Modifier and Type	Class and Description
public static interface	Signature.ArrayTypeSig Models the signature of an array type.
public static interface	Signature.BaseTypeSig Models the signature of a primitive type (JLS 4.2) or void.
public static interface	Signature.ClassTypeSig Models the signature of a possibly-parameterized class or interface type.
public static interface	Signature.RefTypeSig Models the signature of a reference type, which may be a class, interface, type variable, or array type.
public static interface	Signature.ThrowableSig Marker interface for a signature for a throwable type.
public static interface	Signature.TypeArg Models a type argument, an argument to a type parameter.
public static interface	Signature.TypeParam Models a signature for a type parameter of a generic class, interface, method, or constructor, which introduces a type variable.
public static interface	Signature.TypeVarSig Models the signature of a type variable.

Modifier and Type	Method and Description
public static Signature	Returns: a Java type signature from a field descriptor of(ClassDesc the symbolic description of the Java type classDesc) Returns a Java type signature from a field descriptor.
public static Signature	Returns: a Java type signature parseFrom(String raw Java type signature string javaTypeSignature) Parses a Java type signature from a raw string.
public String	Returns: the raw signature string signatureString() Returns the raw signature string.

of	back to summary
public static Signature of(ClassDesc classDesc) Returns a Java type signature from a field descriptor. The returned signature represents a reifiable type (JLS 4.7). Parameters classDesc:ClassDesc the symbolic description of the Java type Returns:Signature a Java type signature from a field descriptor Exceptions IllegalArgumentException: if the field descriptor cannot be denoted

parseFrom	back to summary
public static Signature parseFrom(String javaTypeSignature) Parses a Java type signature from a raw string. Parameters javaTypeSignature:String raw Java type signature string Returns:Signature a Java type signature Exceptions IllegalArgumentException: if the string is not a valid Java type signature string

signatureString	back to summary
public String signatureString() Returns the raw signature string. Returns:String the raw signature string

public sealed Interface Signature.ArrayTypeSig

Known Direct Implementers: jdk.internal.classfile.impl.SignaturesImpl.ArrayTypeSigImpl

Models the signature of an array type.

Since: 24
Java Language Specification: 10.1 Array Types
Java Virtual Machine Specification: 4.7.9.1 Signatures
See Also: Type, GenericArrayType

Method Summary

Modifier and Type	Method and Description
public Signature	Returns: the signature of the component type componentSignature() Returns the signature of the component type.
public static Signature.ArrayTypeSig	Returns: an array type with the given component type of(Signature the component type componentSignature) Returns an array type with the given component type.
public static Signature.ArrayTypeSig	Returns: a signature for an array type of(int the dimension of the array dims, Signature the component type componentSignature) Returns a signature for an array type.

Method Detail

componentSignature	back to summary
public Signature componentSignature() Returns the signature of the component type. Returns:Signature the signature of the component type

componentSignature

back to summary

public Signature componentSignature()

Returns the signature of the component type.

Returns:Signature: the signature of the component type

of	back to summary
public static Signature.ArrayTypeSig of(Signature componentSignature) Returns an array type with the given component type. Parameters componentSignature:Signature the component type Returns:Signature.ArrayTypeSig an array type with the given component type Exceptions IllegalArgumentException: if the component type is void

back to summary

public static Signature.ArrayTypeSig of(Signature componentSignature)

Returns an array type with the given component type.

Parameters

componentSignature:Signature: the component type

Returns:Signature.ArrayTypeSig

an array type with the given component type

Exceptions

IllegalArgumentException:: if the component type is void

of back to summary

of	back to summary
public static Signature.ArrayTypeSig of(int dims, Signature componentSignature) Returns a signature for an array type. Parameters dims:int the dimension of the array componentSignature:Signature the component type Returns:Signature.ArrayTypeSig a signature for an array type Exceptions IllegalArgumentException: if `dims < 1` or the resulting array type exceeds 255 dimensions or the component type is void

public static Signature.ArrayTypeSig of(int dims, Signature componentSignature)

Returns a signature for an array type.

