Urgent! the name of tree node can't show completely

Question

I create a tree dynamicly using data from database;when i want to add a new node to the tree.it will be added at the right place imediately but it's name will not show completely.
for example, i want to add a new node which name is "department",but the name on the tree it shown will be "departm...", i don't know what cause the 3 dot followed and how to remove the dot.
Can anybody tell me why? Thanks a lot

Answer 1

I use a IconNode which extend DefaultMutableTreeNode to create the node.
following is the IconNode:
import java.util.*;
import javax.swing.*;
import javax.swing.tree.*;
* @version 1.1 06/19/99
public class IconNode extends DefaultMutableTreeNode {
protected Icon icon;
protected String iconName;
protected boolean isActive=false;
public IconNode() {
this(null);
public IconNode(Object userObject) {
this(userObject, true, null);
public IconNode(Object userObject, boolean allowsChildren
, Icon icon) {
super(userObject, allowsChildren);
this.icon = icon;
public void setIcon(Icon icon) {
this.icon = icon;
public Icon getIcon() {
return icon;
public boolean isActive(){
return this.isActive;
public void setActive(boolean flag){
this.isActive=flag;
public String getIconName() {
if (iconName != null) {
return iconName;
else {
String str = userObject.toString();
int index = str.lastIndexOf(".");
if (index != -1) {
return str.substring(++index);
else {
return str;
public void setIconName(String name) {
iconName = name;
following is the operation of adding node:
private IconNode addObject(Object child) {
IconNode parentNode = null;
TreePath parentPath = appQueueTree.getSelectionPath();
if (parentPath == null) {
parentNode = rootNode;
else {
parentNode = (IconNode)
(parentPath.getLastPathComponent());
return addObject(parentNode, child, true);
private IconNode addObject(IconNode parent,
Object child,
boolean shouldBeVisible) {
IconNode childNode = new IconNode(child);
// TreeNodeData is a value object contains the data of node.
TreeNodeData temp=(TreeNodeData)child;
int flag=temp.getNodeType();// get the type of node
//to set the right icon of node
switch(flag){
case 1://childNode.setIcon();
break;
case 2:childNode.setIcon(leafIcon);
break;
case 3:childNode.setIcon(connectedDepartmentIcon);
if (parent == null) {
parent = rootNode;
treeModel.insertNodeInto(childNode, parent,
parent.getChildCount());
//Make sure the user can see the lovely new node.
if (shouldBeVisible) {
//to scroll the tree path to node newly be added.
appQueueTree.scrollPathToVisible(new TreePath(childNode.getPath()));
return childNode;