Compile target 1.6 = JAR not executable anymore (double click)

I made my JAR executable by adding "Main-Class:" and "Class-Path:" entries into the manifest file. This works great with Java 1.5 compiled code. But simple switching the compile target from "1.5" to "1.6", the generated JAR is not executable anymore and shows an error dialog instead:
Java Virtual Machine Launcher
Could not find the main class. Programm will exit.
I create the JAR with an ANT script. Just toggling between target "1.5" and "1.6" forth and back results in an executable JAR (for target "1.5") or this error (for target "1.6").
Strange: it works when I call the JAR from command line (java -jar myJar.jar), so the error above only occurs when double clicking. (Running on Windows 2000, JDK 1.6.0_03)
I haven't found any notes about changes in the manifest file for target 1.6 compiled classes.

PraveenKJain wrote:
I have created a executable jar file of an swing desktop application, It is working fine if i use the command line (java -jar option) but when i try to execute it by double clicking its shows the error message (could not find the main class. program will exit).If this is a Windows icon, then I suspect the "Start in:" directory is wrong. Mind you, judging by the classpath, it doesn't look like whatever tool created your executable jar did a very good job.
Winston

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How to make .jar files executable by double clicking

hi,
I've been trying to make my .jar file created via ANT Tool executable by double clicking it but I'm not being successfull. I looked at the ANT Tool for making manifest.mf and I included most of the attributes listed there and later found that Main-Class attribute is required but its not mentioned in the documentation.
So, I'll be very greatful to receive any suggestions
regards,
Jay

ya I've been doing things the same way mentioned there but it isn't working. here is the code for it:
//All the .class files are in the build directory and the class files are under the package org.home.proj.

<target name="jar" depends="compile" description="Makes CyberStation.jar from the CyberStation code.">
    <mkdir dir="${bin}" />
    <jar jarfile="${bin}/CyberStation.jar" basedir="${build}">
      <exclude name="**/run.bat" />
        <manifest>
       <attribute name="Buily-By" value="${user.name}" />
       <attribute name="Main-Class" value="org.home.proj.CyberSoft" />
         <section name="org/home/proj/CyberSoft.class">
           <attribute name="Sealed" value="false" />
         </section>
     </manifest>
    </jar>
</target>It show the error: Could not find the main class. The program will exit.
regards,
Jay

Jar file not executing on double-click

Hello,
I have a .jar file that I would really like to execute using a double-click in win xp.
I can execute the jar file witha java -jar command on the command prompt and the program runs but when double-clicking i get the error: cannot find the main class: program will exit
I had win rar installed on my computer which changed itself to the default app to open jar files.
So this is what I've tried
I tried modifying the registry command to run java -jar, javaw -jar but they don't work.
I have created several manifest.mf files with this in them
Manifest-Version: 1.0
Created-By: 1.4.2_07 (Sun Microsystems Inc.)
Main-Class: MyClass
I know that a carraige return needs to be at the end though I don't know really how to check for it (I assume its there because I have a few extra lines after the last text peice). I've read through some other threads but nothing seems to work. It's getting really annoying always having to go through the runline. Thanks for the help.

I don't understand why Netbeans has such a hard time creating working jar's for applications. This is the second time I've written an application that just will not work when trying to execute using the jar. The last time this happened I used Eclipse and imported everything (including the layout) and Eclipse got it working the first time.
This time, I thought I'd go back to Netbeans since they released a newer version 4.0 (I haven't gone to 4.1 yet). Apparently nothing has changed as my application, once again will not run from the jar. What's the deal with Netbeans?
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JAR suddenly not working on double click...

I have a program that I have been working on for the past few months. I want to run it from the desktop in the form of a .jar file. I use netbeans to create the jar file. In previous versions, this has worked very well. With the most recent build, I have problems running it when clicking on it.
When the .jar is within the project's folder it is possible to run by double clicking. When I take that same file and move it anywhere else, for example, the desktop, it will not run on double click. It forms a javaw.exe process and hangs. I can run the newly moved jar from the command line with "java -jar 'path'", but not with the double click I want. I have tried this on several computers using the same version of Java..
This really puzzles me cause it has worked as intended for a few months now, but not anymore.. If anyone has any suggestions of why this might be happening, it would be very much appreciated as I really need this thing to run like I hoped it would
Thanks!

no, there is a bug in your code that is causing this strange behavior. What people here are suggesting is that this bug is probably causing an exception, but you are not handling this exception correctly, probably catching it but never doing even a printStackTrace(). This causes the application to fail without you knowing why.
My suggestion is to run the code from an IDE so you can step through it in debug mode, and see where it is going wrong.