Parameters

dims:int: the dimension of the array
componentSignature:Signature: the component type

Returns:Signature.ArrayTypeSig

a signature for an array type

Exceptions

IllegalArgumentException:: if dims < 1 or the resulting array type exceeds 255 dimensions or the component type is void

java.lang.classfile back to summary

public sealed Interface Signature.BaseTypeSig

Known Direct Implementers: jdk.internal.classfile.impl.SignaturesImpl.BaseTypeSigImpl

Models the signature of a primitive type (JLS 4.2) or void.

Since: 24
Java Language Specification: 4.2 Primitive Types and Values
Java Virtual Machine Specification: 4.7.9.1 Signatures

Method Summary

Modifier and Type	Method and Description
public char	Returns: the single-letter descriptor for the base type baseType() Returns the single-letter descriptor for the base type.
public static Signature.BaseTypeSig	Returns: the signature of a primitive type or void of(ClassDesc a symbolic descriptor for the base type, must correspond to a primitive type classDesc) Hides java.lang.classfile.Signature.of. Returns the signature of a primitive type or void.
public static Signature.BaseTypeSig	Returns: the signature of a primitive type or void of(char the single-letter descriptor for the base type baseType) Returns the signature of a primitive type or void.

Inherited from java.lang.classfile.Signature:: parseFrom signatureString

Method Detail

baseType	back to summary
public char baseType() Returns the single-letter descriptor for the base type. Returns:char the single-letter descriptor for the base type

baseType

back to summary

public char baseType()

Returns the single-letter descriptor for the base type.

Returns:char: the single-letter descriptor for the base type

of back to summary

of	back to summary
public static Signature.BaseTypeSig of(ClassDesc classDesc) Hides java.lang.classfile.Signature.of. Returns the signature of a primitive type or void. Parameters classDesc:ClassDesc a symbolic descriptor for the base type, must correspond to a primitive type Returns:Signature.BaseTypeSig the signature of a primitive type or void Exceptions IllegalArgumentException: if the `classDesc` is not primitive

public static Signature.BaseTypeSig of(ClassDesc classDesc)

Hides java.lang.classfile.Signature.of.

Returns the signature of a primitive type or void.

Parameters

classDesc:ClassDesc: a symbolic descriptor for the base type, must correspond to a primitive type

Returns:Signature.BaseTypeSig

the signature of a primitive type or void

Exceptions

IllegalArgumentException:: if the classDesc is not primitive

of back to summary

of	back to summary
public static Signature.BaseTypeSig of(char baseType) Returns the signature of a primitive type or void. Parameters baseType:char the single-letter descriptor for the base type Returns:Signature.BaseTypeSig the signature of a primitive type or void Exceptions IllegalArgumentException: if the `baseType` is not a valid descriptor character for a primitive type or void

public static Signature.BaseTypeSig of(char baseType)

Returns the signature of a primitive type or void.

Parameters

baseType:char: the single-letter descriptor for the base type

Returns:Signature.BaseTypeSig

the signature of a primitive type or void

Exceptions

IllegalArgumentException:: if the baseType is not a valid descriptor character for a primitive type or void

java.lang.classfile back to summary

public sealed Interface Signature.ClassTypeSig

Known Direct Implementers: jdk.internal.classfile.impl.SignaturesImpl.ClassTypeSigImpl

Models the signature of a possibly-parameterized class or interface type.

These are examples of class type signatures:

Lcom/example/Outer; for Outer
Has class name com/example/Outer and no outer type or type argument.
Lcom/example/Outer$Nested<TA;>; for Outer.Nested<A>
Has class name com/example/Outer$Nested representing a nested class, no outer type, and a single type argument of type variable A.
Lcom/example/GenericOuter<TA;>.Inner; for GenericOuter<A>.Inner
Has class name Inner, a simple class name, outer type Lcom/example/GenericOuter<TA;>; for GenericOuter<A>, and no type argument.

If the outer type exists, the class name is the simple name of the nested type. Otherwise, it is a binary name in internal form (separated by /).

If a nested type does not have any enclosing parameterization, it may be represented without an outer type and as an internal binary name, in which nesting is represented by $ instead of ..

