All Classes

Class	Description
AbstractCommand	Abstract base class for commands.
ArrayCommand	A ArrayCommand is responsible for handling operations on arrays.
AuthCommand	The auth command is responsible for checking that the client knows the server's auth secret.
Base64	A very fast and memory efficient class to encode and decode to and from BASE64 in full accordance with RFC 2045. On Windows XP sp1 with 1.4.2_04 and later ;), this encoder and decoder is about 10 times faster on small arrays (10 - 1000 bytes) and 2-3 times as fast on larger arrays (10000 - 1000000 bytes) compared to sun.misc.Encoder()/Decoder(). On byte arrays the encoder is about 20% faster than Jakarta Commons Base64 Codec for encode and about 50% faster for decoding large arrays.
CallbackClient	A CallbackClient is responsible for managing communication channels: channels are created as needed (e.g., one per concurrent thread) and are closed after a certain time.
CallbackConnection	Default implementation of the CommunicationChannel interface using TCP sockets.
CallCommand	A CallCommand is responsible for parsing a call command and calling the method on the target object.
ClassLoadingStrategy	Strategy interface to load a class from a fully qualified name.
ClientServer	This class creates the JavaServer and the PythonClient necessary to communicate with a Python virtual machine with the new threading model.
ClientServer.ClientServerBuilder	Helper class to make it easier and self-documenting how a ClientServer is constructed.
ClientServerConnection
Command	This interface must be implemented by all commands.
ConstructorCommand	A ConstructorCommand is responsible for calling the constructors of a Java class.
CurrentThreadClassLoadingStrategy	This class loading strategy uses the current thread's ClassLoader to load a class from a fully qualified name.
DefaultApplication	Default application that can be used to quickly test Py4J.
DefaultGatewayServerListener	This class implements a default GatewayServerListener.
DirCommand
ExceptionCommand
FieldCommand	A FieldCommand is responsible for accessing and setting fields of objects.
Gateway	A Gateway manages various states: entryPoint, references to objects returned to a Python program, etc.
GatewayConnection	Manage the connection between a Python program and a Gateway.
GatewayServer	This class enables Python programs to access a Java program.
GatewayServer.GatewayServerBuilder	Helper class to make it easier and self-documenting how a GatewayServer is constructed.
GatewayServerListener	A client can implement this listener to be notified of Gateway events.
HelpPageCommand	A HelpPageCommand is responsible for generating a help page for a Java object or Java class.
HelpPageGenerator	The HelpPageGenerator generates a help page (a String) for a class or a method.
JavaServer	This class extends GatewayServer by implementing a new threading model: a thread always use the same connection to the other side so callbacks are executed in the calling thread.
JVMView	A JVM view keeps track of imports and import searches.
JVMViewCommand	A JVMViewCommand is responsible for managing JVM views: creating views, adding imports, searching for fully qualified names.
ListCommand	A ListCommand is responsible for handling operations on lists (e.g., slicing).
LRUCache<K,V>	Implementation of a Least Recently Used cache.
MemoryCommand	The MemoryCommand is responsible for handling garbage collection requests from the Python side, i.e., when a java object is no longer used by the Python program.
MethodDescriptor	A MethodDescriptor wraps the signature of a method (name, container, parameters).
MethodInvoker	A MethodInvoker translates a call made in a Python Program into a call to a Java method.
NetworkUtil	Utility class used to perform network operations.
Protocol	This class defines the protocol used to communicate between two virtual machines (e.g., Python and Java).
Py4JAuthenticationException
Py4JClass	Model of a Java class used to create a help page.
Py4JClientConnection
Py4JException	Exception raised when an error is encountered while using Py4J.
Py4JField	Model of a Java field used to create a help page.
Py4JJavaException	Exception raised when an exception is thrown in the client code.
Py4JJavaServer	Interface that describes the operations a server must support to receive requests from the Python side.
Py4JMember	Model of a Java member (class, method, or field) used to create a help page.
Py4JMethod	Model of a Java method used to create a help page.
Py4JNetworkException	Exception raised when a network error is encountered while using Py4J.
Py4JNetworkException.ErrorTime
Py4JPythonClient	Interface that describes the operations a client must support to make requests to the Python side.
Py4JPythonClientPerThread
Py4JServerConnection
PythonClient	Subclass of CallbackClient that implements the new threading model, ensuring that each thread uses its own connection.
PythonProxyHandler	A PythonProxyHandler is used in place of a Python object.
ReflectionCommand	The ReflectionCommand is responsible for accessing packages, classes, and static members.
ReflectionEngine	The reflection engine is responsible for accessing the classes, the instances and members in a JVM.
ReflectionShim
ReflectionUtil	Global utility to load classes and perform general reflection operations that can be customized by Strategy classes.
ReturnObject	A ReturnObject wraps a value returned by a method.
RootClassLoadingStrategy	This class loading strategy just uses the class current class loader to load a class from a fully qualified name.
ShutdownGatewayServerCommand	The ShutdownGatewayServerCommand is responsible for shutting down the GatewayServer.
StreamCommand	A StreamCommand is like a CallCommand, but returns the value directly.
StringUtil	String utility class providing operations to escape and unescape new lines.
TypeConverter	A TypeConverter converts a Python type into a Java Type.
TypeUtil	This class is responsible for the type conversion between Python types and Java types.