OpenJDK 27 · java.lang.classfile.AttributedElement · APIdia, the JavaDoc alternative

A ClassFileElement describing a class file structure that has attributes, such as a class file, a field, a method, a Code attribute, or a record component.

Unless otherwise specified, most attributes that can be discovered in a CompoundElement implements the corresponding membership subinterface of ClassFileElement, and can be sent to a ClassFileBuilder to be integrated into the built structure.

Method Summary

Modifier and Type	Method and Description
public List<Attribute<?>>	Returns: the attributes of this structure attributes() Returns the attributes of this structure.
public default < the type of the attribute T extends Attribute<T>> Optional<T>	Returns: the attribute, or `Optional.empty()` if the attribute is not present findAttribute(AttributeMapper<T> the attribute mapper attr) Finds an attribute by name.
public default < the type of the attribute T extends Attribute<T>> List<T>	Returns: the attributes, or an empty `List` if the attribute is not present findAttributes(AttributeMapper<T> the attribute mapper attr) Finds attributes by name.

Method Detail

attributes	back to summary
public List<Attribute<?>> attributes() Returns the attributes of this structure. Returns:List<Attribute<?>> the attributes of this structure

attributes

back to summary

public List<Attribute<?>> attributes()

Returns the attributes of this structure.

Returns:List<Attribute<?>>: the attributes of this structure

findAttribute back to summary

findAttribute	back to summary
public default <T extends Attribute<T>> Optional<T> findAttribute(AttributeMapper<T> attr) Finds an attribute by name. This is suitable to find attributes that allow at most one instance in one structure. If this is used to find attributes that allow multiple instances in one structure, the first matching instance is returned. API Note This can easily find an attribute and send it to another `ClassFileBuilder`, which is a `Consumer`: `MethodModel method = null; MethodBuilder mb = null; method.findAttribute(Attributes.code()).ifPresent(mb);` MethodModel method = ... MethodBuilder mb = ... method.findAttribute(Attributes.code()).ifPresent(mb); Parameters <T> the type of the attribute attr:AttributeMapper<T> the attribute mapper Returns:Optional<T> the attribute, or `Optional.empty()` if the attribute is not present

public default <T extends Attribute<T>> Optional<T> findAttribute(AttributeMapper<T> attr)

Finds an attribute by name. This is suitable to find attributes that allow at most one instance in one structure. If this is used to find attributes that allow multiple instances in one structure, the first matching instance is returned.

API Note

This can easily find an attribute and send it to another ClassFileBuilder, which is a Consumer:

MethodModel method = ...
MethodBuilder mb = ...
method.findAttribute(Attributes.code()).ifPresent(mb);

Parameters

<T>: the type of the attribute
attr:AttributeMapper<T>: the attribute mapper

Returns:Optional<T>

the attribute, or Optional.empty() if the attribute is not present

findAttributes back to summary

findAttributes	back to summary
public default <T extends Attribute<T>> List<T> findAttributes(AttributeMapper<T> attr) Finds attributes by name. This is suitable to find attributes that allow multiple instances in one structure. Parameters <T> the type of the attribute attr:AttributeMapper<T> the attribute mapper Returns:List<T> the attributes, or an empty `List` if the attribute is not present

public default <T extends Attribute<T>> List<T> findAttributes(AttributeMapper<T> attr)

Finds attributes by name. This is suitable to find attributes that allow multiple instances in one structure.

Parameters

<T>: the type of the attribute
attr:AttributeMapper<T>: the attribute mapper

Returns:List<T>

the attributes, or an empty List if the attribute is not present

public sealed Interface AttributedElement

Method Summary

Method Detail