title: Why am I getting "Failed to load ApplicationContext" Spring, jUnit with JavaConfig
body: <p>Why am I getting "Failed to load ApplicationContext" Spring, jUnit with JavaConfig</p>
  
  <p>Here is my test class:</p>
  
  <pre><code>@RunWith(SpringJUnit4ClassRunner.class)
  @ContextConfiguration(classes = HelloWorldConfig.class)
  public class TestApp
  {
  
      @Test
      public void testBean()
      {
        ApplicationContext context = new AnnotationConfigApplicationContext(HelloWorldConfig.class);
  
        HelloWorld helloWorld = context.getBean(HelloWorld.class);
        helloWorld.setMessage("I am in Staten Island, New York");
  
        Assert.assertEquals(helloWorld.getMessage(), "I am in Staten Island, New York");
      }
  }
  </code></pre>
  
  <p>here is the stack trace.</p>
  
  <pre><code>    java.lang.IllegalStateException: Failed to load ApplicationContext  at
  org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:99)
      at
  org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:122)
      at
  org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
      at
  org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
      at
  org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:312)
      at
  org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:211)    at
  org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:288)
      at
  org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
      at
  org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:284)
      at
  org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
      at
  org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
      at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)  at
  org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)     at
  org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)   at
  org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)     at
  org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)    at
  org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
      at
  org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
      at org.junit.runners.ParentRunner.run(ParentRunner.java:236)    at
  org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
      at org.junit.runner.JUnitCore.run(JUnitCore.java:157)   at
  com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:77)
      at
  com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)
      at
  com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at
  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at
  com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
  Caused by: org.springframework.beans.factory.BeanCreationException:
  Error creating bean with name 'messageService': Injection of autowired
  dependencies failed; nested exception is
  org.springframework.beans.factory.BeanCreationException: Could not
  autowire field: private
  com.johnathanmarksmith.hellospring.dao.MessageDao
  com.johnathanmarksmith.hellospring.service.MessageServiceImpl.messageDao;
  nested exception is
  org.springframework.beans.factory.NoSuchBeanDefinitionException: No
  qualifying bean of type
  [com.johnathanmarksmith.hellospring.dao.MessageDao] found for
  dependency: expected at least 1 bean which qualifies as autowire
  candidate for this dependency. Dependency annotations:
  {@org.springframework.beans.factory.annotation.Autowired(required=true)}
      at
  org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:288)
      at
  org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1122)
      at
  org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
      at
  org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
      at
  org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
      at
  org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
      at
  org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
      at
  org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
      at
  org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626)
      at
  org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
      at
  org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
      at
  org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:120)
      at
  org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
      at
  org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:100)
      at
  org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:248)
      at
  org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContextInternal(CacheAwareContextLoaderDelegate.java:64)
      at
  org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:91)
      ... 28 more Caused by:
  org.springframework.beans.factory.BeanCreationException: Could not
  autowire field: private
  com.johnathanmarksmith.hellospring.dao.MessageDao
  com.johnathanmarksmith.hellospring.service.MessageServiceImpl.messageDao;
  nested exception is
  org.springframework.beans.factory.NoSuchBeanDefinitionException: No
  qualifying bean of type
  [com.johnathanmarksmith.hellospring.dao.MessageDao] found for
  dependency: expected at least 1 bean which qualifies as autowire
  candidate for this dependency. Dependency annotations:
  {@org.springframework.beans.factory.annotation.Autowired(required=true)}
      at
  org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:514)
      at
  org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
      at
  org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:285)
      ... 44 more Caused by:
  org.springframework.beans.factory.NoSuchBeanDefinitionException: No
  qualifying bean of type
  [com.johnathanmarksmith.hellospring.dao.MessageDao] found for
  dependency: expected at least 1 bean which qualifies as autowire
  candidate for this dependency. Dependency annotations:
  {@org.springframework.beans.factory.annotation.Autowired(required=true)}
      at
  org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:986)
      at
  org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:856)
      at
  org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:768)
      at
  org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:486)
  </code></pre>