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Java Standard Edition (SE)

TypeMirror


compact3
javax.lang.model.type

Interface TypeMirror

  • All Superinterfaces:
    AnnotatedConstruct
    All Known Subinterfaces:
    ArrayType, DeclaredType, ErrorType, ExecutableType, IntersectionType, NoType, NullType, PrimitiveType, ReferenceType, TypeVariable, UnionType, WildcardType


    public interface TypeMirror
    extends AnnotatedConstruct
    Represents a type in the Java programming language. Types include primitive types, declared types (class and interface types), array types, type variables, and the null type. Also represented are wildcard type arguments, the signature and return types of executables, and pseudo-types corresponding to packages and to the keyword void.

    Types should be compared using the utility methods in Types. There is no guarantee that any particular type will always be represented by the same object.

    To implement operations based on the class of an TypeMirror object, either use a visitor or use the result of the getKind() method. Using instanceof is not necessarily a reliable idiom for determining the effective class of an object in this modeling hierarchy since an implementation may choose to have a single object implement multiple TypeMirror subinterfaces.

    Since:
    1.6
    See Also:
    Element, Types
    • Method Detail

      • getKind

        TypeKind getKind()
        Returns the kind of this type.
        Returns:
        the kind of this type
      • equals

        boolean equals(Object obj)
        Obeys the general contract of Object.equals. This method does not, however, indicate whether two types represent the same type. Semantic comparisons of type equality should instead use Types.isSameType(TypeMirror, TypeMirror). The results of t1.equals(t2) and Types.isSameType(t1, t2) may differ.
        Overrides:
        equals in class Object
        Parameters:
        obj - the object to be compared with this type
        Returns:
        true if the specified object is equal to this one
        See Also:
        Object.hashCode(), HashMap
      • toString

        String toString()
        Returns an informative string representation of this type. If possible, the string should be of a form suitable for representing this type in source code. Any names embedded in the result are qualified if possible.
        Overrides:
        toString in class Object
        Returns:
        a string representation of this type
      • accept

        <R,P> R accept(TypeVisitor<R,P> v,
                       P p)
        Applies a visitor to this type.
        Type Parameters:
        R - the return type of the visitor's methods
        P - the type of the additional parameter to the visitor's methods
        Parameters:
        v - the visitor operating on this type
        p - additional parameter to the visitor
        Returns:
        a visitor-specified result


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