Show Different Classes in Tree View Structure for Documentation

I want to know if there is such tool that can show my class开发者_开发知识库es hierarchy in a tree, e.g.

public Class ClassA
{
ClassB variableb;
ClassC variableC; 
}

so, it shows me something like

ClassA

• ClassB
• ClassC

I have shown in bullted format, I just want that this kind of things be shown in tree view, is there any tool which can help me create this tree of classes ??

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I got the solution in the form of class Diagram, don't why I didnt think of them at first place. :)