Jar file runs from the command line, but not when I double click it

Hello, I'm running windows xp. I've created an executable jar file and it runs fine from the command line when I type;
java -jar wizard.jar
but, when I double click it . . . nothing.
Any ideas?

nothing ? that's weird, windows XP should prompt you to select the program you want to use in order to open Jar files (and give you this silly piece of advice to search the web for the appropriate program)
you might want to check what program (if any) got associated with .jar extensions :
in Windows Explorer : Tools => Folder Options => File Types
hth

HT1222 My mouse pointer in finder is not working by double clicking on the application.I have to double click and select open for opening the application.Can you suggest me some settings to fix this problem?

My mouse pointer in finder is not working by double clicking on the application.I have to double click and select open for opening the application.Can you suggest me some settings to fix this problem?

Hi,
Try this ... reboot your Mac and see if double clicking works again.
Also, you can just select the Application you like to open and hold down the Command+O to open.
Also, did you check your setting for the mouse in system preferences.
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Photos in my iPhoto library will not enlarge when double clicked on. they fill the screen and then screen goes black. hasn't happened before. thanks--

photos in my iPhoto library will not enlarge when double clicked on. they fill the screen for a second (or less) and then screen goes black. hasn't happened before. thanks--

There are several possible causes for the Black Screen issue
1. Permissions in the Library: Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Include the option to check and repair permissions.
2. Minor Database corruption: Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild.
3. A Damaged Photo: Select one of the affected photos in the iPhoto Window and right click on it. From the resulting menu select 'Show File (or 'Show Original File' if that's available). (On iPhoto 11 this option is under the File -> Reveal in Finder.) Will the file open in Preview? If not then the file is damaged. Time to restore from your back up.
4. A corrupted iPhoto Cache: Trash the com.apple.iPhoto folder from HD/Users/Your Name/ Library/ Caches...
5. A corrupted preference file: Trash the com.apple.iPhoto.plist file from the HD/Users/ Your Name / library / preferences folder. (Remember you'll need to reset your User options afterwards. These include minor settings like the window colour and so on. Note: If you've moved your library you'll need to point iPhoto at it again.)
If none of these help: As a Test:
Hold down the option (or alt) key key and launch iPhoto. From the resulting menu select 'Create Library'
Import a few pics into this new, blank library. Is the Problem repeated there?

Events will not open with double click/double click not working.

Have just upgraded to iPhoto'11 and finding it a pain to use after previous iPhoto. Events will not open with double click (even though highlighted in yellow) and photos will not open with double click or videos play. How can we fix this please?

That sounds very like an issue with your mouse/trackpad and not iPhoto. Go to your SystemPreferences and chck the speed you've set for double clicking
Regards
TD

"Check Names: Microsoft Outlook does not recognize '1. double click the attachment'" submit error

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We are having the same issue of trying to send a Shared Review from Adobe Pro XI and getting a error. We are currently using Outlook 2010. Hope someone from Adobe support can answer this issue and other Shared Review issues that are related in nature.

Class not found, Jar not executing

Hello,
I created a JAR file and cannot execute it by running java -jar myjarfile.jar. I get no error message and it does not execute.
If I extract the JAR, and run my main class with java packagename.myclass it works fine
If I run javaw myjarfile.jar it tells me it cannot find the main class
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xarfox wrote:
Ok, in that case - is this behavior acceptable:
The first thing I do is:
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From that point forward I have all the info I need. Can I do this inside a JAR?
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Thank you!If I understand correctly, the file CustomConfig.xml is inside the jar. You do not need user.dir because getClass().getResourceAsStream() will look inside the jar, assuming the object you use was loaded from the jar. If I remember correctly, if your class is in a named package, you need to start the file path string with a / character - ...getResource("/CustomConfig.xml").
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Please help suggestions for solving built-only compiler error: 'The VI is not executable. The full development version of LabView is required tofix this error.'

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Photoshop CS2 will not open to double click in Snow Lepard

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Compile target 1.6 = JAR not executable anymore (double click)

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