Bytecode Instrumentation

| 2004 JavaOne
SM
Conference | Session 3042 Copyright Hewlett Packard Co., 2004.
4
Bytecode instrumentation
•
Modification of the class file content
• Based on early object code modification work
• Applied to Java™ as bytecode manipulation
─ Support for optimization, generics, AOP, …
─ JVM™ hooks: -Xprep, preprocessor as a property
─ Special class loader hooks
• Java Virtual Machine Tools Interface (JVMTI)
─ Includes callback mechanism for class loading
─ Enables bytecode instrumentation
─ JVMTI (JSR 163) in J2SE 5.0