I'm creating a Java Project in Eclipse, write some parser, which gives a random names with use a JSoup Library and when i started a server it gives me a error java.lang.NoClassDefFoundError: org/jsoup/Jsoup. Eclipse files.
I also use Json-simple and everything is fine with it. JSoup is added as an external JAR library, and the error occurs only when I use Jsoup.connect().get; that is, the imported org object.jsoup.nodes.Document does not cause errors.
P.s. I looked through my plugin using 7-zip and there is JSoup.jar in the libs folder, which means that the plugin is correctly assembled in a vmset with libraries.
You don't have your libraries in the server.
To fix it, you can:
Add them in the compiled jar. To do this, just check compilation options, or convert your project as maven or gradle
Use another plugin that implement them.
Load library jar from your plugin such as explained here or here
Related
I'm using gradle for my build tool. I have a project that uses a jar file and I have the jar file imported into my gradle for my project which works great when doing build and deploy.
Problem is that I'm developing the jar file along with the project. When I change the library code, I have to build and move the jar file into my project. PITA.
Instead, I'd like to set up my IntelliJ environment so it uses the module's code first and then looks at the jar file later/never.
It seems like something that IntelliJ should be set up to do, but searching turned up nothing and I can't seem to find anything banging around in the IDE.
Anyone tackle this?
Currently such setup is not supported for Gradle project. There is however a hidden option that you may try to set:
external.system.substitute.library.dependencies = true
via "Help | Edit Custom Properties" and restart.
The corresponding request for this is https://youtrack.jetbrains.com/issue/IDEA-134885
I have a .jar library and used 7-zip to extract the files and edit the .java source code inside.
I need to be able to build this to update the .class files before I turn it back into a .jar.
The library won't build as it's missing dependencies, but I don't know how to add these.
The library's using JNI, and LibGDX, and as an amateur, I am out of my depth on this problem that I am stuck on.
The original .jar file is in the link below
https://github.com/finnstr/gdx-liquidfun-extension/blob/master/libs/gdx-liquidfun.jar
Download following 2 JARs and add them to the build path of your Eclipse project. If you're not using Eclipse then add them to classpath, however it will be a lot easier to do with Eclipse.
http://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx/1.5.2
http://mvnrepository.com/artifact/com.badlogicgames.gdx/gdx-jnigen/1.5.2
I have included older version from 2014, as the source code that in the git for liquidfun is using some older version of classes which are not available in new version of above JARs.
Eclipse has an option to export project as a JAR file. Use that and you're done.
If you're using plain Java then you'll have to compile all directories one by one (Java: How can I compile an entire directory structure of code ?)
i am trying to create a simple hello-akka project using the typesafe activator. I have everything working and the project even runs in the typesafe tab. I clicked on create eclipse project, and some files are added to my directory but i cannot figure out how to open them and run the file in eclipse!
These are the files i currently have in the directory:
.sbtserver
project
src
target
gitignore
(GITIGNORE FILE?)
activator.bat and activator.jar
build.sbt
In another workspace i tried creating my own scala project, by adding akka-actor.jar to the libary but i get the following error :
Description Resource Path Location Type
missing or invalid dependency detected while loading class file 'ActorSystem.class'. Could not access term typesafe in package com, because it (or its dependencies) are missing. Check your build definition for missing or conflicting dependencies. (Re-run with `-Ylog-classpath` to see the problematic classpath.) A full rebuild may help if 'ActorSystem.class' was compiled against an incompatible version of com. tst Unknown Scala Problem
Any help or suggestions would be greatly appreciated!
There are quite a few dependencies you'll need to find and add if you're determined to make this work -- a scala-library, for example. It's better to find a way to integrate your build with your IDE if you can -- this will allow the IDE to find dependencies the same way the build does -- and in this case, the build system is SBT.
The easiest path forward may be to download ScalaIDE, which is a Scala specific package for Eclipse. This should come ready to go with support for SBT projects. Most Actor/Scala devs I know use IntelliJ or ScalaIDE.
Another option would be to use the SBT plugin for Eclipse, but in my experience it tends to be unreliable, changing with far less frequency than the IDE itself. If you install it and it doesn't look like it's working, you're probably right.
Finally, you can ditch SBT for Gradle or Maven and then use the Gradle or Maven plugins for Eclipse. If you have either of those in your shop already this is likely something you will need to do down the road, anyway. SBT is a good build system but nowhere near as feature rich as Gradle or ubiquitous as Maven.
I have a android project with a runtime directory, and there is a jar file in this directory. This project can be built in eclipse. However, if I put the jar file in some other place, say, libs directory. This project would fail to build. In addition, even if I place the jar file in the runtime directory, this project cannot be built in Intellij. When the project fails to build, the error logs looks like the following.