Since: 24
Java Virtual Machine Specification: 4.7.9.1 Signatures
See Also: Type, ParameterizedType

Method Summary

Modifier and Type	Method and Description
public default ClassDesc	Returns: this class or interface, as a symbolic descriptor classDesc() Returns this class or interface, as a symbolic descriptor.
public String	Returns: the class or interface name; includes the slash-separated package name if there is no outer type className() Returns the class or interface name; includes the slash-separated package name if there is no outer type.
public static Signature.ClassTypeSig	Returns: a class or interface signature without an outer type of(ClassDesc the name of the class or interface className, Signature.TypeArg... the type arguments typeArgs) Returns a class or interface signature without an outer type.
public static Signature.ClassTypeSig	Returns: a class or interface signature of(Signature.ClassTypeSig signature of the outer type, may be `null` outerType, ClassDesc the name of this class or interface className, Signature.TypeArg... the type arguments typeArgs) Deprecated for removal since 26. The resulting signature does not denote the class represented by `className` when `outerType` is not null. Returns a class or interface signature.
public static Signature.ClassTypeSig	Returns: a class or interface signature without an outer type of(String the name of the class or interface, may use `/` to separate className, Signature.TypeArg... the type arguments typeArgs) Returns a class or interface signature without an outer type.
public static Signature.ClassTypeSig	Returns: a class type signature of(Signature.ClassTypeSig signature of the outer type, may be `null` outerType, String the name of this class or interface, may use `/` to separate if outer type is absent className, Signature.TypeArg... the type arguments typeArgs) Returns a class type signature.
public Optional<Signature.ClassTypeSig>	Returns: the signature of the class that this class is a member of, only if this is a member class outerType() Returns the signature of the class that this class is a member of, only if this is a member class.
public List<Signature.TypeArg>	Returns: the type arguments of this class or interface typeArgs() Returns the type arguments of this class or interface.

Method Detail

classDesc	back to summary
public default ClassDesc classDesc() Returns this class or interface, as a symbolic descriptor. Returns:ClassDesc this class or interface, as a symbolic descriptor

classDesc

back to summary

public default ClassDesc classDesc()

Returns this class or interface, as a symbolic descriptor.

Returns:ClassDesc: this class or interface, as a symbolic descriptor

className back to summary

className	back to summary
public String className() Returns the class or interface name; includes the slash-separated package name if there is no outer type. Note this may indicate a nested class name with `$` separators if there is no parameterized enclosing type. Returns:String the class or interface name; includes the slash-separated package name if there is no outer type

public String className()

Returns the class or interface name; includes the slash-separated package name if there is no outer type. Note this may indicate a nested class name with $ separators if there is no parameterized enclosing type.

Returns:String: the class or interface name; includes the slash-separated package name if there is no outer type

of back to summary

of	back to summary
public static Signature.ClassTypeSig of(ClassDesc className, Signature.TypeArg... typeArgs) Returns a class or interface signature without an outer type. Parameters className:ClassDesc the name of the class or interface typeArgs:Signature.TypeArg[] the type arguments Returns:Signature.ClassTypeSig a class or interface signature without an outer type Exceptions IllegalArgumentException: if `className` does not represent a class or interface, or if it cannot be denoted

public static Signature.ClassTypeSig of(ClassDesc className, Signature.TypeArg... typeArgs)

Returns a class or interface signature without an outer type.

Parameters

className:ClassDesc: the name of the class or interface
typeArgs:Signature.TypeArg[]: the type arguments

Returns:Signature.ClassTypeSig

a class or interface signature without an outer type

Exceptions

IllegalArgumentException:: if className does not represent a class or interface, or if it cannot be denoted

of back to summary

of	back to summary
public static Signature.ClassTypeSig of(Signature.ClassTypeSig outerType, ClassDesc className, Signature.TypeArg... typeArgs) Deprecated for removal since 26. The resulting signature does not denote the class represented by `className` when `outerType` is not null. Use `of(ClassTypeSig, String, TypeArg...)` instead. Returns a class or interface signature. Parameters outerType:Signature.ClassTypeSig signature of the outer type, may be `null` className:ClassDesc the name of this class or interface typeArgs:Signature.TypeArg[] the type arguments Returns:Signature.ClassTypeSig a class or interface signature Annotations @Deprecated since:26 forRemoval:true Exceptions IllegalArgumentException: if `className` does not represent a class or interface, or if it cannot be denoted

public static Signature.ClassTypeSig of(Signature.ClassTypeSig outerType, ClassDesc className, Signature.TypeArg... typeArgs)

Deprecated

for removal since 26.

