I have created my JAR on Windows 2000 having java version 1.5 which contains following directories/files:
manifest.txt
com
lib
lib contains all JARS which I want to make part of my JAR. com contains my class files and below is manfiest.txt file
Main-Class: com.as.qst.result.ResultTriggerSchedular
Class-Path: lib/axis.jar lib/c3p0-0.9.1.1.jar lib/commons-discovery-0.2.jar lib/commons-logging-1.0.4.jar lib/jaxrpc.jar lib/log4j-1.2.16.jar lib/medplus-hub-8.2-wsclients.jar lib/medplus-hub-13.1-jaxws-clients.jar lib/quartz-2.2.1.jar lib/quartz-jobs-2.2.1.jar lib/saaj.jar lib/slf4j-api-1.6.6.jar lib/slf4j-log4j12-1.6.6.jar lib/ wsdl4j-1.5.1.jar lib/xercesImpl.jar com\as\qst\result
I used following command to generate my JAR
jar cvfm test.jar manifest.txt com lib
It has successfully created a JAR file but when I try to run it with
java -jar test.jar
it does not execute and throws above exception. I used the same process for Windows 7 which has version 1.7 and it did work out even without class files path in manifest.txt com\as\qst\result. Is something more to do with class-path besides defining in manifest? and why is it working in Windows 7?
You do not need the class file path in your class path entry. So instead of adding com\as\qst\result to your class-path.
More over you must not package other jar files in your runnable jar.
Other required jars must be provided in the same folder as your jar file (may be in separate folder) and Add current directory "." (without quotes) to your class-path.
Hope this helps.
EDIT
Just found this Stackoverflow Link. This might give you more insight. Please read through it.
Related
I have a program written in java using Eclipse. For some reason that I won't write here, I decided to move to VS Code. If I run my code in debug mode, all works, but, when I want to export as jar file some errors comes out.
Some information:
- The program is composed by several classes.
- I use 3 external jars included via Eclipse.
- If I run the code with the extension 'Java extension pack - microsoft' all works. Compiling via terminal with
javac MyApp.java
it doesn't compile. (It doesn't find some classes belonging to external jars)
- If I use
jar -cvfm MyApp.jar manifest.txt *.class
where *.class are created by compiling via 'Java extension pack' the error is 'Unable to find or load the main class'
- I'm using a MacBook Pro and the last version of VS Code
What do I do wrong? Which more information you need to help me?
Let's say your project has app package. Under that a App.java class resides which has the main method. Now after building the class files let's assume the class file folder structure is
bin
|app
|App.class
Now go to the bin folder and copy the manifest.txt file in bin folder. manifest.txt file must contain Main-Class . here app.App is the name of the Main-Class.
Main-Class: app.App
Note manifest.txt file must be ended with a new line or carriage return . After Main-Class: app.App put a new line at least.Now run this command from the bin folder
jar cfmv App.jar manifest.txt app/
then test the Jar with
java -jar App.jar
I've got a project that is structured liked so:
root/
-- lib/
---- commons-cli-1.2.jar
-- src/
---- my/package/name/*.java
-- bin/
---- my/package/name/*.class
-- .classpath
-- .project
-- manifest.mf
The *.class files in bin/ are made by Eclipse each build. My .classpath has the lib/ included and compiles just fine; it also runs as a "Java Application" just fine with my current stubs.
The issue comes about when I try to create a JAR and include the lib/ dependencies. From the command line I've been issuing:
jar cvfm prog.jar manifest.mf -C bin/ .
The program builds, and then when I try to run java -jar prog.jar, I get:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/cli/Option... (there is more, but I cant copy from the other machine)
My manifest.mf looks like:
Manifest-Version: 1.0
Main-Class: my.package.Main
Class-Path: ./lib/commons-cli-1.2.jar
Seems to me that the Class-Path isn't being included and the JAR cannot find the classes contained in the commons-cli-1.2.jar. I've isolated this to JAR creation, since I can run the compiled classes with no issue.
What am I doing wrong when creating the JAR and including the lib/*.jar?
I have had issues with specifying classpath in the manifest file before. If I were you, I would skip referencing the required libraries in the manifest file and instead include them directly inside your jar. Eclipse allows you to easily do this link
You probably assume that the build process should pull the commons JAR into the new that holds your classes. Wrong assumption.
The default Java approach is that you only include your classes in your jar. But instruct your users that they need to have the commons jar in their class path as well!
