I have an odd issue with codenameone, and I'm not even sure what went wrong. I've tried to "send windows phone build", and don't think I have changed anything else since then. However, after I did so the simulator wouldn't launch and kept saying my imports were wrong. They weren't, the suggested solution was importing once that were already in.
The errors I get
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.codename1.impl.javase.Simulator.main(Simulator.java:59)
Caused by: java.lang.ClassNotFoundException: com.mycompany.myapp.MyApplication
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.findSystemClass(Unknown Source)
at com.codename1.impl.javase.ClassPathLoader.findClass(ClassPathLoader.java:100)
at com.codename1.impl.javase.ClassPathLoader.loadClass(ClassPathLoader.java:50)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.codename1.impl.javase.Executor.main(Executor.java:45)
... 5 more
All the classes he can't find are actually in my solution, I already tried re-adding them to the build path. Any suggestions?
That is odd.
First check that you indeed still have the package com.mycompany.myapp where you have the public class MyApplication. Do a clean build of the project and see if this class makes it into the jar file under the dist folder.
Related
I'm exporting an .jar file into an .exe file, it's a console application and the command line should appears on clicking.
But I'm getting this error and dont know how to find the solution, I'm using exe4j.
Does it needs a lib or an option that I've missed?
Here's the stacktrace:
java.lang.NoClassDefFoundError: java/lang/ModuleLayer
at com.exe4j.runtime.jpms.ModuleHandler.findClass(ModuleHandler.java:17)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:79)
at com.exe4j.runtime.WinLauncher.main(WinLauncher.java:94)
Caused by: java.lang.ClassNotFoundException: java.lang.ModuleLayer
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 7 more
I recently updated java, I went to eclipse opened up my code and saw that there were a lot of errors that weren't there before I saved last time I dont know what it's asking for and I know its not a problem with my code. Everytime i run it says the following:
Exception in thread "main" java.lang.NoClassDefFoundError: [LString;
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.privateGetMethodRecursive(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at sun.launcher.LauncherHelper.validateMainClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: String
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 7 more
as well as saying an JNI error has occured as well as Java Exception.
I haven't tried adding classes as I don't know what will happen if I do.
Did you remove the old version when you upgraded Java? Go to Preferences->Java->Installed JREs and check that the new version is selected.
If the new version isn't listed, use the Search button.
We had installed version of our applications (without any instrumentation or cobertura jar included before generating application bundles).
After installation we instrumented all the jar with cobertura, and included cobertura jar file in java classpath. but while starting application it give below error.
any input will really help, thanks.
Java version "1.7.0_25"
cobertura ver 1.9.4.1
Exception in thread "main" java.lang.NoClassDefFoundError: net/sourceforge/cobertura/coveragedata/HasBeenInstrumented
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: net.sourceforge.cobertura.coveragedata.HasBeenInstrumented
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 13 more
You should add cobetura.jar to Bootstrap Classes with -Xbootclasspath. More info: https://docs.oracle.com/javase/8/docs/technotes/tools/findingclasses.html
This needs to be done in order to load the cobetura classes, which are needed in order to load your app classes.
I have been able to get rid of this problem by running a late package goal, as it re-compiles and re-packages de code without Cobertura.
The goals I use are:
clean site package
We have an application packed with install4j.
The initial step is to choose between typical and custom installations.
The custom installation is usually bringing up the option to choose the localsettings folder, the appdata folder and in the next step, the installation folder (default: Program Files).
For some reason, in a specific environment, when checking neither of the options, the installation proceeds without asking for the desired folder paths.
An error file was created as well:
java.lang.ClassNotFoundException: I4jScript_Internal_12
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runBooleanScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runBooleanScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runBooleanScript(Unknown Source)
at com.install4j.runtime.installer.controller.Controller.executeActions(Unknown Source)
at com.install4j.runtime.installer.controller.Controller.handleCommand(Unknown Source)
at com.install4j.runtime.installer.controller.Controller.start(Unknown Source)
at com.install4j.runtime.installer.Installer.main(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
at com.exe4j.runtime.WinLauncher.main(Unknown Source)
at com.install4j.runtime.launcher.WinLauncher.main(Unknown Source)
Could you please let me know, what could be the reason for this behavior?
The class that is not found is for a script in your install4j project. This can only happen if there is an inconsistency in your installation directory, i.e. if .install4j/user.jar and .install4j/i4jparams.conf are not from the same installer.
I work for a local school district part time. They run a piece of software called A+ learning system. It uses the java runtime environment to do what it does. On one of our computers, it isn't running; opening a command prompt and typing out:
java -jar als.jar
gives the following error messages.
C:\als30\alsclient>java -jar als.jar > C:\alsdebuginfo.txt
Exception in thread "main" java.lang.NoClassDefFoundError: javax/media/ControllerListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at ALS.checkALSRunning(ALS.java:1017)
at ALS.main(ALS.java:192)
Caused by: java.lang.ClassNotFoundException: javax.media.ControllerListener
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 14 more
I really don't know enough about java or A+ learning system to be able to debug this stuff. My only hunch is that maybe the computer is running the wrong version of the Java Runtime Environment. Any shove in the right direction would be greatly appreciated.
Thanks in advance guys.
It looks like the optional Java Media Framework is not installed.
You can get it here, along with installation instructions.
ClassNotFoundException usually means that a class is missing that it is expecting to be on the classpath. My guess is that it is expecting a system library, or a separate library, to be available (installed to the Java lib directory maybe) that isn't. Does that help at all?