从java中的唯一代码列表构建树结构

I have list of String values like this...A, A_AChild, A_AChild_furtherChild, A_BChild, A_CChild etc. These value seperated by 'UnderScore' represent that A is parent AChild is its Child and AChild is parent of furtherChild. similary BChild's and CChild's parent is A. I need to create a tree like structure for representation.I have list of String values like this...A, A_A