Package com.google.gson.reflect
Class TypeToken<T>
- java.lang.Object
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- com.google.gson.reflect.TypeToken<T>
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public class TypeToken<T> extends Object
Represents a generic typeT
. 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<?>
orList<? extends CharSequence>
.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description boolean
equals(Object o)
static <T> TypeToken<T>
get(Class<T> type)
Gets type literal for the givenClass
instance.static TypeToken<?>
get(Type type)
Gets type literal for the givenType
instance.static TypeToken<?>
getArray(Type componentType)
Gets type literal for the array type whose elements are all instances ofcomponentType
.static TypeToken<?>
getParameterized(Type rawType, Type... typeArguments)
Gets type literal for the parameterized type represented by applyingtypeArguments
torawType
.Class<? super T>
getRawType()
Returns the raw (non-generic) type for this type.Type
getType()
Gets underlyingType
instance.int
hashCode()
boolean
isAssignableFrom(TypeToken<?> token)
Deprecated.this implementation may be inconsistent with javac for types with wildcards.boolean
isAssignableFrom(Class<?> cls)
Deprecated.this implementation may be inconsistent with javac for types with wildcards.boolean
isAssignableFrom(Type from)
Deprecated.this implementation may be inconsistent with javac for types with wildcards.String
toString()
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Method Detail
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getRawType
public final Class<? super T> getRawType()
Returns the raw (non-generic) type for this type.
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getType
public final Type getType()
Gets underlyingType
instance.
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isAssignableFrom
@Deprecated public boolean isAssignableFrom(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.
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isAssignableFrom
@Deprecated public boolean isAssignableFrom(Type from)
Deprecated.this implementation may be inconsistent with javac for types with wildcards.Check if this type is assignable from the given Type.
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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.
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get
public static <T> TypeToken<T> get(Class<T> type)
Gets type literal for the givenClass
instance.
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getParameterized
public static TypeToken<?> getParameterized(Type rawType, Type... typeArguments)
Gets type literal for the parameterized type represented by applyingtypeArguments
torawType
.
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