Bytecode Instrumentation

| 2004 JavaOne

Conference | Session 3042 Copyright Hewlett Packard Co., 2004.

Analyzing your changes

• Use javap to analyze the file created

public void a1();

Code:

0: iconst_0

1: iconst_0

2: invokestatic #37; //Method MyMon.countMethodEntry:(II)V

5: ldc #5; //int 1000000

7: istore_1

…

36: return

public void a2();

Code:

0: ldc #5; //int 1000000

2: istore_1

…