The resulting signature does not denote the class represented by className when outerType is not null. Use of(ClassTypeSig, String, TypeArg...) instead.

Returns a class or interface signature.

Parameters

outerType:Signature.ClassTypeSig: signature of the outer type, may be null
className:ClassDesc: the name of this class or interface
typeArgs:Signature.TypeArg[]: the type arguments

Returns:Signature.ClassTypeSig

a class or interface signature

Annotations

@Deprecated
since:26
forRemoval:true

Exceptions

IllegalArgumentException:: if className does not represent a class or interface, or if it cannot be denoted

of back to summary

of	back to summary
public static Signature.ClassTypeSig of(String className, Signature.TypeArg... typeArgs) Returns a class or interface signature without an outer type. Parameters className:String the name of the class or interface, may use `/` to separate typeArgs:Signature.TypeArg[] the type arguments Returns:Signature.ClassTypeSig a class or interface signature without an outer type Exceptions IllegalArgumentException: if `className` cannot be denoted

public static Signature.ClassTypeSig of(String className, Signature.TypeArg... typeArgs)

Returns a class or interface signature without an outer type.

Parameters

className:String: the name of the class or interface, may use / to separate
typeArgs:Signature.TypeArg[]: the type arguments

Returns:Signature.ClassTypeSig

a class or interface signature without an outer type

Exceptions

IllegalArgumentException:: if className cannot be denoted

of back to summary

of	back to summary
public static Signature.ClassTypeSig of(Signature.ClassTypeSig outerType, String className, Signature.TypeArg... typeArgs) Returns a class type signature. Parameters outerType:Signature.ClassTypeSig signature of the outer type, may be `null` className:String the name of this class or interface, may use `/` to separate if outer type is absent typeArgs:Signature.TypeArg[] the type arguments Returns:Signature.ClassTypeSig a class type signature Exceptions IllegalArgumentException: if `className` cannot be denoted

public static Signature.ClassTypeSig of(Signature.ClassTypeSig outerType, String className, Signature.TypeArg... typeArgs)

Returns a class type signature.

Parameters

outerType:Signature.ClassTypeSig: signature of the outer type, may be null
className:String: the name of this class or interface, may use / to separate if outer type is absent
typeArgs:Signature.TypeArg[]: the type arguments

Returns:Signature.ClassTypeSig

a class type signature

Exceptions

IllegalArgumentException:: if className cannot be denoted

outerType	back to summary
public Optional<Signature.ClassTypeSig> outerType() Returns the signature of the class that this class is a member of, only if this is a member class. Note that the outer class may be absent if this is a member class without any parameterized enclosing type. Returns:Optional<Signature.ClassTypeSig> the signature of the class that this class is a member of, only if this is a member class Java Language Specification 4.5 Parameterized Types

outerType

back to summary

public Optional<Signature.ClassTypeSig> outerType()

Returns the signature of the class that this class is a member of, only if this is a member class. Note that the outer class may be absent if this is a member class without any parameterized enclosing type.

Returns:Optional<Signature.ClassTypeSig>: the signature of the class that this class is a member of, only if this is a member class
Java Language Specification: 4.5 Parameterized Types

typeArgs	back to summary
public List<Signature.TypeArg> typeArgs() Returns the type arguments of this class or interface. Note that the outer type may have more type arguments. Returns:List<Signature.TypeArg> the type arguments of this class or interface Java Language Specification 4.5 Parameterized Types

typeArgs

back to summary

public List<Signature.TypeArg> typeArgs()

Returns the type arguments of this class or interface. Note that the outer type may have more type arguments.

Returns:List<Signature.TypeArg>: the type arguments of this class or interface
Java Language Specification: 4.5 Parameterized Types

java.lang.classfile back to summary

public sealed Interface Signature.RefTypeSig

Known Direct Subinterfaces: java.lang.classfile.Signature.ClassTypeSig, java.lang.classfile.Signature.TypeVarSig, java.lang.classfile.Signature.ArrayTypeSig

Models the signature of a reference type, which may be a class, interface, type variable, or array type.

