Accessing a Derby database inside of a Jar file...

Hello,
I've browsed many threads that touch on aspects of this topic, but I still can't seem to figure this out. Here is my dilemma:
[1] I have a simple application that stores some data using JavaDB.
[2] Everything works fine when I bundle the app into a jar, as long as I leave my Database folder outside the jar
[3] If I include the DB in the jar the app does not see it.
[4] I can't just leave the folder outside the jar because I eventually plan on deploying the app as a Web Start program.
The Dev guide on JavaDB says +"A database can be in one of many locations: in the current working directory, on the classpath, in a JAR file..."+, and this apparently can be set using the derby.system.home property. I currently use the following to set this property: System.setProperty("derby.system.home", ".myDatabase"); How would I need to change this to allow the app to find the database inside the jar? If this requires the DB to be read-only (which is fine with me), what properties need to be set to designate the DB as such?
Any input would be greatly appreciated.

Well, upon rereading the Derby Developer's Guide I found the information I sought in the section "Creating Derby databases for read-only use" (p.34-37). I'm still not 100% sure about how to do the Web Start implementation, but this should put me on the right track.
[UPDATE IN CASE ANYONE STUMBLES UPON THIS THREAD] It seems that the issue with Web Start is that the database needs to be access a writable location for the temporary directory, so I presume web start would have to request disc-access privileges... something I'm trying to avoid.
Edited by: CommanderSalamander on Nov 9, 2007 10:06 AM

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Including a jar file inside an executable jar file

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Russ_Bjork wrote:
Is it possible to include a jar file inside another (executable) jar file such that the included file is part of the class path for the outer file?No. Actually, I suppose it would be possible if you do all the 'heavy lifting', but Java is not designed to handle Jars within Jars.
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Is your app. a rich client (e.g. Swing, AWT, SWT..)?
Can you distribute the app. from a server or the internet?

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I know that this must have a simple answer but I haven't been able to find one in the tutorials.
Any help would be apreciated.

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thx a lot
dialsc

hi all,
the xml file is in the jar file and
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greez
dialsc

Connecting to a database inside a JAR?

Hi,
Can I do the following:
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the path contains invalid characters such %20% instead of and?
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String str1=url2.toString().substring(10);
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Jar Files in a Jar File - Classpath Error

Hi,
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E H

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Images in Jar files

Hi,
I am creating a recipe book application. Everything is exactly how I want to so I am trying to make a jar file with it.
On the first screen that loads there is one image, when I make the jar file it doesn't seem to be able to find the image once I am outside of eclipse and running the jar.
I have created a folder in called resources in my scr folder (src/resources) this is where I am storing the image.
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package recipe1_5;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.io.*;
import javax.imageio.*;
import java.awt.image.*;
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}//END class ChooseWindowI have tryed this two different ways. The first how it is. And the second with something like this:
ImageIcon ii = new ImageIcon(getClass().getResource("resources/RecipeMagic1_5"));Any insight on how to get the image from inside of the jar file would be great
Forgot to add, it either throws a NullPointerException or a FileNotFoundException in the catch clause of addPic()
Edited by: tyelford on Dec 15, 2010 11:46 AM

Ok, so it works good on Mac, but if I try to use it on Windows it will not load the image,
Here is the code that works on Mac but not windows:
private void addPic(){
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                    imgLocal = "resources\\RecipeMagic1_5\\RecipeMagic1_5.gif";
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How do I import classes in a jar file?

