java 树结构代码

 public class TreeNodes{
  IList<BranchInfo> branchs = BranchInfoManager.getAllBranchInfos();
  foreach(BranchInfo branch in branchs){
    TreeNode branchNode = new TreeNodeCreate(branch.BranchName,branch.BranchId.toString(),"","~/Images/menuclose.gif");
    IList<DepartInfo> departs = DepartInfoManager.getAllDepartByBranchId(branch.BranchId);
    foreach(DepartInfo depart in departs){
     TreeNode departInfo = TreeNodeCreate(depart.DepartName,depart.DepartId.ToString(),"","~/Images/CloseTree.gif");
     IList<UserInfo> users = UserInfoManager.getUsersByDepartId(depart.DepartId);
     foreach(UserInfo user in users){
      if(user.UserId != (Session["CurrentUser"] as UserInfo).UserId){
       TreeNode userNode = TreeNodeCreate(user.UserName,user.UserId,"","~/Images/person.gif");
       /*
                TreeNode userNode = TreeNodeCreate(user.UserName, user.UserId, "", "~/Images/person.gif");                        departNode.ChildNodes.Add(userNode);//将人员添加到部门节点                    }                }                branchNode.ChildNodes.Add(departNode);//将部门节点添加到机构节点            }            tvUsers.Nodes.Add(branchNode);//将机构节点添加到treeview     &n