Since: 24
Java Language Specification: 4.3 Reference Types and Values
Java Virtual Machine Specification: 4.7.9.1 Signatures

Method Summary

Inherited from java.lang.classfile.Signature:: of parseFrom signatureString

java.lang.classfile back to summary

public sealed Interface Signature.ThrowableSig

Known Direct Subinterfaces: java.lang.classfile.Signature.ClassTypeSig, java.lang.classfile.Signature.TypeVarSig

Marker interface for a signature for a throwable type.

Since: 24
Java Language Specification: 8.4.6 Method Throws
Java Virtual Machine Specification: 4.7.9.1 Signatures

Method Summary

Inherited from java.lang.classfile.Signature:: of parseFrom signatureString

java.lang.classfile back to summary

public sealed Interface Signature.TypeArg

Known Direct Subinterfaces: java.lang.classfile.Signature.TypeArg.Unbounded, java.lang.classfile.Signature.TypeArg.Bounded

Models a type argument, an argument to a type parameter.

Since: 24
Java Language Specification: 4.5.1 Type Arguments of Parameterized Types
Java Virtual Machine Specification: 4.7.9.1 Signatures
See Also: Type, WildcardType

Nested and Inner Type Summary

Modifier and Type	Class and Description
public static interface	Signature.TypeArg.Bounded Models a type argument with an explicit bound type.
public static interface	Signature.TypeArg.Unbounded Models an unbounded wildcard type argument `*`, or `?`

Method Summary

Modifier and Type	Method and Description
public static Signature.TypeArg.Bounded	Returns: a bounded type argument bounded(Signature.TypeArg.Bounded.WildcardIndicator the wildcard indicator wildcard, Signature.RefTypeSig the bound type boundType) Returns a bounded type argument.
public static Signature.TypeArg.Bounded	Returns: an upper-bounded wildcard type argument extendsOf(Signature.RefTypeSig the upper bound boundType) Returns an upper-bounded wildcard type argument.
public static Signature.TypeArg.Bounded	Returns: a type argument of a reference type of(Signature.RefTypeSig the reference type boundType) Returns a type argument of a reference type.
public static Signature.TypeArg.Bounded	Returns: a lower-bounded wildcard type argument superOf(Signature.RefTypeSig the lower bound boundType) Returns a lower-bounded wildcard type argument.
public static Signature.TypeArg.Unbounded	Returns: an unbounded wildcard type argument `` unbounded() Returns an unbounded wildcard type argument ``.

Method Detail

bounded	back to summary
public static Signature.TypeArg.Bounded bounded(Signature.TypeArg.Bounded.WildcardIndicator wildcard, Signature.RefTypeSig boundType) Returns a bounded type argument. Parameters wildcard:Signature.TypeArg.Bounded.WildcardIndicator the wildcard indicator boundType:Signature.RefTypeSig the bound type Returns:Signature.TypeArg.Bounded a bounded type argument

bounded

back to summary

public static Signature.TypeArg.Bounded bounded(Signature.TypeArg.Bounded.WildcardIndicator wildcard, Signature.RefTypeSig boundType)

Returns a bounded type argument.

Parameters

wildcard:Signature.TypeArg.Bounded.WildcardIndicator: the wildcard indicator
boundType:Signature.RefTypeSig: the bound type

Returns:Signature.TypeArg.Bounded

a bounded type argument

extendsOf back to summary

extendsOf	back to summary
public static Signature.TypeArg.Bounded extendsOf(Signature.RefTypeSig boundType) Returns an upper-bounded wildcard type argument. Parameters boundType:Signature.RefTypeSig the upper bound Returns:Signature.TypeArg.Bounded an upper-bounded wildcard type argument See Also `Bounded.WildcardIndicator#EXTENDS`

public static Signature.TypeArg.Bounded extendsOf(Signature.RefTypeSig boundType)

Returns an upper-bounded wildcard type argument.

Parameters

boundType:Signature.RefTypeSig: the upper bound

Returns:Signature.TypeArg.Bounded

an upper-bounded wildcard type argument

See Also

Bounded.WildcardIndicator#EXTENDS

of back to summary

of	back to summary
public static Signature.TypeArg.Bounded of(Signature.RefTypeSig boundType) Returns a type argument of a reference type. Parameters boundType:Signature.RefTypeSig the reference type Returns:Signature.TypeArg.Bounded a type argument of a reference type See Also `Bounded.WildcardIndicator#NONE`

public static Signature.TypeArg.Bounded of(Signature.RefTypeSig boundType)

Returns a type argument of a reference type.

