Tree does not show node correctly but node are inserted well ?

Question

hi,
i am haveing tree with
1. Root node (grand parent (only one))
2.Parent nodes(many nodes)
3.child nodes(many nodes)
i add child node in a particular parent node . this is done dynamically when socket thread found any any user .when socket listener thread found any user
it add one user node (child node) in one of parent node
when add child node some time tree view like this
root
|_ parent1
|    |_ child1
|    |_ child2
|_ parent2  
|    |_ child1
|    |
|    |
|    |_child2
|_ parent3
     |_child1
     _child2please have a look in parent 2 and parent 3. in parent 2 node just long gap
between child nodes. But parent3 there is no line between childs.
when a thread found an user on network , to add an node in tree i use
treeModel.insertNodeInto(node, treenode, index);
        expandSelectedNode();But, this is generally happend when a node added by socket thread. So this i changed this section of code into EventQueu.invokeLater(); to do add by event queue thread. But it still come like this

Answer 1

EventQueu.invokeLater();From where do you call this?
We may need to see a small example code that can reproduce the problem.