I have the following directory structure, each directory is a seperate package of the same name as the directory
RPGUniversal
RPGMap
RPGCharacter
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RPGCharacter and RPGMap both depends on classes inside the RPGUniversal Package, but are independant of eachother and RPGUniversal is completely independant.
I want to place each package in it's own .jar file for use as a library in later programs.
I placed all the compiled classes for RPGUniversal inside the proper directory structure, I then used this command to place it in a jar:
jar -cf ./RPGUniversal.jar ./RPGUniversal/*
I then tested the contents with this command:
exodist@Abydos:/stuff/JProject/test$ jar -tf RPGUniversal.jar
META-INF/
META-INF/MANIFEST.MF
RPGUniversal/ADTs/
RPGUniversal/ADTs/t1.jpg
RPGUniversal/ADTs/t2.jpg
RPGUniversal/ADTs/t3.jpg
RPGUniversal/ADTs/t4.jpg
RPGUniversal/ADTs/Coordinates.class
RPGUniversal/ADTs/RPGImage.class
RPGUniversal/ADTs/FrameSet.class
RPGUniversal/ADTs/ImageTester.class
RPGUniversal/Exceptions/
RPGUniversal/Interfaces/
RPGUniversal/Interfaces/RPGCharacter.class
RPGUniversal/Interfaces/RPGItem.class
RPGUniversal/Interfaces/RPGObject.class
RPGUniversal/Interfaces/Trackable.class
RPGUniversal/Interfaces/Tracker.class
RPGUniversal/Interfaces/RPGMapComponent.class
RPGUniversal/Interfaces/RPGMap.class
so far all good, next I delete the RPGUniversal directory leaving the only file in the current directory RPGUniversal.jar
next I create the RPGMap directory and give it the proper .java files and directory tree.
I then run a script to compile every .java file
for i in `find ./ -name "*.java"`; do javac "$i"; done
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exodist@Abydos:/stuff/JProject/test$ for i in `find ./ -name "*.java"`; do javac "$i"; done
./RPGMap/BaseClasses/StaticMap.java:13: package RPGUniversal.Interfaces does not exist
import RPGUniversal.Interfaces.*;
^
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symbol : class RPGMap
location: class RPGMap.BaseClasses.StaticMap
public abstract class StaticMap implements RPGMap
^
./RPGMap/ComponentClasses/MapTile.java:9: package RPGUniversal.Interfaces does not exist
import RPGUniversal.Interfaces.*;
^
./RPGMap/ComponentClasses/MapTile.java:10: package RPGUniversal.ADTs does not exist
import RPGUniversal.ADTs.*;
^
./RPGMap/ComponentClasses/MapTile.java:16: cannot resolve symbol
symbol : class RPGObject
location: class RPGMap.ComponentClasses.MapTile
public class MapTile implements RPGObject
^
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symbol : class RPGImage
location: class RPGMap.ComponentClasses.MapTile
private RPGImage MyImage;
^
./RPGMap/ComponentClasses/MapTile.java:31: cannot resolve symbol
symbol : class Coordinates
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....the list goes on........
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here is a directory tree so you can see how it is set up:
ls -R1
RPGMap/
RPGUniversal.jar
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ComponentClasses/
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./RPGMap/BaseClasses:
StaticMap.java
./RPGMap/ComponentClasses:
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MapTile.java
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The JAR file needs to be in the compliers classpath : javac -classpath "$CLASSPATH:RPGUniversal.jar" "$i"

EJB 3.0: deployment/jar file generation issue

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We tried to generate a separated jar file for the ejb project alone with the same results.
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Could anyone help us?
Thanks in advance.
Best Regards,
Gustavo
PS: Sorry for my English. :)

Hi Shay! I follow what you said and it worked. However, we had to manually edit MANIFEST file for the EJB jar in order to add classpath clause to map our util jar. IMHO, JDev should do it for us. Anyway, we were able to deploy the app successfully.
Best Regards,
Gustavo

How to get InputStream in jar file

Could anyone give me a tip how I can play this sound file inside the application jar file?
I have this package: *{color:#0000ff}com.sikgraf.ui{color}*
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Thanks for your reply, I just figured out using URL:
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                        format.getSampleSizeInBits() * 2,
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any Browsable Component will not access the Filestructure of a Zipfile
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Step 1
Write a Component which can Access Zip Files
Step 2
Build up a Component wich parse the htmlFile and replaces the Image links with an url of a Servlet like <a href = "\pics\Foo.jpg"> to Step3
write a Servlet wich is Named ResourceServlet wich will send the HTML File if no Parameter is given
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Hi,
I want to access my help system from within a jar file using the jar protocol. The issue is that I don't want to enter a fixed path to my jar file. I want something relative like this -
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An not something fixed like this -
URL hsURL = HelpSet.findHelpSet(null, "jar:file://c:\myfolder\myjarfile.jar!/myfile.hs);
Any workarounds? Great, Thanks.

Hallo,
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I have some dependent 3rd party jar files that needs to go with the extension. How can I package it with the extension?

DJ,
If you're still using 11.1.1.5 (or any version of 11gR1) place the third party libraries into a directory in your project, and reference them via the classpath entry in the extension.xml file.
If you are looking at how you can distribute them with your extension, but not put them inside the extensions .jar file, then put them read this blog post about how to bundle your extension for distribution.
http://blogs.oracle.com/jdevextensions/entry/working_with_jdeveloper_update_centers_and_bundlexml
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Accessing a Derby database inside of a Jar file...

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