Running exe contained in jar file

Hello,
I have written a java interface where an external executable is being called from one of the classes. I'm using Jgrasp as development environment.
Everything works fine if I run the java program from within Jgrasp: the interface opens up fine and it can run the external program when the button which is supposed to start it is clicked on.
I have then generated a JAR file containing all the classes etc and also the external executable.
When I execute the Jar file, the interface opens up ok and everything works fine within it, but it cannot run the external executable any more.
Is it possible to run an exe file contained in the jar file itself?
I would like to distribute a single jar file containing all the files needed by the application.
Thanks

An EXE can only be executed from Java if it resides somewhere in the file system.
This is obviously the case before you JAR the whole thing, but not after.
Your code will need to extract the EXE by using Class.getResourceAsStream() and
copy it to a temporary location in the file system before executing it.

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Images not getting Loaded while running Java Application through jar file

Hello Friends,
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[email protected]

try out this
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Hello, I've searched a lot and couldn't find an answer to my problem -
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Edited by: Kogan on Nov 3, 2008 6:52 AM

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String []cmd={"c:\\monview.exe"};
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Hello,
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Hope this helps!

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I can run Java App jar-ed into 1 jar file with java -jar App.jar
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java -classpath c:\utils.jar -jar App2.jar
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hi HasanOen
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/////////// first file name: "THIS.txt" /////////
Manifest-Version: 1.0
Created-By: java // whatever here
Main-Class: PUT YOUR MAIN CLASS NAME HERE (like MAIN)
//////////////////// BATCH FILE "RUN.bat" //////////////
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now double click the run.bat file. this will edit yr manifest file.
hope this should work for u
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This is the error i get from exej
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How to run tools from a java archive (jar file)

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In case it's relevant, java -version returns:
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Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-b06-284)
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I thought so too, but it doesn't appear to be the case on my computer. Both /Library/java/extensions and ~/library/java are on DefaultClasspath but CLASSPATH is empty. And even when the directories are specified, the jar file in it is ignored unless I specify that explicitly as well. I do not remember needing to do that in the past. It used to just work when it was in a classpath directory.
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Hi Andrew.
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Determining the name of the jar file running from JAVA

Hi everyone,
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Development Tools -> General Questions:
I am trying to figure out how to put utility classes into JAR files and then compile and run applications against those JAR files using the command-line javac, jar, and java tools. I am using jdk1.7.0_17 on Debian GNU/Linux 6.0.7.
I have posted a simple example with one utility class, one console application class, and a Makefile:
http://holgerdanske.com/users/dpchrist/java/examples/jar-20130520-2134.tar.gz
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2013-05-20 21:39:01 dpchrist@desktop ~/sandbox/java/jar
$ cat src/com/example/util/Hello.java
package com.example.util;
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2013-05-20 21:39:12 dpchrist@desktop ~/sandbox/java/jar
$ cat src/com/example/hello/HelloConsole.java
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public class HelloConsole {
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2013-05-20 21:39:21 dpchrist@desktop ~/sandbox/java/jar
$ make
rm -f hello
find . -name '*.class' -delete
javac src/com/example/util/Hello.java
javac -cp src src/com/example/hello/HelloConsole.java
echo "java -cp src com.example.hello.HelloConsole" > hello
chmod +x hello
2013-05-20 21:39:28 dpchrist@desktop ~/sandbox/java/jar
$ ./hello
hello, world!I believe I am looking for:
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2. Command-line invocation of "javac" to compile the application (HelloConsole.java) against the JAR file?
3. Command-line invocation of "java" to run the application (HelloConsole.class) against the JAR file?
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TIA,
David

I finally figured it out:
1. All name spaces must match -- identifiers, packages, file system, JAR contents, etc..
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My key discovery was that if the code says
import com.example.util.Hello;then the JAR must contain
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http://holgerdanske.com/users/dpchrist/java/examples/jar-20130525-1301.tar.gz
Here is a console session that demonstrates building and running the code two ways:
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2013-05-25 14:02:47 dpchrist@desktop ~/sandbox/java/jar
$ cat apps/com/example/hello/Console.java
package com.example.hello;
import com.example.util.Hello;
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2013-05-25 14:02:55 dpchrist@desktop ~/sandbox/java/jar
$ cat libs/com/example/util/Hello.java
package com.example.util;
public class Hello {
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2013-05-25 14:03:03 dpchrist@desktop ~/sandbox/java/jar
$ make
rm -rf bin ext obj
mkdir obj
cd libs; javac -d ../obj com/example/util/Hello.java
mkdir bin
cd apps; javac -d ../bin -cp ../obj com/example/hello/Console.java
cd bin; java -cp .:../obj com.example.hello.Console
hello, world!
mkdir -p ext/com/example
cd obj; jar cvf ../ext/com/example/util.jar com/example/util/Hello.class
added manifest
adding: com/example/util/Hello.class(in = 566) (out= 357)(deflated 36%)
cd bin; java -cp .:../ext/com/example/util.jar com.example.hello.Console
hello, world!
2013-05-25 14:03:11 dpchrist@desktop ~/sandbox/java/jar
$ tree -I CVS .
|-- Makefile
|-- apps
|   `-- com
|       `-- example
|           `-- hello
|               `-- Console.java
|-- bin
|   `-- com
|       `-- example
|           `-- hello
|               `-- Console.class
|-- ext
|   `-- com
|       `-- example
|           `-- util.jar
|-- libs
|   `-- com
|       `-- example
|           `-- util
|               `-- Hello.java
`-- obj
    `-- com
        `-- example
            `-- util
                `-- Hello.class
19 directories, 6 filesHTH,
David

