NetBeans 5.5 + jar library -> can't compile prj

You need to read a couple tutorials on JAR files to get a better understanding of what they are and what is capable with JAR files.

First of all, your MySQL JDBC JAR file will not be found if you package it WITHIN your application JAR file. Jar files should never be packaged within other JAR files.

Your application will need to be seperate from the MySQL connector JAR file, and when running Java you will need to point the MySQL jar file to your classpath argument so that it can be found.

Another misconception you have is that by simply placing the MySQL jar file within a folder called, 'lib' that everything will simply, "work". While that is good practice it is simply not the case.

Secondly, your JAR file is supposed to contain a file called MANIFEST.MF which is a simple text file that specifies properties of the JAR file. You need to add the following line to your JAR file for it to be able to find your Main class.

Main-Class: com.db.package.WhateverObject

As for not being able to find icons, I am simply not getting what you are saying.

maple_shafta at 2007-7-10 11:56:42 >

1. The lib folder is relative to your application JAR, or at least it should be. If it can't find a lib folder in the same directory as your JAR file then your third-party jar files will not be found by the application and you will get a NoClassDefFoundError.

4. The image files that supply your button icons must ALWAYS be placed in your JAR relative to the class that is using them. If not then your application will not be able to find them.

3. I am not sure what you mean about a BAT file and updating the PATH environment variable. I assume you mean the CLASSPATH environment variable. If you specify the external JARs in your MANIFEST.MF file then why do you need to do this in a BAT file?

maple_shafta at 2007-7-10 11:56:42 >

Oh...Stupid thing!!!!

YES!!!! The problem is elsewhere.

I've created folder lib with all necessary additional jar's and it works

I can launch frame.

But I can't launch form created with help of NetBeans 5.5. GUIBuilder.

So I have to dig why I doesn't launch.

Sorry for making troubles.

Your solution is right.

Problem is in my main class which uses form..........((((

Holoda at 2007-7-10 11:56:42 >

Link to russian forum:

http://forum.ixbt.com/topic.cgi?id=40:3047

See error report. Is it close to yours?

java.security.AccessControlException: access denied (java.lang.RuntimePermission loadLibrary.jtwain)

at java.security.AccessControlContext.checkPermission(Unknown Source)

at java.security.AccessController.checkPermission(Unknown Source)

at java.lang.SecurityManager.checkPermission(Unknown Source)

at java.lang.SecurityManager.checkLink(Unknown Source)

at java.lang.Runtime.loadLibrary0(Unknown Source)

at java.lang.System.loadLibrary(Unknown Source)

at jtwain.JTwain.init(JTwain.java:191)

at JTwainMng.<init>(JTwainMng.java:31)

at GUI_ChooseType.init(GUI_ChooseType.java:105)

at sun.applet.AppletPanel.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

So, I will give you explanation in few words:

The thread author

Mystic_hardware successfully runs applet in command line, but can't lauch it through web-page.

This applet uses dll, which is on the server-side.

The other guy suggest to Read Manual and gives an idea, that author has to SUBSCRIBE applet.

Also, see this explanation: (in english)

http://java.sun.com/j2se/1.4.2/docs/guide/deployment/deployment-guide/upgrade-guide/article-04.html

I hope, the last one link will help you.

As I know, applet can't establish connection to other servers. It can interact only with server where applet is placed.

Holoda at 2007-7-10 11:56:42 >