Android Dex: [GameDemo] EXCEPTION FROM SIMULATION:
..... bad range 5..6; actual size 5
at bytecode offset 0000005
while processing ()V
So here are my questions:
Given a project in Eclipse, why project can be built when the jar file is in runtime library, but not when it's in libs directory.
Even though the jar is in runtime directory, why this project cannot be built in Itellij. What's the difference in build process of the two ide in term of android project.
Thanks!
I believe you are having this issue because you are trying to integrate CMCC's mobile SDK. It's a piece of garbage but that's another topic. For your purpose, just setting the library as "Provided" instead of "Compile" in the module settings of your IntelliJ project will get you past the compile stage. the SDK's probably loading it on the fly but not sure why that's necessary. Also be careful how you add the dynamic lib they provided. Make sure you do a plain copy instead of through the android NDK module dependency crap.
Seems they wanna avoid their sdk to be easily decompiled and byte hacked.
So they provided a dev time lib written in java that has interface feature only and implemented the real logic/type/class in a native lib.
I use eclipse for Google Android development.
I've created a library project ([x] Is Library in the Android-settings), which includes an external jar-file (Referenced Libraries). This library project are referenced in another Project (the actual project which will use the library project). This is done by add the project under the Android-settings.
the source compiles but if I want to execute it on the device, I get the NoClassDefFoundError for a class which is inside the jar-file which is included in the library project.
Edit: The jar-file ist added to the exported entries ([x] my.jar on the Order and Export-Tab from the library project)
Is there a clean way to get this working?
It has been clearly stated in offcial API here:
A library project can include a JAR library
You can develop a library project that itself includes a JAR library, however you need to manually edit the dependent application project's build path and add a path to the JAR file
The jar lib must be manually added to the dependent application project's build path, not only the library project build path itself.
Update from SDK r17:
This is automatically handled by ADT now, check out new feature for ADT 17.0.0 release here:
Added feature to automatically setup JAR dependencies. Any .jar files in the /libs folder are added to the build configuration (similar to how the Ant build system works). Also, .jar files needed by library projects are also automatically added to projects that depend on those library projects. (more info)
For those who followed the steps(even check the projects in "Order and Export") and still have the java.lang.ClassNotFoundException in the API 17, the final step is to check that your compiler does not run with Java 1.7. If is 1.7 then you should change it to 1.6 for all your projects. After that it will ask to rebuild all the projects and successfully ran on my phone :)
To change the java compile version in eclipse, this is located in: Project properties > Java Compiler > Compiler Compliance level: 1.6
Go to project properties -> build path-> libraies
If you see your jar files like this
snmp4j.jar - e:\software\jars
Its may your problem
Add libs folder in your project and copy jar file in that folder. Right click jar file and go build path -> add to build path. Then you can see your jar as
snmp4j.jar - project_name/libs
Its worked for me.
I had two projects using the same library: one working, the other one crashing with java.lang.NoClassDefFoundError.
After nothing else helped me, I looked into the file project.properties in the root directory of my project.
The working project had the android.library.reference line (the last line below), the crashing one did not:
# Project target.
target=android-17
android.library.reference.1=../my-library-project
I manually added the line and it started working!
(Yes, I did try both (project) properties -- java build path -- projects and (project) properties -- java build path -- order and exports -- nothing helped.)
PS By the way, "project properties" has also the "project references" tab. No idea if it would work.
I had a minor issue when I upgraded to ADT17 where my libs weren't being imported properly. Turns out this is because my librarys were being linked as dependancies from my lib folder not libs!
Seems librarys have to be in the libs folder from now
I had a similar problem and non of the solutions out here fixed it.
Short version: the JAR was compiled in Java 1.7 and could not be found by Dalvik.
We build an internal JAR that we share across backend and mobile clients with Maven. The problem ended up being that the JAR was compiled with Java 1.7. Androids dalvik only supports Java 1.5 and 1.6. This is why everything works fine in Eclipse as it's not compiled to dalvik at this point.
We even specified the target and source version in the Maven compiler plugin to compile with Java 1.6. This did not work because only JDK 1.7 was installed on the build machine. A small note at the bottom of the Maven page gave us the hint: Note: Merely setting the target option does not guarantee that your code actually runs on a JRE with the specified version.
To see if you have this problem as well, rename your *.jar file to *.zip unpack it, and look in the MANIFEST.MF file for the Build-Jdk: parameter to see what Java version actually compiled your JAR.
Another thing to pay attention to is library package names.
If you are using ADT21 and you happen to have libraries that have the same package name, there will be error during compile but it will still compile and run in Eclipse, giving you an APK that is missing some of the resource classes. Hence the crash when you run the app.
If you compile it with ANT then you can see the compile error that says two or more libraries use the same package name.
To fix this, rename your library project by using Android Tools -> Rename Application Package. Then everything will go back to normal.
It took me almost entire day to figure this out...