# Apache Commons BCEL 6.6.1 API

Packages
Package | Description
--- | ---
org.apache.bcel | This package contains basic classes for the Byte Code Engineering Library and constants defined by the JVM specification.
org.apache.bcel.classfile | This package contains the classes that describe the structure of a Java class file and a class file parser.
org.apache.bcel.generic | This package contains the "generic" part of the Byte Code Engineering Library, i.e., classes to dynamically modify class objects and byte code instructions.
org.apache.bcel.util | This package contains utility classes for the Byte Code Engineering Library, namely:
org.apache.bcel.verifier | BCEL's verifier JustIce is there to help you dump correct Java class files created or modified with BCEL.
org.apache.bcel.verifier.exc | Exception classes used by JustIce, mostly used internally.
org.apache.bcel.verifier.statics | Provides PassVerifier classes used internally by JustIce.
org.apache.bcel.verifier.structurals | Provides a PassVerifier class mostly used internally by JustIce, yielding a control flow graph for public use as a nice side effect.

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