Module java.base

Package java.lang.classfile.attribute^PREVIEW

Interface ModuleMainClassAttribute

All Superinterfaces:

AttributePREVIEW<ModuleMainClassAttributePREVIEW>, ClassElementPREVIEW, ClassFileElementPREVIEW, WritableElementPREVIEW<ModuleMainClassAttributePREVIEW>

public sealed interface ModuleMainClassAttribute
extends AttributePREVIEW<ModuleMainClassAttributePREVIEW>, ClassElementPREVIEW

ModuleMainClassAttribute is a preview API of the Java platform.

Programs can only use ModuleMainClassAttribute 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 ModuleMainClass attribute 4.7.27, which can appear on classes that represent module descriptors. Delivered as a ClassElement^PREVIEW when traversing the elements of a ClassModel^PREVIEW.

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.

The attribute was introduced in the Java SE Platform version 9.

Since:

22

Method Summary

Modifier and Type	Method	Description
ClassEntryPREVIEW	mainClass()	Returns main class for this module.
static ModuleMainClassAttributePREVIEW	of(ClassEntryPREVIEW mainClass)	Returns a ModuleMainClass attribute.
static ModuleMainClassAttributePREVIEW	of(ClassDesc mainClass)	Returns a ModuleMainClass attribute.

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

attributeMapper, attributeName

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

writeTo

Method Details

mainClass

ClassEntryPREVIEW mainClass()

Returns main class for this module.

Returns:

main class for this module

of

static ModuleMainClassAttributePREVIEW of(ClassEntryPREVIEW mainClass)

Returns a ModuleMainClass attribute.

Parameters:

mainClass - the main class

Returns:

a ModuleMainClass attribute

of

static ModuleMainClassAttributePREVIEW of(ClassDesc mainClass)

Returns a ModuleMainClass attribute.

Parameters:

mainClass - the main class

Returns:

a ModuleMainClass attribute

Throws:

IllegalArgumentException - if mainClass represents a primitive type