Why "Ct" prefix?

[hlship]

Just curious, why are the classes prefixed "Ct"?

[chiba]

Ct is "Compile Time" since CtClass represents
a class that has not been loaded into the JVM
while java.lang.Class represents a runtime class,
which has been loaded. At first, Javassist could
not work with a class loader. So Ct was not a
bad choice.

I know you will say "Why not Lt (Load time)?"
I also want to rename so but it's too late.