JSP and classes

Question

I created a JSP file in ..webapps/myapp folder .I want to create my own DateFormatter class in a separate file and use this class in the JSP file.I tried putting it in .../WEB-INF/classes folder but it gives error
An error occurred at line: 43 in the jsp file: /myformconfirm2.jsp
DateFormatter cannot be resolved to a type.I even tried creating a package under /WEB-INF/classes but theres no use...ne suggestions???am i supposed 2 add entry in web.xml?

Answer 1

Hi Amit,
I have this code for tree generation
can u please guide me for display this in a JSP page
or if u can plz send me the code too for that
please..
package net.sf.jsptree.example;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.AbstractCollection;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.StringTokenizer;
import java.util.Vector;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import javax.swing.tree.DefaultMutableTreeNode;
import net.sf.jsptree.component.JSPTreeNode;
import net.sf.jsptree.component.JSPTreeNodeImpl;
import net.sf.jsptree.tree.*;
* @author Vladislav Kamensky
public class TestFactory implements TreeFactory {
    private static TreeFactory m_instance = new TestFactory();
    TestFactory() {
    public static TreeFactory getInstance() {
        return m_instance;
     * Returns new <code>Tree</code> instance by its name.
     * @param p_name The name of the tree to be built.
    public TreeStructureModel getTree(String p_name) {
        return buildTree();
    static TreeStructureModel a_tree = new TreeModel();
    static TreeStructureModel tree= new TreeModel();
    static JSPTreeNodeImpl parentJSPTreeNodeImpl = null;
    static JSPTreeNodeImpl parentDirJSPTreeNodeImpl = null;
    static List list = new ArrayList();
    static JSPTreeNodeImpl curDir=null;
    static JSPTreeNodeImpl tempJSPTreeNodeImpl = null;
    String sss="D:\\com";
JSPTreeNodeImpl addNodes(TreeStructureModel tree, JSPTreeNodeImpl curTop, File dir) {
        String curPath = dir.getPath();
        //String sss=dir.
        curDir =new JSPTreeNodeImpl(dir.getPath());
        curDir.setLabel(dir.getName());
        if (curTop != null) { // should only be null at root
             //curTop.addProperty(curDir);// add(curDir);
             tree.addChildToParent(curTop,curDir);
        Vector vc = new Vector();
        String[] tmp = dir.list();
        for (int i = 0; i < tmp.length; i++)
          vc.addElement(tmp);
Collections.sort(vc, String.CASE_INSENSITIVE_ORDER);
File f;
Vector files = new Vector();
// Make two passes, one for Dirs and one for Files. This is #1.
for (int i = 0; i < vc.size(); i++) {
String thisObject = (String) vc.elementAt(i);
String newPath;
if (curPath.equals("."))
newPath = thisObject;
else
newPath = curPath + File.separator + thisObject;
if ((f = new File(newPath)).isDirectory())
addNodes(tree,curDir, f);
else
files.addElement(thisObject);
// Pass two: for files.
//JSPTreeNodeImpl tempJSPTreeNodeImpl = null;
for (int fnum = 0; fnum < files.size(); fnum++)
     String s=(String)files.elementAt(fnum);
     tempJSPTreeNodeImpl=new JSPTreeNodeImpl((String) files.elementAt(fnum));
     tempJSPTreeNodeImpl.setLabel((String) files.elementAt(fnum));
     //tempJSPTreeNodeImpl.addProperty("fileName","Amit");
     //tempJSPTreeNodeImpl.setContextRelative(true);
     //tempJSPTreeNodeImpl.setId(sss+"\\"+s);
     tempJSPTreeNodeImpl.setId(sss);
     //tempJSPTreeNodeImpl.setHref("");
     System.out.println("******************************"+tempJSPTreeNodeImpl);
     tree.addChildToParent(curDir,tempJSPTreeNodeImpl);
     curDir.addProperty("tempJSPTreeNodeImpl","files");
// curDir.addProperty(new JSPTreeNodeImpl((String) files.elementAt(fnum)));
return curDir;
private TreeStructureModel buildTree() {
TreeStructureModel tree = new TreeModel();
//TODO
     try {
          File dir=new File(sss);
          //TestFactory.recursivelyDeleteDirectory(new File("D:\\com"));
          JSPTreeNodeImpl jspTreeNodeImpl = new JSPTreeNodeImpl("Applicare","Applicare");
          tree.setRoot(jspTreeNodeImpl);
          //tree.addChildToRoot(new TreeModel(addNodes(null, dir)));
          tree.addChildToRoot(addNodes(tree,jspTreeNodeImpl, dir));
          System.out.println(dir);
          //a_tree.setRoot(new JSPTreeNodeImpl("Applicare","Applicare"));
          //a_tree=tree;
     //a_tree.addChildToRoot(tree);
          } catch (Exception e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
return tree;
public TreeStateModel getTreeStates(String p_name) throws TreeFactoryException {
DefaultTreeStateModel defaultTreeStateModel = new DefaultTreeStateModel();
defaultTreeStateModel.addOpened(new JSPTreeNodeImpl("1").hashCode());
defaultTreeStateModel.addOpened(new JSPTreeNodeImpl("4").hashCode());
defaultTreeStateModel.addOpened(new JSPTreeNodeImpl("5").hashCode());
return defaultTreeStateModel;