Problems with CLASSPATH in a executable jar file

Hi there
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The situation is:
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running java -classpath "${CLASSPATH}" -jar cpc.jar doesn't help at all. The java.class.path is still set to cpc.jar when I'm executing the AntLoader class inside cpc.jar.
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Brgds
Jakob

've found the solution to the problem. You have to use the -Xbootclasspath/a parameter when running java.
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Jar file Corrupted

Hi
I created an exe for a jar file using Xenoage.
The exe file executes fine in normal conditions.
I used a license manager for my software.
The input file for the license manager is the exe
file created by Xenoage.
The output file obtained is in an unrecognised format. When
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Invalid or corrupt jar file+
What could be the reason for the jar file to be corrupt.
with Regards
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>
I have auser that gets the following error message when he tries to launch my application through Java web start:
An error occured while launching/running the application.
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>
I have asked to perform the following operations but without any success:
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>
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Hi,
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Unfortunately you have to make some changes in your code.. to find the pictures you need to replace:
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2) Is it possible to make a jar file that contains two jar files both of which have separate main methods?

It makes a great deal of sense to nest jar files. For example, I'm trying to put together a standalone JavaHelp "document". Wouldn't it be great if my customer could double click on a jar file and have a JavaHelp view open up with the documents inside? This requires bundling a JavaHelp jar, a viewer jar, and the document jar containing the docs and helpset. The only thing the customer needs in a JRE. No fuss, no muss, no messy installation.
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I've never heard of anyone wanting to do this before
but:
1. I think the only way to do this will be to use a
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your Outer.jar that launches a custom classloader.
This custom classloader will load your classes and you
can call your runnable classes in Inner1.jar and
Inner2.jar using seperate threads. You need a custom
classloader because if you launch you .jar from (for
example) "D:\myJar\Outer.jar" and specify the
classpath (in the JAR manifest file) to (for example)
"lib/Inner1.jar" it won't look at the JAR file entry
"lib/Inner1.jar" it will look in
"D:\myJar\lib\Inner1.jar". You're going to have
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a bad idea.
2. Yes.

Error JCo starting .jar file

Dear all,
I am new to Java, but I try to implement a small application which talks to our SAP. I am working with eclipse 3.3 and I've installed JCO 2.1.8. I modified Example1 a little bit and everything works fine when I start my program within eclipse with run as->java application. I added the sapjco.jar file to the build path of my project. I also added C:\Programme\sapjco-ntintel-2.1.8 to my windows path variable and copied *.dll to system32. When I export my project as a .jar file and try to start it with
java -cp C:\Programme\sapjco-ntintel-2.1.8\sapjco.jar;. -jar Jco.jar
I get the error message
java.lang.NoClassDefFoundError: com/sap/mw/jco/IMetaData
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<?xml version="1.0" encoding="UTF-8"?>
<classpath>
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But I can start the java program with
java -cp C:\Programme\sapjco-ntintel-2.1.8\sapjco.jar;. Jco
when I am in the directory with the .class file.
Whats wrong with my .jar file?
Thanks in advance,
Rolf
Message was edited by:
        Rolf Winter

Hi,
thanks for your answers.
C:\Programme\sapjco-ntintel-2.1.8 containing sapjco.jar is already added to the path environment variable.
summary:
-I installed JCO in folder C:\Programme\sapjco-ntintel-2.1.8
-I copied *.dll to Windows\system32
-I added C:\Programme\sapjco-ntintel-2.1.8 to the path environment variable
-sapjco.jar is in the building path
-<i>I can start the "normal Java .class file"</i> with java -cp C:\Programme\sapjco-ntintel-2.1.8\sapjco.jar;. Jco
-I've created a jar file with the export dialog. I just followed the steps and selected the starting class "Jco".
-In the directory containing the jar file I tried to start it with the following commands
java -cp C:\Programme\sapjco-ntintel-2.1.8\sapjco.jar;. -jar Jco.jar
java -jar Jco.jar
but I always get the message
Exception in thread "main" java.lang.NoClassDefFoundError: com/sap/mw/jco/IMetaData
Any further ideas?
Rolf

Running exe contained in jar file

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