Parameters

boundType:Signature.RefTypeSig: the reference type

Returns:Signature.TypeArg.Bounded

a type argument of a reference type

See Also

Bounded.WildcardIndicator#NONE

superOf back to summary

superOf	back to summary
public static Signature.TypeArg.Bounded superOf(Signature.RefTypeSig boundType) Returns a lower-bounded wildcard type argument. Parameters boundType:Signature.RefTypeSig the lower bound Returns:Signature.TypeArg.Bounded a lower-bounded wildcard type argument See Also `Bounded.WildcardIndicator#SUPER`

public static Signature.TypeArg.Bounded superOf(Signature.RefTypeSig boundType)

Returns a lower-bounded wildcard type argument.

Parameters

boundType:Signature.RefTypeSig: the lower bound

Returns:Signature.TypeArg.Bounded

a lower-bounded wildcard type argument

See Also

Bounded.WildcardIndicator#SUPER

unbounded back to summary

unbounded	back to summary
public static Signature.TypeArg.Unbounded unbounded() Returns an unbounded wildcard type argument ``. Returns:Signature.TypeArg.Unbounded an unbounded wildcard type argument ``

public static Signature.TypeArg.Unbounded unbounded()

Returns an unbounded wildcard type argument *.

Returns:Signature.TypeArg.Unbounded: an unbounded wildcard type argument *

java.lang.classfile back to summary

public sealed Interface Signature.TypeArg.Bounded

Known Direct Implementers: jdk.internal.classfile.impl.SignaturesImpl.TypeArgImpl

Models a type argument with an explicit bound type.

Since: 24
Java Language Specification: 4.5.1 Type Arguments of Parameterized Types
Java Virtual Machine Specification: 4.7.9.1 Signatures

Nested and Inner Type Summary

Modifier and Type	Class and Description
public static enum	Signature.TypeArg.Bounded.WildcardIndicator Models a type argument's wildcard indicator.

Method Summary

Modifier and Type	Method and Description
public Signature.RefTypeSig	Returns: the signature of the type bound boundType() Returns the signature of the type bound.
public Signature.TypeArg.Bounded.WildcardIndicator	Returns: the kind of wildcard wildcardIndicator() Returns the kind of wildcard.

Inherited from java.lang.classfile.Signature.TypeArg:: bounded extendsOf of superOf unbounded

Method Detail

boundType	back to summary
public Signature.RefTypeSig boundType() Returns the signature of the type bound. Returns:Signature.RefTypeSig the signature of the type bound

boundType

back to summary

public Signature.RefTypeSig boundType()

Returns the signature of the type bound.

Returns:Signature.RefTypeSig: the signature of the type bound

wildcardIndicator	back to summary
public Signature.TypeArg.Bounded.WildcardIndicator wildcardIndicator() Returns the kind of wildcard. Returns:Signature.TypeArg.Bounded.WildcardIndicator the kind of wildcard

wildcardIndicator

back to summary

public Signature.TypeArg.Bounded.WildcardIndicator wildcardIndicator()

Returns the kind of wildcard.

Returns:Signature.TypeArg.Bounded.WildcardIndicator: the kind of wildcard

java.lang.classfile back to summary

public final Enum Signature.TypeArg.Bounded.WildcardIndicator

Class Inheritance

extends Enum<Signature.TypeArg.Bounded.WildcardIndicator>

java.lang.Object
java.lang.Enum
java.lang.classfile.Signature.TypeArg.Bounded.WildcardIndicator

Models a type argument's wildcard indicator.

Since: 24
Java Language Specification: 4.5.1 Type Arguments of Parameterized Types
Java Virtual Machine Specification: 4.7.9.1 Signatures

Field Summary

Modifier and Type	Field and Description
public static final Signature.TypeArg.Bounded.WildcardIndicator	EXTENDS Upper-bound indicator `+`.
public static final Signature.TypeArg.Bounded.WildcardIndicator	NONE No wildcard (empty), an exact type.
public static final Signature.TypeArg.Bounded.WildcardIndicator	SUPER Lower-bound indicator `-`.

