import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import org.richfaces.model.TreeNodeImpl;
@ManagedBean
@RequestScoped
public class Tree extends TreeNodeImpl {
private Tree stationRoot;
private Tree rootNodes;
private Object data;

public Tree() {
super();
}
public Tree(boolean leaf, Object data) {
super(leaf);
this.data = data;
}
public Object getData() {
return data;
}
@Override
public String toString() {
return super.toString() + ">>" + data;
}
public Tree getRootNodes() {
if (rootNodes == null) {
String[] author_collection = {"Ravindra Nath Tagore - Geetanjali",
"David Bowie - Let's Dance",
"Paulo Coelho  - Alchemist",
"Kim Carnes - Bette Davis Eyes",
"KC & the Sunshine Band - Give It Up"};
stationRoot = new Tree(false, "Books Collection");
for (int i = 0; i < author_collection.length; i++) {
Tree child = new Tree(true, author_collection[i]);
stationRoot.addChild(i, child);
}
rootNodes = new Tree();
rootNodes.addChild(0, stationRoot);
}
return rootNodes;
}
}