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Interface PermittedSubclassesAttribute

All Superinterfaces:
Attribute<PermittedSubclassesAttribute>, ClassElement, ClassFileElement
public sealed interface PermittedSubclassesAttribute extends Attribute<PermittedSubclassesAttribute>, ClassElement
Models the PermittedSubclasses attribute (JVMS 4.7.31), which indicates this class or interface is sealed, and which classes or interfaces may extend or implement this class or interface.

This attribute only appears on classes, and does not permit multiple instances in a class. It has a data dependency on the constant pool.

The attribute was introduced in the Java SE Platform version 17, major version 61.

See Java Language Specification:
8.1.1.2 sealed, non-sealed, and final Classes
9.1.1.4 sealed and non-sealed Interfaces
See Java Virtual Machine Specification:
4.7.31 The PermittedSubclasses Attribute
Since:
24
See Also:

Method Summary

Modifier and Type Method Description
static PermittedSubclassesAttribute of(ClassEntry... permittedSubclasses)
Returns a PermittedSubclasses attribute.
static PermittedSubclassesAttribute of(List<ClassEntry> permittedSubclasses)
Returns a PermittedSubclasses attribute.
static PermittedSubclassesAttribute ofSymbols(ClassDesc... permittedSubclasses)
Returns a PermittedSubclasses attribute.
static PermittedSubclassesAttribute ofSymbols(List<ClassDesc> permittedSubclasses)
Returns a PermittedSubclasses attribute.
List<ClassEntry> permittedSubclasses()
Returns the list of permitted subclasses or subinterfaces.

Methods declared in interface Attribute

attributeMapper, attributeName

Method Details

permittedSubclasses

List<ClassEntry> permittedSubclasses()
Returns the list of permitted subclasses or subinterfaces.
Returns:
the list of permitted subclasses or subinterfaces
See Also:

of

static PermittedSubclassesAttribute of(List<ClassEntry> permittedSubclasses)
Returns a PermittedSubclasses attribute.
Parameters:
permittedSubclasses - the permitted subclasses or subinterfaces
Returns:
a PermittedSubclasses attribute

of

static PermittedSubclassesAttribute of(ClassEntry... permittedSubclasses)
Returns a PermittedSubclasses attribute.
Parameters:
permittedSubclasses - the permitted subclasses or subinterfaces
Returns:
a PermittedSubclasses attribute

ofSymbols

static PermittedSubclassesAttribute ofSymbols(List<ClassDesc> permittedSubclasses)
Returns a PermittedSubclasses attribute.
Parameters:
permittedSubclasses - the permitted subclasses or subinterfaces
Returns:
a PermittedSubclasses attribute
Throws:
IllegalArgumentException - if any of permittedSubclasses is primitive

ofSymbols

static PermittedSubclassesAttribute ofSymbols(ClassDesc... permittedSubclasses)
Returns a PermittedSubclasses attribute.
Parameters:
permittedSubclasses - the permitted subclasses or subinterfaces
Returns:
a PermittedSubclasses attribute
Throws:
IllegalArgumentException - if any of permittedSubclasses is primitive

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/lang/classfile/attribute/PermittedSubclassesAttribute.html