How to build n-ary ? in Java

Sir, I am not looking for n-arry. Its is quite different from n-ary.
Its a concept of trees. Till now we have one root node and 2 or 3 or 4 child nodes. But i want to build a tree with one root node and n child nodes at the same level.
root
n n1 n2 n3 n4 n5 ....nn
I think you got the point.. Otherwise please give your maild id sir, i will send the documentation of it.
If know please tell me the solution .
once again thanks.
bye

Massive crosspost. Answer here if you must.
http://forum.java.sun.com/thread.jsp?forum=4&thread=444422

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