bypass the classloader's parent delegate model

is there a method to bypass the classloader's parent delegate model?

say,

if i define a new classloader,and i wish get a java.lang.String class defined by me other then java.lang.String via my classloader other than via its parent,how can i do?

Message was edited by:

well.Head

[310 byte] By [well.Heada] at [2007-11-26 20:13:22]