Making Jar files Run

November 14, 2003

I recently had to reinstall my OS, and more recently had to use a Java Application called JEdit. JEdit's installer didn't create any shortcuts for me, so I had to run JEdit from the command line by invoking it's jar file with java -jar jEdit.jar. Since I had just installed java, it was not part of my system path yet, so I actually had to run something like this C:\j2sdk1.4.2_02\bin\java -jar jEdit.jar, quite a pain but it got me thinking about somethings that could be done by Sun when I installed the JVM that would have made my life a lot easier.

First they could have given me the option to add C:\j2sdk1.4.2_02\bin\ to my system PATH. What java developer want's to update this every time they install in new JDK, along with the JAVA_HOME environment variable that some java apps need (like Ant)?

The second issue: why don't jar files execute when you double click them? This turns out to be a fairly easy workaround for someone who knows what they are doing, you just need to set javaw.exe to execute jar files. That is easy for a software developer, but wouldn't it be easier if the JVM did this for you when it was insatlled? Software developers could just say: download this jar file and double click it to run!

If anyone has contacts at Sun, please feel free to forward my comments to them! I'm not just complaining, I'd like to see Java easier to use and more appealing for desktop apps.

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can't run .jar iles in linux... can anyone help me about this?tnx
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I downloaded and installed java 2 runtime environment and that seemed to fix my problem. if you have trouble finding it, Email me and I'll email you the web address. Also after I installed j2re, all .jar file icon turned into microsoft word icons but still ran.
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can you send me a java compiler in my email?
hai sir, i created one package c:\jdk1.5.0\bin\pack>dir hello.class after i created 1 manifest file md meta-inf cd meta-inf c:\jdk1.5.0\bin\pack\> mainfest-version: 1.0 main-class: hello after i xtract and then , i run it, failed to load manifest class, but jar format the file is created. plz help me,
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Hi, any one can send why we are moving to GenericServlet to HttpServlet any reason??? So many mems saying tht GenericServlet is Protocol independent tht means Http protocol is also there in GenericServlet na .Then why we want to go to HttpServlet. and wht is the difference between GenericServlet and HttpServlet...Send me a mai to: Thanks in advance Srikanth.P
i want to know ,how i run .jar file in linux,by just double clicking.
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Exception in thread "AWT-EventQueue-1" java.lang.ExceptionInInitializerError at$ComTask.execute(Win32ShellFolder2.jav a:1214) at ava:557) at .java:211) at<init>( at at ava:187) at at javax.swing.filechooser.FileSystemView.getRoots( 63) at javax.swing.plaf.metal.MetalFileChooserUI.updateUseShellFolder(MetalF at javax.swing.plaf.metal.MetalFileChooserUI.installComponents(MetalFile at javax.swing.plaf.basic.BasicFileChooserUI.installUI(BasicFileChooserU at javax.swing.plaf.metal.MetalFileChooserUI.installUI(MetalFileChooserU at javax.swing.JComponent.setUI( at javax.swing.JFileChooser.updateUI( at javax.swing.JFileChooser.setup( at javax.swing.JFileChooser.<init>( at javax.swing.JFileChooser.<init>( at ltry.actionPerformed( at javax.swing.AbstractButton.fireActionPerformed( 95) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.jav a:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel .java:387) at javax.swing.DefaultButtonModel.setPressed( ) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonL at java.awt.Component.processMouseEvent( at javax.swing.JComponent.processMouseEvent( at java.awt.Component.processEvent( at java.awt.Container.processEvent( at java.awt.Component.dispatchEventImpl( at java.awt.Container.dispatchEventImpl( at java.awt.Component.dispatchEvent( at java.awt.LightweightDispatcher.retargetMouseEvent( ) at java.awt.LightweightDispatcher.processMouseEvent( at java.awt.LightweightDispatcher.dispatchEvent( at java.awt.Container.dispatchEventImpl( at java.awt.Component.dispatchEvent( at java.awt.EventQueue.dispatchEvent( at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread. java:183) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre at java.awt.EventDispatchThread.pumpEvents( at java.awt.EventDispatchThread.pumpEvents( at Caused by: access denied (java.lang.Runtim ePermission shutdownHooks) at at 546) at java.lang.SecurityManager.checkPermission( at java.lang.Runtime.addShutdownHook( at$ComTaskExecutor.<init>(Win32ShellFold at$ComTaskExecutor.<clinit>(Win32ShellFo ... 42 more
How can i execute the jar files....??
I am not able to run a .jar file. I think there is something wrong with the environment variable. can anyone tell me what do i have give in the environment variables.
Download jar file opener software free! Download information: username: stevebasu password: 111 download link: Jar Opener by install this software & run your java file in double click. 100% working. for all java visit
I am unable to handle jar files in net beans please even helpout me to how to handle jar file
Failed to load main-class Manifest attribute from XYZ.jar file
Running a JAR by double-clicking it or using a simple command is always more convenient than having to include it in your classpath and running a specific main class. To help you do this, the JAR specification provides a Main-Class attribute for the JAR's manifest file.
hoe to create a icon for jar files in netbeans
I have created the jar file of my project in netbeans. I have also set the main class even though I get some error. like C:\>java -jar "The_Law__Ketan__18-6.jar" Exception in thread "main" java.lang.NoClassDefFoundError: org/jdesktop/layout/G roupLayout$Group Caused by: java.lang.ClassNotFoundException: org.jdesktop.layout.GroupLayout$Gro up at$ Source) at Method) at Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClassInternal(Unknown Source) please give me solution
can't download internet exp 7 - need for numerous this - says temp,jar file, etc.
hi all, i built jar of my project. its working fine in windows but giving error - Null Peer?! Exception in Linux. Please enlighten me on what's going on and possible workarounds. thanks in advance!
i am using Linux then how to see the source jar file very very urgent
Dear Sir, Please help me to execute a jar file for running my java file and how I create a .exe file.
shaheen...exe is not happens in java...but yup you can run your java file by executing jar files
I tried loading pc game from net and couldnt run it after loading as it stated that the lang is missing.
Dear friends, you can notonly Run Jar files, but also sis files on pc.

