noclassdeffounderror

问题 I'm currently writing a unit test project using the version 4.6.1 (Windows Vista + Eclipse). My project is divided in 3 part: A. Unit test application (type:CLDC application) B. Application to be tested (type:CLDC application) C. A library project (type: library,no .jar file imported) The A project should reference the code present in B (and of course even in C). I would like to specify that I can run without problems the project B (referencing C). My problems start when I try to run the

问题 I am getting this exception when I run my app on the device. java.lang.NoClassDefFoundError: com.google.firebase.FirebaseOptions at com.google.firebase.FirebaseApp.zzeh(Unknown Source) at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source) at android.content.ContentProvider.attachInfo(ContentProvider.java:1214) at android.content.ContentProvider.attachInfo(ContentProvider.java:1189) at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source) at

问题 I have an Android library project (written by me and I have the sources) which I use in my Android project - so far so good and no problems. But in that library project I am referencing a foreign .jar file (the SDK for the Bixolon Mobile Printer) and it builds fine and I can reference the SDK's method in my code. However at runtime I get this: 02-16 09:44:43.620: W/dalvikvm(25402): VFY: unable to resolve virtual method 2433: Lcom/bixolon/android/library/BxlService;.GetStatus ()I 02-16 09:44

问题 I've created my own URLClassLoader , and set it as the system classloader via java.system.class.loader . It's initialized and everything, but the classes I'm trying to load aren't found. Here's the URLClassLoader : public class LibraryLoader extends URLClassLoader { public LibraryLoader(ClassLoader classLoader) { super(new URL[0], classLoader); } synchronized public void addJarToClasspath(String jarName) throws MalformedURLException, ClassNotFoundException { File filePath = new File(jarName);

问题 Wondering if any guru out there could shed an idea on why the following randomly happens. We have a web application we deploy in Jetty 6.1.26 running on a Linux installation with JRE 1.7_03 Not every time, but every now and then, when Jetty starts up - what appears to be a random class (from our project) seems to be the source of a NoClassDefFound error. If we restart Jetty they problem disappears. The only pattern that occurs seems to be the classes at the root of the error are populated via

问题 I have a funny problem - if my application runs for a long time (> 20h), then sometimes I get NoClassDefFound error - seems like JVM decided that the class is not going to be used anyway and GCd it. To be a bit more specific, here's an example case: object ErrorHandler extends PartialFunction[Throwable,Unit] { def isDefinedAt(t: Throwable) = true def apply(e: Throwable) =e match { // ... handle errors } } // somewhere else in the code... try { // ... long running code, can take more than 20

问题 Already seen: NoClassDefFoundError Android with ActionBarActivity and ActionBarActivity catch an error on Phone I am trying to use ActionBarCompact in my project. I have linked android-support-v7 project as well as its jar in my project following and checking the steps from lots of sources, but still I am unable to deal with the problem. When I built my project, there is no error, but there is exception at runtime. Don't know why class is not detected. Please tell me what is wrong. Thanks.

问题 I created an applet using Eclipse: package gui; public class MyApplet extends JApplet { This applet needs two external jar's: proj.jar and firebirdsql-full.jar (jdbc) Therefore I created the HTML like this, in the same folder as the jars: <APPLET CODE="gui.MyApplet.class" width="650" height="650" ARCHIVE="proj.jar,myApplet.jar,firebirdsql-full.jar"> <a href="http://java.com/en/download/index.jsp">Java</a> </APPLET> I also tried to change the jar order in the ARCHIVE attribute. However I keep

问题 Getting an error if using Apache Commons Validator: java.lang.NoClassDefFoundError: org/apache/oro/text/perl/Perl5Util Even if, Apache Commons Validator /dependencies state that ORO.jar is optional. 回答1: Put the jar containing "org/apache/oro/text/perl/Perl5Util" class on the server and modify the classpath of the server to include the jar file. 回答2: I was having this issue on version 1.3.1 of Apache's Validator. I rolled back to 1.3.0 and it included the oro dependency just fine. If you don

问题 i am using Rtofit to handling the Serverside Data from Mobile After Implementing the Retrofit I am Getting the below Exception any know about this issue tell me where i am did wrong Init Retrofit: mRetrofit = new Retrofit.Builder() .baseUrl(AppConstance.APP_URL) .addConverterFactory(GsonConverterFactory.create()) .build(); Iservice = mRetrofit.create(IdeaService.class); Gradle File dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com