title: error initializing mockito, everytime and for any test cases
body: <p>Pretty much spent the entire day fighting this. It doesn't matter what kind of tests/class/interface I use, I get pretty much the same exception. Here's the stackerror:</p>
  
  <pre><code>java.lang.AbstractMethodError: org.powermock.api.mockito.internal.mockmaker.PowerMockMaker.isTypeMockable(Ljava/lang/Class;)Lorg/mockito/plugins/MockMaker$TypeMockability;
      at org.mockito.internal.util.MockUtil.typeMockabilityOf(MockUtil.java:26)
      at org.mockito.internal.util.MockCreationValidator.validateType(MockCreationValidator.java:21)
      at org.mockito.internal.creation.MockSettingsImpl.validatedSettings(MockSettingsImpl.java:167)
      at org.mockito.internal.creation.MockSettingsImpl.confirm(MockSettingsImpl.java:161)
      at org.mockito.internal.MockitoCore.mock(MockitoCore.java:58)
      at org.mockito.Mockito.mock(Mockito.java:1410)
      at org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotationProcessor.java:33)
      at org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotationProcessor.java:16)
      at org.mockito.internal.configuration.DefaultAnnotationEngine.createMockFor(DefaultAnnotationEngine.java:43)
      at org.mockito.internal.configuration.DefaultAnnotationEngine.process(DefaultAnnotationEngine.java:66)
      at org.mockito.internal.configuration.InjectingAnnotationEngine.processIndependentAnnotations(InjectingAnnotationEngine.java:71)
      at org.mockito.internal.configuration.InjectingAnnotationEngine.process(InjectingAnnotationEngine.java:55)
      at org.mockito.MockitoAnnotations.initMocks(MockitoAnnotations.java:108)
      at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl$1.withBefores(JUnit45AndHigherRunnerImpl.java:27)
      at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:246)
      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
      at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
      at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
      at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
      at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
      at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
      at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
      at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
      at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
      at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:86)
      at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:49)
      at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:69)
      at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:50)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:606)
      at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
      at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
      at org.gradle.messaging.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
      at org.gradle.messaging.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
      at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
      at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:105)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:606)
      at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
      at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
      at org.gradle.messaging.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:355)
      at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
      at java.lang.Thread.run(Thread.java:745)
  </code></pre>
  
  <p>Infact, I don't even understand why the powermock library is involved. It does get compiled as I was trying to mock some final classes, but that was hours ago!</p>
  
  <p>Here's an actual set of files I'm trying to utilize:</p>
  
  <pre><code>public class ClassA {
  
      private String message;
  
      public String getMessage(){
  
          message="classA";
          return message;
  
      }
  }
  
  public class ClassB {
  
      private ClassA myClass;
  
      public ClassB(ClassA aClass){
          this.myClass=aClass;
      }
  
      public ClassA getClassA(){
          return myClass;
      }
  }
  </code></pre>
  
  <p>and the testing class:</p>
  
  <pre><code>package com.icidigital.services
  
  import com.icidigital.users.ClassA
  import com.icidigital.users.ClassB
  import org.junit.Before
  import org.junit.Test
  import org.junit.runner.RunWith
  import org.mockito.Mock
  import org.mockito.Mockito
  import org.mockito.runners.MockitoJUnitRunner
  /**
   * Created by apil.tamang on 7/28/15.
   */
  @RunWith(MockitoJUnitRunner.class)
  class TestSimplestMock {
  
      ClassB classB;
  
      @Mock
      ClassA mockA;
  
      @Before
      public void setup(){
  
  
          classB=new ClassB(mockA);
  
          Mockito.when(classB.getClassA()).thenReturn(null);
  
      }
  
      @Test
      public void testA(){
  
          ClassA obj=classB.getClassA();
  
          assert(obj==null);
  
      }
  }
  </code></pre>