Reflection is expensive? Illusion!

Reflection invocation is a little bit more expensive comparing to the direct call, but it wasn't very slow and it's not slow at all now in JDK 6. It is looking up by name that takes long time.

Operation	2000/11 (probably jdk 1.3.1)	2003/1 (probably jdk 1.3.1)	2004/10 (jdk1.4.2_03)	2007/2 (jdk1.6.0_b105)
100,000 regular calls	2664ms	281ms	203ms	78ms
100,000 reflection calls without lookup	4216ms	297ms	250ms	78ms
100,000 reflection calls with lookup	45505ms	938ms	562ms	203ms
1,000,000 regular calls	27840ms	2578ms	1828ms	594ms
1,000,000 reflection calls without lookup	43863ms	2782ms	2485ms	641ms
1,000,000 reflection calls with lookup	47097ms	5453ms	9343ms	1984ms
10,000,000 regular calls	-	25906ms	17766ms	5063ms
10,000,000 reflection calls without lookup	-	27891ms	24813ms	6141ms
10,000,000 reflection calls with lookup	-	54843ms	93611ms	20093ms

Link: What are the performance costs involved in Java reflection? E.g., looking up a method by name and then invoking it.