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

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.

Method Summary

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

Method Detail

flags back to summary

flags	back to summary
public Set<AccessFlag> flags() Returns the access flags, as a set of flag enums. Returns:Set<AccessFlag> the access flags, as a set of flag enums Exceptions IllegalArgumentException: if the flags mask has any undefined bit set See Also `location()`

public Set<AccessFlag> flags()

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

Returns:Set<AccessFlag>

the access flags, as a set of flag enums

Exceptions

IllegalArgumentException:: if the flags mask has any undefined bit set

See Also

location()

flagsMask back to summary

flagsMask	back to summary
public int flagsMask() Returns the access flags, as a bit mask. It is a `u2` value. Returns:int the access flags, as a bit mask

public int flagsMask()

Returns the access flags, as a bit mask. It is a u2 value.

Returns:int: the access flags, as a bit mask

has back to summary

has	back to summary
public 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:AccessFlag the flag to test Returns:boolean whether the specified flag is set See Also `location()`

public 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:AccessFlag: the flag to test

Returns:boolean

whether the specified flag is set

See Also

location()

location back to summary

location	back to summary
public AccessFlag.Location location() Returns the `class` file location for this element, which is either class, method, or field. Returns:AccessFlag.Location the `class` file location for this element, which is either class, method, or field See Also `AccessFlag.Location#CLASS`, `AccessFlag.Location#FIELD`, `AccessFlag.Location#METHOD`

public AccessFlag.Location location()

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

Returns:AccessFlag.Location: the class file location for this element, which is either class, method, or field
See Also: AccessFlag.Location#CLASS, AccessFlag.Location#FIELD, AccessFlag.Location#METHOD

public sealed Interface AccessFlags

Method Summary

Method Detail