Module java.base

Package java.lang.classfile^PREVIEW

Enum Class AttributeMapper.AttributeStability

java.lang.Object

java.lang.Enum<AttributeMapper.AttributeStability^PREVIEW>

java.lang.classfile.AttributeMapper.AttributeStability

All Implemented Interfaces:

Serializable, Comparable<AttributeMapper.AttributeStabilityPREVIEW>, Constable

Enclosing interface:

AttributeMapperPREVIEW<A>

public static enum AttributeMapper.AttributeStability
extends Enum<AttributeMapper.AttributeStabilityPREVIEW>

AttributeStability is a preview API of the Java platform.

Programs can only use AttributeStability when preview features are enabled.

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

Attribute stability indicator

Since:

22

Nested Class Summary

Nested classes/interfaces declared in class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
CP_REFS	The attribute contains only pure data and CP refs, so can be bulk-copied when CP sharing is in effect, and need to be exploded and rewritten when CP sharing is not in effect.
LABELS	The attribute may contain labels, so need to be exploded and rewritten when the Code array is perturbed.
STATELESS	The attribute contains only pure data, such as timestamps, and can always be bulk-copied.
UNKNOWN	The attribute is completely unknown and so we consult the ClassFile.AttributesProcessingOptionPREVIEW option to determine whether to preserve or drop it during transformation.
UNSTABLE	The attribute may contain indexes into structured not managed by the library (type variable lists, etc) and so we consult the ClassFile.AttributesProcessingOptionPREVIEW option to determine whether to preserve or drop it during transformation.

Method Summary

Modifier and Type	Method	Description
static AttributeMapper.AttributeStabilityPREVIEW	valueOf(String name)	Returns the enum constant of this class with the specified name.
static AttributeMapper.AttributeStabilityPREVIEW[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods declared in class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods declared in class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

STATELESS

public static final AttributeMapper.AttributeStabilityPREVIEW STATELESS

The attribute contains only pure data, such as timestamps, and can always be bulk-copied.

CP_REFS

public static final AttributeMapper.AttributeStabilityPREVIEW CP_REFS

The attribute contains only pure data and CP refs, so can be bulk-copied when CP sharing is in effect, and need to be exploded and rewritten when CP sharing is not in effect.

LABELS

public static final AttributeMapper.AttributeStabilityPREVIEW LABELS

The attribute may contain labels, so need to be exploded and rewritten when the Code array is perturbed.

UNSTABLE

public static final AttributeMapper.AttributeStabilityPREVIEW UNSTABLE

The attribute may contain indexes into structured not managed by the library (type variable lists, etc) and so we consult the ClassFile.AttributesProcessingOption^PREVIEW option to determine whether to preserve or drop it during transformation.

UNKNOWN

public static final AttributeMapper.AttributeStabilityPREVIEW UNKNOWN

The attribute is completely unknown and so we consult the ClassFile.AttributesProcessingOption^PREVIEW option to determine whether to preserve or drop it during transformation.

Method Details

values

public static AttributeMapper.AttributeStabilityPREVIEW[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static AttributeMapper.AttributeStabilityPREVIEW valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null