Module java.base

Package java.lang.classfile.attribute^PREVIEW

Interface ModuleTargetAttribute

All Superinterfaces:

AttributePREVIEW<ModuleTargetAttributePREVIEW>, ClassElementPREVIEW, ClassFileElementPREVIEW, WritableElementPREVIEW<ModuleTargetAttributePREVIEW>

public sealed interface ModuleTargetAttribute
extends AttributePREVIEW<ModuleTargetAttributePREVIEW>, ClassElementPREVIEW

ModuleTargetAttribute is a preview API of the Java platform.

Programs can only use ModuleTargetAttribute when preview features are enabled.

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

Models the ModuleTarget attribute, which can appear on classes that represent module descriptors. This is a JDK-specific attribute, which captures constraints on the target platform. Delivered as a ClassElement^PREVIEW when traversing the elements of a ClassModel^PREVIEW.

The specification of the ModuleTarget attribute is:

 
 TargetPlatform_attribute {
   // index to CONSTANT_utf8_info structure in constant pool representing
   // the string "ModuleTarget"
   u2 attribute_name_index;
   u4 attribute_length;

   // index to CONSTANT_utf8_info structure with the target platform
   u2 target_platform_index;
 }
  

The attribute does not permit multiple instances in a given location. Subsequent occurrence of the attribute takes precedence during the attributed element build or transformation.

Since:

22

Method Summary

Modifier and Type	Method	Description
static ModuleTargetAttributePREVIEW	of(Utf8EntryPREVIEW targetPlatform)	Returns a ModuleTarget attribute.
static ModuleTargetAttributePREVIEW	of(String targetPlatform)	Returns a ModuleTarget attribute.
Utf8EntryPREVIEW	targetPlatform()	Returns the target platform.

Methods declared in interface java.lang.classfile.Attribute^PREVIEW

attributeMapper, attributeName

Methods declared in interface java.lang.classfile.WritableElement^PREVIEW

writeTo

Method Details

targetPlatform

Utf8EntryPREVIEW targetPlatform()

Returns the target platform.

Returns:

the target platform

of

static ModuleTargetAttributePREVIEW of(String targetPlatform)

Returns a ModuleTarget attribute.

Parameters:

targetPlatform - the target platform

Returns:

a ModuleTarget attribute

of

static ModuleTargetAttributePREVIEW of(Utf8EntryPREVIEW targetPlatform)

Returns a ModuleTarget attribute.

Parameters:

targetPlatform - the target platform

Returns:

a ModuleTarget attribute