to know how, enail me on:
I've many *.jar applications, but i'm unable to run these on my computer. If anyone knows to run java mobile games on computer, plese help me.
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i run a jar file by clicking it..tell me how to run..It shows an error that "Failed to load Main-class manifest attribute" .
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how i run a jar file in windows 7
Go to where the Java folder is located and in the java ver you want to use remember that location...Next open Notepad type in notepad the following:

java.exe -jar %1 %

Tell NOTEPAD to save as - tell it in the save as type All Files(*.*) and in the file name area name it Javawindows.bat
REMEMBER that file location you were told to remember... save it there.
Now goto the folder where you have the jar file you want to run highlight it and right click and choose open with - tell it to open with the bat file you just made... you will have to browse to it click ok. and your ready to double click on any jar file in windows and have it open.
My problem are i am create java .jar file by help net-beans foe dist folder but i have double click in these jar file they will open as compress folder. So please give any suggestion how to create java executable file
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load-main class manifest attribute.
Sir tell me this project is It complete or not ?.
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i have tried to run *.jar (game files) files with jdk1.4 but it always gives an error i.e. ("main class not found"); now HOW COULD I ENCOUNTER THIS PROBLEM, any help will be greatly apperiterited on my mail. thanks. ...
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plz hep me..
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I have a jar file which runs in java enabled mobile. but I want to make it .exe file for security. could any help me?
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Creating running jar file>>>>
iam giving here an example
.after u creating jar file by using
jar -cfm name.jar main.class
Here name.jar is the name of jar file
Main.class is the name of the main class
After created u open by right clicking in winrar or other and change the content of
.edit in new line
Here name is the name of main class
Then save and try to re open it by double click..
Voila u hav created
I decompiled a jar made some chnages and then again recompiled using jar cmf MANIFEST.MF MYNAME.JAR *.CLASS. BUT WHEN I AM TRYING TO RUN THE JAR BY USING JAVA -JAR MYJARNAME.JAR
java -jar QCentral.jar
Exception in thread "main" java.lang.NoClassDefFoundError:
hello im having a problem with running the " mysql-connector-java-5.0.8-bin.jar " archive file so what could i do?
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I had got an error in my weka jar file installation that denotes that main class manifest is not installed.i'm unable to recover that please send some suggestions and give a suggestion that how to install and set the classpath for the weka jar files.Thanks in advancce.
I made a form in netbeans 6.9.1 after makin it i converted that form into jar file using clean & built method after creating i double clicked on tht jar file but was nt able to execute i also tried using command prompt but was nt at able to work and yes i also tried converting that file into exe but still it dint worked what i shud do now?
Hello everyone,

can someone help me, where to get the JAR software for X201 nokia mobile, word, and PDF file are not accessable, what i wan is to change it JAR, but i need the software to installation.

Thank you,by advance,
Hey, I still got an error even through this process..
C:\Program Files (x86)\\KEmulator>java -cp KEmulator.jar emulato
Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Program Files (x86
)\\KEmulator\swt-win32-3346.dll: Can't load IA 32-bit .dll on a
AMD 64-bit platform
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary1(Unknown Source)
at java.lang.ClassLoader.loadLibrary0(Unknown Source)
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at emulator.k.a(Unknown Source)
at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
at org.eclipse.swt.internal.C.<clinit>(Unknown Source)
at org.eclipse.swt.widgets.Display.<clinit>(Unknown Source)
at emulator.ui.swt.aK.<init>(Unknown Source)
at emulator.Emulator.main(Unknown Source)
I tried to run KEmulator in manny ways, but still can't spot the error.. Please e-mail me asap... :)

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