Setting Classpath so one jar can access another jar

I am having trouble with running an application as a jar that accesses other custom libraries.
I have made a small example to try to get this working.
I have
     HelloWorld.class - that prints out "HelloWorld" and then throws a custom exception JWIException
     JWIException - exception that is in a package com.jeffersonwells.util
I have put the JWIException class in the directory D:\apps\jbin\com\jeffersonwells\util.
I have a manifest file that looks like the following.
     Manifest-Version: 1.0
     Main-Class: HelloWorld
     Class-Path: "d:\apps\jbin\"
I have created a jar with the manifest file and the HelloWorld class
When I run the jar, I get the following
     Exception in thread "main" java.lang.NoClassDefFoundError: com/jeffersonwells/util/JWIException
So, I believe the classpath is not being set correctly.
Then the second part would be to get the HelloWorld app to access the JWIException in another jar file instead of in the directory structure. I assume if the first scenario gets working, this will be fixed as well.
I would greatly appreciate any assistance you can provide.
Thanks,
Tom Krueger

I thank you all very much. The problem I was having was with not having relative paths in my Class-Path.
Having the relative paths will work for the most part, however, sometimes we may want to move the executable jar to a different location. Does anyone have a great solution taking the following into consideration.
Previous posts have said you can reference classpaths through http or ftp. Great, however if you set this to your http://domain/whatever I'm assuming this will prohibit you from moving the application from dev to test to production without modifying the url.
Thanks for any thoughts!!
P.S.
I'm also in a battle here whether to jar libraries or not. jaring allows you to easily move them from server to server and more importantly for me determine versions of compatible files. However, the argument against jaring is speed of development, why jar if I can pull up a java file compile it and copy it to the server. Why waste time in the whole jaring process.
Thanks again!!!

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Hello,
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* To change this template, choose Tools | Templates
* and open the template in the editor.
* AmplifierDesignGUI.java
* Created on Jun 20, 2010, 1:18:52 PM
package AmplifierDesign;
import java.util.logging.Level;
import java.util.logging.Logger;
* @author Bugz
public class AmplifierDesignGUI extends javax.swing.JFrame {
/** Creates new form AmplifierDesignGUI */
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// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jSplitPane1 = new javax.swing.JSplitPane();
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jMenu1 = new javax.swing.JMenu();
jMenu2 = new javax.swing.JMenu();
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jMenuBar1.add(jMenu1);
jMenu2.setText("Edit");
jMenuBar1.add(jMenu2);
setJMenuBar(jMenuBar1);
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layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
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private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JSplitPane jSplitPane1;
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So once this was done I wanted to link the JTree to a mysql database. So I found a sample .java file on the net:
* To change this template, choose Tools | Templates
* and open the template in the editor.
package AmplifierDesign;
import java.awt.*;
import java.sql.*;
import java.util.*;
import javax.swing.*;
import javax.swing.tree.*;
public class JTreeStructure extends JFrame {
Connection con = null;
Statement st = null;
ResultSet rs = null;
//public static void main(String args[]) throws Exception {
// new JTreeStructure();
public JTreeStructure() throws Exception {
super("Retrieving data from database ");
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String db = "icons";
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list.add("Laser Objects");
Class.forName(driver);
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st = con.createStatement();
rs = st.executeQuery(sql);
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Object value[] = {"Fiber Components",rs.getString(2) };
list.add(value);
} catch (Exception e) {
System.out.println(e);
rs.close();
st.close();
con.close();
Object hierarchy[] = list.toArray();
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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content.add(new JScrollPane(tree), BorderLayout.CENTER);
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setLocation(300, 100);
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DefaultMutableTreeNode child;
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Object nodeSpecifier = hierarchy;
if (nodeSpecifier instanceof Object[]) // Ie node with children
child = processHierarchy((Object[]) nodeSpecifier);
} else {
child = new DefaultMutableTreeNode(nodeSpecifier); // Ie Leaf
node.add(child);
return (node);
The problem is when I run my program two windows open up. The original one with JTree1, and the panel and horizontal splitplane and another window with a new tree component that did get its objects from the database. My question is how do I "replace" the JTree1 with the new tree created from the second java file?
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zmoddynamics wrote:
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