I have made a library project that uses Async and Json/Gson libraries. It is working perfectly fine if I use this project as library project inside another Application Project. I don't want my code to be open to world so I tried to make a JAR of my Library Project. I am getting error that shows that the Async and GSON libraries can not be referenced.
Is my JAR not including the ASYNC and JSON libraries?
if not then how to do it? I have Checked the libs folder when exporting Library Project to JAR.
If Jar has included Libraries then why can't it get a reference? Is there any way that I can make a reference to the libraries present inside of the JAR of my library project?
Where am I making a mistake?
Update-1
Ok I have checked by extracting my jar and there is a lib folder there which has all the libraries that I have used in my Library Project.
Update-2
How I am exporting my Library Project as Jar.
Select Project to Export
Chose Jar File
Chose only src and lib folder.
Checked
Export generated class files and resources
Compress the contents of the JAR file
Chose Destination
Left All other checks as defaults and Finish.
Related
I have a maven project converted into executable jar which is hosted and running just fine.
How to convert this jar src into a project in eclipse so that i can debug and do modifications to the existing files?
I have tried importing as maven, but it imports the libraries inside the META-INF, and i can't see any class files or pages.
This is the project structure JD-GUI,
Use JD GUI. Open the application, drag and drop your JAR file into it.
Is there a way, how to add custom library to android app. If I add non-android library to my project it throws error "Only Android project can be add as dependency" and if I reference Android Library to Java Application it throws "This project cannot be added because it does not produce a JAR file using an Ant script." the point is, that I want to keep code on one place (library) and reuse it.
Your best bet is :
1.Create a folder called libs in your project's root folder
2.Copy your JAR files to the libs folder
3.Now right click on the Jar file and then select Build Path > Add to Build Path, which will create a folder called 'Referenced Libraries' within your project
I have made a utility java project which contains XML, DB and other such utility classes. This requires 3rd party dependencies on some of the Apache common libraries, so I have added it in my java project by configuring the build path in eclipse Juno. Now I want to export this java project as jar file. When I am exporting this project as runnable jar file, it is working fine i.e if I include this jar in some other java project, I am able to access the utility classes, but when I am simply exporting the utility project as jar, I am not able to use it. Runnable jar requires a main class, but I don't want to keep a main class in my utility java project. I have compared both the jar files. The difference that I found out was that in runnable jar file, there is no .classpath file but a simple jar file that is in there. In the runnable jar file, all the jar files are mentioned in file named MANIFEST-INF.mf file, but in simple jar file it contains only version of .mf file. Can anyone tell me how can I make a jar file without a main class and use it for my other java projects so that I just have to include the jar file and use it as it is.
I assume it has not been provided in eclipse because extracting external 3rd party library classes in a utility project is something non-standard. It can result in a lot of problems as your project grows, class conflicts being one of them.
Still if you want to continue with your approach, yon can export your project as a normal jar project. Thereafter after open your project as well as the other third party libs in a utility like 7zip and drag-and-drop your third party library contents(except META-INF) into your project jar. That's all.
If you however want to automate it, ant would be your friend.
If you just export the project to jar file, you can package the jar(war) by using the apache ant tool.
Do something like this:
<jar destfile="${dist}/lib/app.jar"
basedir="${build}/classes"
excludes="**/Test.class"
/>`
I have a Android project with some classes that I would like to compress to a JAR.
I create the JAR by right clicking my project - export - JAR - and the JAR gets created without any warnings.
I can access all classes from the JAR in my code but when I try to build the project get this exception :
java.lang.NoClassDefFoundError: name.of.class.in.package
Does anyone know what resources should be exported with the JAR? The options you get is
.class path
.prject
AndroidManifest.xml
proguard.cfg
project.properties
Right now I have included all of the above.
Making the JAR into a library project is not an option. And just to make it clear I don't have anything in the RES folder of my JAR project.
Open the project properties -> Java Build Path -> Order and Export and check item Android Dependencies are checked to be exported to the result APK.
And if .jar exist in Library tab under Android Dependencies item.
If you have .jar in the "libs" folder it should be included by default.
Just add your JAR to classpath or build your project with Maven and include dependencies
Try generating the jar in a different way. Basically jar is a zipped file of all class files with an extension of .jar.
Select all your class files that needs to be included in a jar file.
Right click and send to compressed (Zip File).
you will have a zipped file which will contain all the class files.
Rename this zipped file with having an extension .jar
Now include this jar file into your project whichever you want to use.
Or if you want to zip all the files by a different method then make sure all the files are zipped together without a folder. So when you unzip the files you should get all the files without contained in a folder.
It looks similar with this topic. Follow the very clear instructions written by Russ Bateman.
I have a little problem importing a project to my android project.
I have built a little library using Ical4Java to parse a .ical file, and that library is exported to a .jar.
In my Android Project i have imported and added to the build path my generated .jar from my library that includes some jars to make my library work.
But when i run my application it just crashes and i get this on the LogCat:
E/AndroidRuntime(14382): java.lang.NoClassDefFoundError: net.fortuna.ical4j.data.CalendarBuilder
That library (ical4j.jar) is imported on the library buildpath and is exported whith my library (mylibrary.jar)..
You can use One-Jar to help you use a jar file that is dependent on other jar files. Basically you can combine them into one jar file.
Here is a little tutorial to help you.
Just put the content of the one jar into the other jar (combine them). They are just zip files.
Is mylibrary.jar an executable jar file?
If so, you cannot reference external jars.