Interface DoubleEntry

All Superinterfaces:

AnnotationConstantValueEntry, ConstantValueEntry, LoadableConstantEntry, PoolEntry

public sealed interface DoubleEntry
extends AnnotationConstantValueEntry, ConstantValueEntry

Models a CONSTANT_Double_info structure, representing a double constant, in the constant pool of a class file.

The use of a DoubleEntry is modeled by a double. Conversions are through ConstantPoolBuilder.doubleEntry(double) and doubleValue(). In the conversions, all NaN values of the double may or may not be collapsed into a single "canonical" NaN value.

A double entry has a width of 2, making its subsequent constant pool index valid and unusable.

See Java Virtual Machine Specification:

4.4.5 The CONSTANT_Long_info and CONSTANT_Double_info Structures

Since:

24

See Also:

• ConstantPoolBuilder::doubleEntry

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
double	doubleValue()	Returns the double value.

Methods declared in interface AnnotationConstantValueEntry

constantValue

Modifier and Type	Method	Description
ConstantDesc	constantValue()	Returns the constant value.

Methods declared in interface ConstantValueEntry

constantValue

Modifier and Type	Method	Description
ConstantDesc	constantValue()	Returns the constant value.

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

doubleValue

double doubleValue()

Returns the double value.

Returns:

the double value

See Also:

• ConstantPoolBuilder::doubleEntry(double)