Package javassist

The Javassist Core API.

Javassist (Java programming assistant) makes bytecode engineering simple. It is a class library for editing bytecode in Java; it enables Java programs to define a new class at runtime and to modify a given class file when the JVM loads it.

The most significant class of this package is CtClass. See the description of this class first.

To know the version number of this package, type the following command:

java -jar javassist.jar

It prints the version number on the console.

Interface Summary

Interface	Description
ClassPath	ClassPath is an interface implemented by objects representing a class search path.
CodeConverter.ArrayAccessReplacementMethodNames	Interface containing the method names to be used as array access replacements.
Translator	An observer of Loader.

Class Summary

Class	Description
ByteArrayClassPath	A ByteArrayClassPath contains bytes that is served as a class file to a ClassPool.
ClassClassPath	A search-path for obtaining a class file by getResourceAsStream() in java.lang.Class.
ClassMap	A hash table associating class names with different names.
ClassPool	A container of CtClass objects.
CodeConverter	Simple translator of method bodies (also see the javassist.expr package).
CodeConverter.DefaultArrayAccessReplacementMethodNames	Default implementation of the ArrayAccessReplacementMethodNames interface giving default values for method names to be used for replacing accesses to array elements.
CtBehavior	CtBehavior represents a method, a constructor, or a static constructor (class initializer).
CtClass	An instance of CtClass represents a class.
CtConstructor	An instance of CtConstructor represents a constructor.
CtField	An instance of CtField represents a field.
CtField.Initializer	Instances of this class specify how to initialize a field.
CtMember	An instance of CtMember represents a field, a constructor, or a method.
CtMethod	An instance of CtMethod represents a method.
CtMethod.ConstParameter	Instances of this class represent a constant parameter.
CtNewConstructor	A collection of static methods for creating a CtConstructor.
CtNewMethod	A collection of static methods for creating a CtMethod.
CtPrimitiveType	An instance of CtPrimitiveType represents a primitive type.
Loader	The class loader for Javassist.
Loader.Simple	A simpler class loader.
LoaderClassPath	A class search-path representing a class loader.
Modifier	The Modifier class provides static methods and constants to decode class and member access modifiers.
SerialVersionUID	Utility for calculating serialVersionUIDs for Serializable classes.
URLClassPath	A class search-path specified with URL (http).

Exception Summary

Exception	Description
CannotCompileException	Thrown when bytecode transformation has failed.
NotFoundException	Signals that something could not be found.