T - the generic type parameter.public class GenericType<T> extends Object
T.
Supports in-line instantiation of objects that represent generic types with
actual type parameters. An object that represents any parameterized type may
be obtained by sub-classing GenericType. Alternatively, an object
representing a concrete parameterized type can be created using a
GenericType(java.lang.reflect.Type) and manually specifying
the actual (parameterized) type.
For example:
GenericType<List<String>> stringListType = new GenericType<List<String>>() {};
Or:
public class MyGenericType extends GenericType<List<String>> { ... }
...
MyGenericType stringListType = new MyGenericType();
Note that due to the Java type erasure limitations the parameterized type information
must be specified on a subclass, not just during the instance creation. For example,
the following case would throw an IllegalArgumentException:
public class MyGenericType<T> extends GenericType<T> { ... }
...
// The type is only specified on instance, not in a sub-class
MyGenericType<List<String>> stringListType =
new MyGenericType<List<String>>();
| Modifier | Constructor and Description |
|---|---|
protected |
GenericType()
Constructs a new generic type, deriving the generic type and class from
type parameter.
|
|
GenericType(Type genericType)
Constructs a new generic type, supplying the generic type
information and deriving the class.
|
| Modifier and Type | Method and Description |
|---|---|
boolean |
equals(Object obj) |
Class<?> |
getRawType()
Returns the object representing the class or interface that declared
the type represented by this generic type instance.
|
Type |
getType()
Retrieve the type represented by the generic type instance.
|
int |
hashCode() |
String |
toString() |
protected GenericType()
IllegalArgumentException - in case the generic type parameter value is not
provided by any of the subclasses.public GenericType(Type genericType)
genericType - the generic type.IllegalArgumentException - if genericType is null or not an instance of
Class or ParameterizedType whose raw
type is an instance of Class.public final Type getType()
public final Class<?> getRawType()
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