I'm getting my java project to a finish and I'm about to export it to an easy useable program on the desktop.
In my program I'm using .txt files to keep all my data, so I've made a folder for my databases and my images.
The problem comes when I'm exporting the project to the desktop and it looks like everything mashes up and becomes one big pile of files instead of a folder structure I made it like in eclipse.
From eclipse
What is the right way to export the project, and how does I keep my filestructure?
Exporting to JAR file at the moment.
EDIT:
I'm also getting this error when I try to follow exampels from the internet.
'Utforsking/src/org/eclipse/wb/swing/FocusTraversalOnArray.java'
You can choose export->General->File System.
Then choose "Create directory structure for files" and that should work. I am using Luna.
If you hit problems, let me know.
Related
I have to work with a bunch of small applets that were sent to me in a folder, all of them are .java files. In order to see which part of the code is responsible for a particular outcome I want to open it in eclipse and run it there too. How can I do this?
I have tried copying the code into a new eclipse window, but it could not run it.
.java files are pure text files, create java project in eclipse and copy the files there.
So my problem is that I want to export my libgdx desktop project as a runnable .jar file. I already made this work and it is working fine when I open the .jar file from my desktop. However, if I put the .jar file into my Dropbox or in any other directory other than my Desktop, it won't work anymore. The Gameframe opens for like 0.2sec, stays black and closes again immediatly. If I then pull the .jar back to my Desktop it works fine.
I've seen other people ask this before, but none of the answers helped me with my problem.
If you need any more info please let me know!
Try opening the exported JAR in (for example) 7-zip and then adding the 'res' folder manualy. I don't really understand, why Eclipse didn't put the 'res' folder in it. But adding it manualy worked for me.
In eclipse, make sure to right-click the whole project and click export. In library handling, click on "Package required libraries into generated JAR". Then click finish. If that does not work, make sure your build path includes everything.
Can I have access to the .jar file so I can look what is missing inside it?
Most likely you got some additional libraries in your output directory which are missing when you place your jar in dropbox. To confirm this try to start your application via command line. Java will then print a stacktrace with the exception. Example:
java -jar yourjarinthisdirectory.jar
As a side note I would recommend to use maven in the future maven libgdx. In this case you just can say "package" and maven produces complete jar with all libs inside it without further configuration.
I am a Beginner in Java GUI and am using Netbeans 7.3 to use Swing Components, the problem is that all was working fine, but one day when I Clicked Clean & Build and tested the JAR file, it was not executing, I ran it in the Netbeans and It is working fine.
Then I thought that it would be a problem of Build Properties so I compared build properties from a project which was working fine with Jar file but I cannot find any difference, The problem is that when I double-click the JAR file, no Error is shown, I tried many ways like executing it from cmd but It did'nt worked.
Can anyone help me out What could be missing, and one thing more that is I even tried to build my project on another computer through Netbeans but no use.
Try to open your .jar with winrar, and check if the classes are being added to the .jar, If they are not being added probably is a bug from netbeans, I would advise to install netbeans 7.2, and then open your project again, and then regenerate the Jar File. I was having a similar problem with Netbeans 7.3
I think you executing .jar file from different folder - not from where it was created? If so - that means your application can not find some files - pictures, etc. So if you have some files which application uses - create the folder named "lib" and place there your files - but not .jar file. For example:
File file = new File("/images/etc.png");
means that it is placed in lib/images directory. So your .jar file could be run from here:
C:/myTestApplications/myApp.jar
which contains also folder
C:/myTestApplications/lib/images
Try that.
I made a small application using Java Swings and then created a jar file of the project using 'clean and build' option in Netbeans. Then, I converted that .jar file in a .exe file using the software 'Launch4j' and it was perfectly running on my laptop. However when I tried running that exe file on other laptop. It displayed the error: Class NewJframe.firstfile couldnot be found.
( I made the database on the other laptop also with MySql Connection).
Please help me clarify why I am getting this error.
Also, I would like to know what all are the requirements to run an .exe file on other computer which I made from a .jar file?
I would pretty much expect something like Launch4j to take care of all your packaging requirements; did it give you options to "include all dependencies" that you didn't click "YES" to...?
It sounds like it's packaged your app, but possibly not the Java runtime envt it needs to run your app.
Try giving him the JAR file and see if he can run that. If he can, It's a problem with Launch4j, if he can't it's a problem with Java.
Alternatively try something like Excelsior JET instead.
Class NewJframe.firstfile couldnot be found
Launch4J only bundles your application's main JAR file inside the .exe (or not even that if you select "don't wrap JAR") - any other JARs that the main one depends on must be present in the same relative locations, you can't necessarily copy just the .exe.
I just heard of library for reading/writing excel files without COM, so I figured I'd go check it out.
I downloaded jexcelapi_2_6_12.zip from this page http://sourceforge.net/projects/jexcelapi/files/ but I have no idea how to open it in Eclipse.
I know it's a silly question, but I'm sure it's not the first time someone's asked it, how do I open this in Eclipse in Windows, compile, run and debug it?
Primarily what you need from that zip is the jar which contains the library. You'll still need to actually write a Java app that uses it.
So what you need to do is:
Unzip the file you downloaded
create a new java project
add a lib directory to the project
copy jxl.jar from the zip into your projects lib directory
right click on the jar in eclipse and select "Build Path>Add to build path"
The classes in the library are now available to your project
Next create a new java file in your projects source folder and start coding.
Extract the zip file somewhere, put the jar file in your project's directory somewhere (e.g. under a lib directory) and then right-click on it and select "Add to build path" or something similar.
It's not runnable on its own though - you'll need to write some code in order to debug.
If you want to debug into the source code of the library itself, you'll need to tell Eclipse where the source is - but that's unlikely to be necessary.