com.google.gson.reflect

Class TypeToken<T>

java.lang.Object

com.google.gson.reflect.TypeToken<T>

public class TypeToken<T>
extends java.lang.Object

Represents a generic type 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:

TypeToken<List<String>> list = new TypeToken<List<String>>() {};

This syntax cannot be used to create type literals that have wildcard parameters, such as Class<?> or List<? extends CharSequence>.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
static <T> TypeToken<T>	get(java.lang.Class<T> type) Gets type literal for the given Class instance.
static TypeToken<?>	get(java.lang.reflect.Type type) Gets type literal for the given Type instance.
static TypeToken<?>	getArray(java.lang.reflect.Type componentType) Gets type literal for the array type whose elements are all instances of componentType.
static TypeToken<?>	getParameterized(java.lang.reflect.Type rawType, java.lang.reflect.Type... typeArguments) Gets type literal for the parameterized type represented by applying typeArguments to rawType.
java.lang.Class<? super T>	getRawType() Returns the raw (non-generic) type for this type.
java.lang.reflect.Type	getType() Gets underlying Type instance.
int	hashCode()
boolean	isAssignableFrom(java.lang.Class<?> cls) Deprecated. this implementation may be inconsistent with javac for types with wildcards.
boolean	isAssignableFrom(java.lang.reflect.Type from) Deprecated. this implementation may be inconsistent with javac for types with wildcards.
boolean	isAssignableFrom(TypeToken<?> token) Deprecated. this implementation may be inconsistent with javac for types with wildcards.
java.lang.String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Detail

getRawType

public final java.lang.Class<? super T> getRawType()

Returns the raw (non-generic) type for this type.

getType

public final java.lang.reflect.Type getType()

Gets underlying Type instance.

isAssignableFrom

@Deprecated
public boolean isAssignableFrom(java.lang.Class<?> cls)

Deprecated. this implementation may be inconsistent with javac for types with wildcards.

Check if this type is assignable from the given class object.

isAssignableFrom

@Deprecated
public boolean isAssignableFrom(java.lang.reflect.Type from)

Deprecated. this implementation may be inconsistent with javac for types with wildcards.

Check if this type is assignable from the given Type.

isAssignableFrom

@Deprecated
public boolean isAssignableFrom(TypeToken<?> token)

Deprecated. this implementation may be inconsistent with javac for types with wildcards.

Check if this type is assignable from the given type token.

hashCode

public final int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public final boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

toString

public final java.lang.String toString()

Overrides:

toString in class java.lang.Object

get

public static TypeToken<?> get(java.lang.reflect.Type type)

Gets type literal for the given Type instance.

get

public static <T> TypeToken<T> get(java.lang.Class<T> type)

Gets type literal for the given Class instance.

getParameterized

public static TypeToken<?> getParameterized(java.lang.reflect.Type rawType,
                                            java.lang.reflect.Type... typeArguments)

Gets type literal for the parameterized type represented by applying typeArguments to rawType.

getArray

public static TypeToken<?> getArray(java.lang.reflect.Type componentType)

Gets type literal for the array type whose elements are all instances of componentType.