Serializable
public final class SerializedLambda extends Object implements Serializable
Implementors of serializable lambdas, such as compilers or language runtime libraries, are expected to ensure that instances deserialize properly. One means to do so is to ensure that the writeReplace
method returns an instance of SerializedLambda
, rather than allowing default serialization to proceed.
SerializedLambda
has a readResolve
method that looks for a (possibly private) static method called $deserializeLambda$(SerializedLambda)
in the capturing class, invokes that with itself as the first argument, and returns the result. Lambda classes implementing $deserializeLambda$
are responsible for validating that the properties of the SerializedLambda
are consistent with a lambda actually captured by that class.
The identity of a function object produced by deserializing the serialized form is unpredictable, and therefore identity-sensitive operations (such as reference equality, object locking, and System.identityHashCode()
) may produce different results in different implementations, or even upon different deserializations in the same implementation.
Constructor | Description |
---|---|
SerializedLambda |
Create a SerializedLambda from the low-level information present at the lambda factory site. |
Modifier and Type | Method | Description |
---|---|---|
Object |
getCapturedArg |
Get a dynamic argument to the lambda capture site. |
int |
getCapturedArgCount() |
Get the count of dynamic arguments to the lambda capture site. |
String |
getCapturingClass() |
Get the name of the class that captured this lambda. |
String |
getFunctionalInterfaceClass() |
Get the name of the invoked type to which this lambda has been converted |
String |
getFunctionalInterfaceMethodName() |
Get the name of the primary method for the functional interface to which this lambda has been converted. |
String |
getFunctionalInterfaceMethodSignature() |
Get the signature of the primary method for the functional interface to which this lambda has been converted. |
String |
getImplClass() |
Get the name of the class containing the implementation method. |
int |
getImplMethodKind() |
Get the method handle kind (see MethodHandleInfo ) of the implementation method. |
String |
getImplMethodName() |
Get the name of the implementation method. |
String |
getImplMethodSignature() |
Get the signature of the implementation method. |
final String |
getInstantiatedMethodType() |
Get the signature of the primary functional interface method after type variables are substituted with their instantiation from the capture site. |
public SerializedLambda(Class<?> capturingClass, String functionalInterfaceClass, String functionalInterfaceMethodName, String functionalInterfaceMethodSignature, int implMethodKind, String implClass, String implMethodName, String implMethodSignature, String instantiatedMethodType, Object[] capturedArgs)
SerializedLambda
from the low-level information present at the lambda factory site.capturingClass
- The class in which the lambda expression appearsfunctionalInterfaceClass
- Name, in slash-delimited form, of static type of the returned lambda objectfunctionalInterfaceMethodName
- Name of the functional interface method for the present at the lambda factory sitefunctionalInterfaceMethodSignature
- Signature of the functional interface method present at the lambda factory siteimplMethodKind
- Method handle kind for the implementation methodimplClass
- Name, in slash-delimited form, for the class holding the implementation methodimplMethodName
- Name of the implementation methodimplMethodSignature
- Signature of the implementation methodinstantiatedMethodType
- The signature of the primary functional interface method after type variables are substituted with their instantiation from the capture sitecapturedArgs
- The dynamic arguments to the lambda factory site, which represent variables captured by the lambdapublic String getCapturingClass()
public String getFunctionalInterfaceClass()
public String getFunctionalInterfaceMethodName()
public String getFunctionalInterfaceMethodSignature()
public String getImplClass()
public String getImplMethodName()
public String getImplMethodSignature()
public int getImplMethodKind()
MethodHandleInfo
) of the implementation method.public final String getInstantiatedMethodType()
public int getCapturedArgCount()
public Object getCapturedArg(int i)
i
- the argument to capture
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/invoke/SerializedLambda.html