Types JDK 1.6)

public Element asElement (TypeMirror t)

Returns the element corresponding to a type.

Returns the element corresponding to a type.
The type may be a DeclaredType or TypeVariable.
Returns null if the type is not one with a
corresponding element.
Returns: the element corresponding to the given type

public TypeMirror asMemberOf (DeclaredType containing, Element element)

Returns the type of an element when that element is viewed as a member of, or otherwise directly contained by, a given type.

Returns the type of an element when that element is viewed as
a member of, or otherwise directly contained by, a given type.
For example,
when viewed as a member of the parameterized type Set<String>,
the Set.add method is an ExecutableType
whose parameter is of type String.
Returns: the type of the element as viewed from the containing type
Parameters:
- containing - the containing type
- element - the element
Throws:
- IllegalArgumentException - if the element is not a valid one for the given type

public TypeElement boxedClass (PrimitiveType p)

Returns the class of a boxed value of a given primitive type.

public TypeMirror capture (TypeMirror t)

Applies capture conversion to a type.

public boolean contains (TypeMirror t1, TypeMirror t2)

Tests whether one type argument contains another.

public List<TypeMirror> directSupertypes (TypeMirror t)

Returns the direct supertypes of a type.

public TypeMirror erasure (TypeMirror t)

Returns the erasure of a type.

public ArrayType getArrayType (TypeMirror componentType)

Returns an array type with the specified component type.

public DeclaredType getDeclaredType (DeclaredType containing, TypeElement typeElem, TypeMirror typeArgs)

Returns the type corresponding to a type element and actual type arguments, given a containing type of which it is a member.

Returns the type corresponding to a type element and actual type arguments, given a containing type of which it is a member. The parameterized type Outer<String>.Inner<Number>, for example, may be constructed by first using Types.getDeclaredType(TypeElement, TypeMirror...) to get the type Outer<String>, and then invoking this method.

If the containing type is a parameterized type, the number of type arguments must equal the number of typeElem's formal type parameters. If it is not parameterized or if it is null, this method is equivalent to getDeclaredType(typeElem, typeArgs).
Returns: the type corresponding to the type element and actual type arguments, contained within the given type
Parameters:
- containing - the containing type, or {@code null} if none
- typeElem - the type element
- typeArgs - the actual type arguments
Throws:
- IllegalArgumentException - if too many or too few type arguments are given, or if an inappropriate type argument, type element, or containing type is provided

public DeclaredType getDeclaredType (TypeElement typeElem, TypeMirror typeArgs)

Returns the type corresponding to a type element and actual type arguments.

Returns the type corresponding to a type element and actual type arguments. Given the type element for Set and the type mirror for String, for example, this method may be used to get the parameterized type Set<String>.

The number of type arguments must either equal the number of the type element's formal type parameters, or must be zero. If zero, and if the type element is generic, then the type element's raw type is returned.

If a parameterized type is being returned, its type element must not be contained within a generic outer class. The parameterized type Outer<String>.Inner<Number>, for example, may be constructed by first using this method to get the type Outer<String>, and then invoking Types.getDeclaredType(DeclaredType, TypeElement, TypeMirror...).
Returns: the type corresponding to the type element and actual type arguments
Parameters:
- typeElem - the type element
- typeArgs - the actual type arguments
Throws:
- IllegalArgumentException - if too many or too few type arguments are given, or if an inappropriate type argument or type element is provided

public NoType getNoType (TypeKind kind)

Returns a pseudo-type used where no actual type is appropriate.

Returns a pseudo-type used where no actual type is appropriate.
The kind of type to return may be either
VOID or NONE.
For packages, use
Elements.getPackageElement(CharSequence).asType()
instead.
Returns: a pseudo-type of kind {@code VOID} or {@code NONE}
Parameters:
- kind - the kind of type to return
Throws:
- IllegalArgumentException - if {@code kind} is not valid

public NullType getNullType ()

Returns the null type.

Returns the null type. This is the type of null.
Returns: the null type

public PrimitiveType getPrimitiveType (TypeKind kind)

Returns a primitive type.

public WildcardType getWildcardType (TypeMirror extendsBound, TypeMirror superBound)

Returns a new wildcard type argument.

public boolean isAssignable (TypeMirror t1, TypeMirror t2)

Tests whether one type is assignable to another.

public boolean isSameType (TypeMirror t1, TypeMirror t2)

Tests whether two TypeMirror objects represent the same type.

Caveat: if either of the arguments to this method represents a wildcard, this method will return false. As a consequence, a wildcard is not the same type as itself. This might be surprising at first, but makes sense once you consider that an example like this must be rejected by the compiler:

 
   List<?> list = new ArrayList<Object>();
   list.add(list.get(0));

Returns: {@code true} if and only if the two types are the same
Parameters:
- t1 - the first type
- t2 - the second type

public boolean isSubsignature (ExecutableType m1, ExecutableType m2)

Tests whether the signature of one method is a subsignature of another.

public boolean isSubtype (TypeMirror t1, TypeMirror t2)

Tests whether one type is a subtype of another.

public PrimitiveType unboxedType (TypeMirror t)

Returns the type (a primitive type) of unboxed values of a given type.