Constructor Summary

Access	Constructor and Description
private	WildcardIndicator()

Method Summary

Modifier and Type	Method and Description
public static Signature.TypeArg.Bounded.WildcardIndicator	valueOf(String name)
public static Signature.TypeArg.Bounded.WildcardIndicator[]	values()

Inherited from java.lang.Enum:: clone compareTo describeConstable equals finalize getDeclaringClass hashCode name ordinal toString valueOf

Field Detail

EXTENDS back to summary

EXTENDS	back to summary
public static final Signature.TypeArg.Bounded.WildcardIndicator EXTENDS Upper-bound indicator `+`. Also known as covariant. This is the `? extends` prefix in Java programs. See Also `WildcardType#getUpperBounds()`

public static final Signature.TypeArg.Bounded.WildcardIndicator EXTENDS

Upper-bound indicator +. Also known as covariant. This is the ? extends prefix in Java programs.

See Also: WildcardType#getUpperBounds()

NONE back to summary

NONE	back to summary
public static final Signature.TypeArg.Bounded.WildcardIndicator NONE No wildcard (empty), an exact type. Also known as invariant. This is the direct use of a reference type in Java programs. See Also `Type`

public static final Signature.TypeArg.Bounded.WildcardIndicator NONE

No wildcard (empty), an exact type. Also known as invariant. This is the direct use of a reference type in Java programs.

See Also: Type

SUPER back to summary

SUPER	back to summary
public static final Signature.TypeArg.Bounded.WildcardIndicator SUPER Lower-bound indicator `-`. Also known as contravariant. This is the `? super` prefix in Java programs. See Also `WildcardType#getLowerBounds()`

public static final Signature.TypeArg.Bounded.WildcardIndicator SUPER

Lower-bound indicator -. Also known as contravariant. This is the ? super prefix in Java programs.

See Also: WildcardType#getLowerBounds()

Constructor Detail

WildcardIndicator	back to summary
private WildcardIndicator()

Method Detail

valueOf	back to summary
public static Signature.TypeArg.Bounded.WildcardIndicator valueOf(String name)

values	back to summary
public static Signature.TypeArg.Bounded.WildcardIndicator[] values()

java.lang.classfile back to summary

public sealed Interface Signature.TypeArg.Unbounded

Known Direct Implementers: jdk.internal.classfile.impl.SignaturesImpl.UnboundedTypeArgImpl

Models an unbounded wildcard type argument *, or ? in Java programs. This type argument has an implicit upper bound of Object.

Since: 24
Java Language Specification: 4.5.1 Type Arguments of Parameterized Types
Java Virtual Machine Specification: 4.7.9.1 Signatures
See Also: WildcardType#getUpperBounds()

Method Summary

Inherited from java.lang.classfile.Signature.TypeArg:: bounded extendsOf of superOf unbounded

java.lang.classfile back to summary

public sealed Interface Signature.TypeParam

Known Direct Implementers: jdk.internal.classfile.impl.SignaturesImpl.TypeParamImpl

Models a signature for a type parameter of a generic class, interface, method, or constructor, which introduces a type variable.

Since: 24
Java Language Specification: 4.4 Type Variables
Java Virtual Machine Specification: 4.7.9.1 Signatures
See Also: GenericDeclaration#getTypeParameters(), TypeVariable, TypeVarSig

Method Summary

Modifier and Type	Method and Description
public Optional<Signature.RefTypeSig>	Returns: the class bound of the type parameter classBound() Returns the class bound of the type parameter.
public String	Returns: the name of the type parameter identifier() Returns the name of the type parameter.
public List<Signature.RefTypeSig>	Returns: the interface bounds of the type parameter interfaceBounds() Returns the interface bounds of the type parameter.
public static Signature.TypeParam	Returns: a signature for a type parameter of(String the name of the type parameter identifier, Signature.RefTypeSig the class bound of the type parameter, may be `null` classBound, Signature.RefTypeSig... the interface bounds of the type parameter interfaceBounds) Returns a signature for a type parameter.
public static Signature.TypeParam	Returns: a signature for a type parameter of(String the name of the type parameter identifier, Optional<Signature.RefTypeSig> the optional class bound of the type parameter classBound, Signature.RefTypeSig... the interface bounds of the type parameter interfaceBounds) Returns a signature for a type parameter.