I have a java class which has almost 12 jar file dependencies and i am using ubuntu 12.10 . I need to know how to run this java application because every time i run it , it gives me errors as "symbols not found". I have all jar files in a folder called libs. and i have tried these commands but none of these gives me some succesful result.I have flights.java class in test directory and libs directory is inside test directory.Currently i am in test directory
javac -cp "/home/ubuntu/test/libs/*.jar" flights.java
javac -cp '/home/ubuntu/test/libs/*.jar' flights.java
if you have single class in your app called flights.java and all of your required jar are located at /home/ubuntu/test/libs/ then use this
javac -cp '.:/home/ubuntu/test/libs/*.jar' flights.java
and to run
java -cp '.:/home/ubuntu/test/libs/*.jar' flights
better to just pack dependency and app in to a single jar and make it launchable and runnable jar
12 jars is not a very large number. Why not just append all the jars on the classpath?
Alternatively, you can create another jar and specify all the jars in Class-Path variable in that jar's MANIFEST.MF and then add this single jar to your classpath.
EDIT:
Here is how I would do it. Create a MANIFEST.MF file with content similar to this:
Manifest-Version: 1.0
Archiver-Version: whatever
Created-By: whatever
Built-By: author-name
Build-Jdk: 1.6.0_34
Class-Path: jar1.jar jar2.jar jar3.jar
replace jar1.jar with the actual file names of the jar.
Then you can create a jar with command : jar cvf test.jar -m ./MANIFEST.MF .
Now when you are using it on classpath use it like java -jar xyz.jar class-name
I am trying to convert my java application to an executable jar.
I have been able to package it into a jar with all my class files, but still am not able to include the jmf.jar file.
This is my directory structure,
Main dir
src/ //A dir
--a.java
--b.java
jmf.jar
Manifest.txt
Content of my Manifest.txt file,
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.7.0
Main-Class: src/a
Class-Path: .;jmf.jar //also tried ./jmf.jar
By double clicking the .jar file, I am able to run the main function, but the second function uses the jmf.jar throws exception when I tried running the jar file in debug mode, that javax.media not found. This class is in the jmf.jar file, which makes me conclude the jmf.jar file is not being included in the class path or so. So what am I doing wrong? How do I make this executable file?
The command I used to convert it to jar was,
jar cvfm myJar.jar Manifest.txt src\*.class jmf.jar
The jar files referred to by the Class-Path entry in the manifest must not be inside the jar, but outside of it, as explained in the jar tutorial.
If you are using JMF you’ll need to include jmf.jar and jmf.properties in the same directory as the executable jar
I am trying to run my jar file on a Mac (Haven't yet tried on any other platform). When I run using java -jar MyApp.jar I get the following error
Stacktrace:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/log4j/Logger
at tabalchi.MyLogger.getLogger(MyLogger.java:51)
at tabalchiApp.TabalchiApp.printSystemProps(TabalchiApp.java:117)
at tabalchiApp.TabalchiApp.main(TabalchiApp.java:37)
So, as you can see the main class is recognized.
This is the manifest file.
--->
Manifest-Version: 1.0
Class-Path: . jars/log4j-1.2.16.jar jars/jfugue-4.1.0-20120125.jar jars/gervill.jar jars/AppleJavaExtensions.jar
Main-Class: tabalchiApp.TabalchiApp
SplashScreen-Image: tabalchiApp/resources/splash.png
<---
And the folder structure in the jar file as follows.
--->
META-INF/MANIFEST.MF
jars/AppleJavaExtensions.jar
jars/gervill.jar
jars/jfugue-4.1.0-20120125.jar
jars/log4j-1.2.16.jar
tabalchiApp/TabalchiApp.class <-- this is the main class
tabalchiApp/otherClasses.....class
<---
I have read many posts about running .jar file but none of the solutions have worked for me. I would really appreciate your help on this one.
I am creating the jar file by exporting from eclipse. If I export to a runnable jar file then I cannot control the making of the manifest file. I need to add the splash image in the manifest file. And I am having some other issues with the runnable jar export. Hence this path.
It seems that log4j is missing.it is expecting jars/log4j-1.2.16.jar in class path .
jars/log4j-1.2.16
should be under folder structure.
jars/log4j-1.2.16.jar
In which directory are you trying to use:
java -jar MyApp.jar
You can specify the packages/directories in the classpath to be sure they are found.
Ok, so according to this link,
http://docs.oracle.com/javase/tutorial/deployment/jar/downman.html
The Class-Path header points to classes or JAR files on the local network, not JAR files within the JAR file or classes accessible over internet protocols. To load classes in JAR files within a JAR file into the class path, you must write custom code to load those classes. For example, if MyJar.jar contains another JAR file called MyUtils.jar, you cannot use the Class-Path header in MyJar.jar's manifest to load classes in MyUtils.jar into the class path.
So, it seems I cannot include other jar files in my jar file.