public class TypeReference<T> extends Object
T. Java doesn't yet provide a way to
represent generic types, so this class does. Forces clients to create a
subclass of this class which enables retrieval the type information even at
runtime.
For example, to create a type literal for List<String>, you can
create an empty anonymous inner class:
TypeReference<List<String>> list = new TypeReference<List<String>>() {};
This syntax cannot be used to create type literals that have wildcard
parameters, such as Class<?> or List<? extends CharSequence>.| Modifier and Type | Field and Description |
|---|---|
static Type |
LIST_STRING |
protected Type |
type |
| Modifier | Constructor and Description |
|---|---|
protected |
TypeReference()
Constructs a new type literal.
|
protected |
TypeReference(Type... actualTypeArguments) |
protected TypeReference()
Clients create an empty anonymous subclass. Doing so embeds the type parameter in the anonymous class's type hierarchy so we can reconstitute it at runtime despite erasure.
protected TypeReference(Type... actualTypeArguments)
public Type getType()
Type instance.Copyright © 2022 Alibaba Group. All rights reserved.