Bytecode Libraries
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High-level library for generating JVM bytecode
Last Release on Jul 21, 2026
A bytecode writer that creates .class files at runtime
Last Release on Mar 1, 2024
Flink Shaded ASM 9
Last Release on Jan 12, 2026
Bytecode Representation
Last Release on Dec 16, 2025
Java reflection and bytecode analysis toolkit, usable for all kinds of introspection and analysis of running code.
Last Release on Mar 18, 2026
Java bytecode manipulation and analysis framework used for dynamic code generation and modification.
Last Release on Jan 12, 2011

Relocated → org.ow2.asm » asm
Javassist (JAVA programming ASSISTant) makes Java bytecode manipulation simple. It is a class library for editing bytecodes in Java.
Last Release on Sep 20, 2012

Relocated → org.javassist » javassist
A private copy of the ASM framework rebased for Jinq to avoid dependency conflicts
Last Release on Jun 8, 2025
Bytecode Assembler
Last Release on Dec 16, 2025
Bytecode Disassembler
Last Release on Dec 16, 2025