FunTester

Feb 7, 2025 · Backend Development

Mastering Byteman: How AT LINE, AT READ, and Other Specifiers Control Java Bytecode Injection

This article explains Byteman's injection point specifiers—AT LINE, AT READ, AFTER READ, AT WRITE, AFTER WRITE, AT INVOKE, AFTER INVOKE, AT NEW, AFTER NEW, AT SYNCHRONIZE, AFTER SYNCHRONIZE, AT THROW, and AT EXCEPTION EXIT—detailing their syntax, matching rules, counting options, and practical usage in Java bytecode instrumentation.