public void addChild(TreeNode<T> child) {
Assert.notNull(child, "child");
if (children == null) {
children = new LinkedList<TreeNode<T>>();
}
children.add(child);
child.setParent(this);
}
public boolean removeChild(TreeNode<T> child) {
Assert.notNull(child, "child");
boolean suceess = false;
if (children != null) {
suceess = children.remove(child);
if (suceess) {
child.setParent(null);
}
}
return suceess;
}
