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I am developing for Android 4+ with Eclipse Juno ADT bundle + Google Plugin for Eclipse. I need to programmatically log into a google account to use the Google Calendar API. For this I am making use of account manager. I get the following error: 05-05 13:28:55.605: E/AndroidRuntime(11186): FATAL EXCEPTION: main 05-05 13:28:55.605: E/AndroidRuntime(11186): java.lang.NoClassDefFoundError: com.google.android.gms.common.AccountPicker 05-05 13:28:55.605: E/AndroidRuntime(11186): at com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential.newChooseAccountIntent

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. 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. 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't rely on something from the dot release, perhaps this could work for you as well. Apparently you're using

I would like to use Akka actors in Java. I downloaded the akka-1.0.zip and added akka-actor-1.0.jar to my "Build Path" in Eclipse. Then I wrote this Actor class: package com.example; import akka.actor.UntypedActor; public class MyActor extends UntypedActor { public void onReceive(Object message) throws IllegalArgumentException { if (message instanceof String) { System.out.println("Received: " + message); } else throw new IllegalArgumentException("Unknown message: " + message); } } But I get errors in Eclipse: The type scala.Option cannot be resolved. The type scala.Some cannot be resolved. The

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.android.support:appcompat-v7:23.2.1' compile 'com.squareup.retrofit2:retrofit:2.0.2' compile 'com.squareup

My app is building and running ok when using devices with Android 6.0 or Android 7.0 but when running any device with Android 5.1 (Haven't tested lower) it fails with the following exception: 09-06 11:50:46.100 29601-29601/? E/AndroidRuntime: FATAL EXCEPTION: main Process: me.myapp.main, PID: 29601 java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/internal/zzab; at com.google.firebase.provider.FirebaseInitProvider.zza(Unknown Source) at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source) at android.app.ActivityThread.installProvider