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Interface AccessFlags

All Superinterfaces:: ClassElement, ClassFileElement, FieldElement, MethodElement

public sealed interface AccessFlags extends ClassElement, MethodElement, FieldElement

Models the access flags for a class, method, or field. The access flags appears exactly once in each class, method, or field; a ClassBuilder and a FieldBuilder chooses an unspecified default value if access flags are not provided, and a MethodBuilder is always created with access flags.

AccessFlags cannot be created via a factory method directly; it can be created with withFlags methods on the respective builders.

A MethodBuilder throws an IllegalArgumentException if it is supplied an AccessFlags object that changes the preexisting ACC_STATIC flag of the builder, because the access flag change may invalidate previously supplied data to the builder.

API Note:

The access flags of classes, methods, and fields are modeled as a standalone object to support streaming as elements for ClassFileTransform. Other access flags are not elements of a CompoundElement and thus not modeled by AccessFlags; they provide their own flagsMask, flags, and has methods.

Since:

See Also:

Method Summary

Modifier and Type	Method	Description
`Set<AccessFlag>`	`flags()`	Returns the access flags, as a set of flag enums.
`int`	`flagsMask()`	Returns the access flags, as a bit mask.
`boolean`	`has(AccessFlag flag)`	Returns whether the specified flag is set.
`AccessFlag.Location`	`location()`	Returns the `class` file location for this element, which is either class, method, or field.

Method Details

flagsMask

int flagsMask()

Returns the access flags, as a bit mask. It is in the range of unsigned short, [0, 0xFFFF].

Returns:: the access flags, as a bit mask

flags

Set<AccessFlag> flags()

Returns the access flags, as a set of flag enums.

Returns:

the access flags, as a set of flag enums

Throws:

IllegalArgumentException - if the flags mask has any undefined bit set

See Also:

has

boolean has(AccessFlag flag)

Returns whether the specified flag is set. If the specified flag is not available to this location, returns false.

Parameters:

flag - the flag to test

Returns:

whether the specified flag is set

See Also:

location

AccessFlag.Location location()

Returns the class file location for this element, which is either class, method, or field.

Returns:

the class file location for this element, which is either class, method, or field

See Also:

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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/AccessFlags.html