Module java.base

Package java.lang.classfile^PREVIEW

Interface Signature.TypeArg

Enclosing interface:

SignaturePREVIEW

public static sealed interface Signature.TypeArg

TypeArg is a preview API of the Java platform.

Programs can only use TypeArg 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 type argument.

Since:

22

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static enum	Signature.TypeArg.WildcardIndicatorPREVIEW	Preview. Indicator for whether a wildcard has default bound, no bound, an upper bound, or a lower bound

Method Summary

Modifier and Type	Method	Description
Optional<Signature.RefTypeSigPREVIEW>	boundType()	Returns the signature of the type bound, if any.
static Signature.TypeArgPREVIEW	extendsOf(Signature.RefTypeSigPREVIEW boundType)	Returns an upper-bounded type arg.
static Signature.TypeArgPREVIEW	of(Signature.RefTypeSigPREVIEW boundType)	Returns a bounded type arg.
static Signature.TypeArgPREVIEW	of(Signature.TypeArg.WildcardIndicatorPREVIEW wildcard, Optional<Signature.RefTypeSigPREVIEW> boundType)	Returns a bounded type arg.
static Signature.TypeArgPREVIEW	superOf(Signature.RefTypeSigPREVIEW boundType)	Returns a lower-bounded type arg.
static Signature.TypeArgPREVIEW	unbounded()	Returns an unbounded type arg.
Signature.TypeArg.WildcardIndicatorPREVIEW	wildcardIndicator()	Returns the wildcard indicator.

Method Details

wildcardIndicator

Signature.TypeArg.WildcardIndicatorPREVIEW wildcardIndicator()

Returns the wildcard indicator.

Returns:

the wildcard indicator

boundType

Optional<Signature.RefTypeSigPREVIEW> boundType()

Returns the signature of the type bound, if any.

Returns:

the signature of the type bound, if any

of

static Signature.TypeArgPREVIEW of(Signature.RefTypeSigPREVIEW boundType)

Returns a bounded type arg.

Parameters:

boundType - the bound

Returns:

a bounded type arg

unbounded

static Signature.TypeArgPREVIEW unbounded()

Returns an unbounded type arg.

Returns:

an unbounded type arg

extendsOf

static Signature.TypeArgPREVIEW extendsOf(Signature.RefTypeSigPREVIEW boundType)

Returns an upper-bounded type arg.

Parameters:

boundType - the upper bound

Returns:

an upper-bounded type arg

superOf

static Signature.TypeArgPREVIEW superOf(Signature.RefTypeSigPREVIEW boundType)

Returns a lower-bounded type arg.

Parameters:

boundType - the lower bound

Returns:

a lower-bounded type arg

of

static Signature.TypeArgPREVIEW of(Signature.TypeArg.WildcardIndicatorPREVIEW wildcard,
 Optional<Signature.RefTypeSigPREVIEW> boundType)

Returns a bounded type arg.

Parameters:

wildcard - the wild card

boundType - optional bound type

Returns:

a bounded type arg