to this entry.

Returns:

the index within the constant pool corresponding to this entry

width

int width()

Returns the number of constant pool slots this entry consumes.

Returns:

the number of constant pool slots this entry consumes