Method Detail

classBound	back to summary
public Optional<Signature.RefTypeSig> classBound() Returns the class bound of the type parameter. This may be empty if this type parameter only has interface bounds. Returns:Optional<Signature.RefTypeSig> the class bound of the type parameter

classBound

back to summary

public Optional<Signature.RefTypeSig> classBound()

Returns the class bound of the type parameter. This may be empty if this type parameter only has interface bounds.

Returns:Optional<Signature.RefTypeSig>: the class bound of the type parameter

identifier	back to summary
public String identifier() Returns the name of the type parameter. Returns:String the name of the type parameter

identifier

back to summary

public String identifier()

Returns the name of the type parameter.

Returns:String: the name of the type parameter

interfaceBounds	back to summary
public List<Signature.RefTypeSig> interfaceBounds() Returns the interface bounds of the type parameter. This may be empty. Returns:List<Signature.RefTypeSig> the interface bounds of the type parameter

interfaceBounds

back to summary

public List<Signature.RefTypeSig> interfaceBounds()

Returns the interface bounds of the type parameter. This may be empty.

Returns:List<Signature.RefTypeSig>: the interface bounds of the type parameter

of back to summary

of	back to summary
public static Signature.TypeParam of(String identifier, Signature.RefTypeSig classBound, Signature.RefTypeSig... interfaceBounds) Returns a signature for a type parameter. Parameters identifier:String the name of the type parameter classBound:Signature.RefTypeSig the class bound of the type parameter, may be `null` interfaceBounds:Signature.RefTypeSig[] the interface bounds of the type parameter Returns:Signature.TypeParam a signature for a type parameter Exceptions IllegalArgumentException: if the name cannot be denoted

public static Signature.TypeParam of(String identifier, Signature.RefTypeSig classBound, Signature.RefTypeSig... interfaceBounds)

Returns a signature for a type parameter.

Parameters

identifier:String: the name of the type parameter
classBound:Signature.RefTypeSig: the class bound of the type parameter, may be null
interfaceBounds:Signature.RefTypeSig[]: the interface bounds of the type parameter

Returns:Signature.TypeParam

a signature for a type parameter

Exceptions

IllegalArgumentException:: if the name cannot be denoted

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public static Signature.TypeParam of(String identifier, Optional<Signature.RefTypeSig> classBound, Signature.RefTypeSig... interfaceBounds) Returns a signature for a type parameter. Parameters identifier:String the name of the type parameter classBound:Optional<Signature.RefTypeSig> the optional class bound of the type parameter interfaceBounds:Signature.RefTypeSig[] the interface bounds of the type parameter Returns:Signature.TypeParam a signature for a type parameter Exceptions IllegalArgumentException: if the name cannot be denoted

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public static Signature.TypeParam of(String identifier, Optional<Signature.RefTypeSig> classBound, Signature.RefTypeSig... interfaceBounds)

Returns a signature for a type parameter.

Parameters

identifier:String: the name of the type parameter
classBound:Optional<Signature.RefTypeSig>: the optional class bound of the type parameter
interfaceBounds:Signature.RefTypeSig[]: the interface bounds of the type parameter

Returns:Signature.TypeParam

a signature for a type parameter

Exceptions

IllegalArgumentException:: if the name cannot be denoted

Modifier and Type	Method and Description
public String	Returns: the name of the type variable identifier() Returns the name of the type variable.
public static Signature.TypeVarSig	Returns: a signature for a type variable of(String the name of the type variable identifier) Returns a signature for a type variable.

public sealed Interface Signature

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public sealed Interface Signature.ArrayTypeSig

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public sealed Interface Signature.BaseTypeSig

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public sealed Interface Signature.ClassTypeSig

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public sealed Interface Signature.RefTypeSig

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public sealed Interface Signature.ThrowableSig

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public sealed Interface Signature.TypeArg

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public sealed Interface Signature.TypeArg.Bounded

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public final Enum Signature.TypeArg.Bounded.WildcardIndicator

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public sealed Interface Signature.TypeArg.Unbounded

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public sealed Interface Signature.TypeParam

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public sealed Interface Signature.TypeVarSig

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