title: error: package com.android.annotations does not exist
body: <p>I have the following class</p>
  
  <pre><code>import com.android.annotations.NonNullByDefault;
  
  @NonNullByDefault
  public final class Log {
      ...
  }
  </code></pre>
  
  <p>and here is my build.gradle file (some parts omitted)</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 25
      buildToolsVersion '24.0.1'
  
      defaultConfig {
          minSdkVersion 16
          targetSdkVersion 25
          versionCode 2
          versionName "0.2"
      }
  
      compileOptions {
          sourceCompatibility JavaVersion.VERSION_1_7
          targetCompatibility JavaVersion.VERSION_1_7
      }
  
  }
  
  dependencies {    
      compile 'com.android.support:appcompat-v7:25.0.0'
      compile 'com.android.support:support-annotations:25.0.0'
      compile 'com.android.support:design:25.0.0'
  }
  </code></pre>
  
  <p>In Android Studio there is no warning raised for my class</p>
  
  <p><a href="https://i.stack.imgur.com/7HE9l.png" rel="noreferrer"><img src="https://i.stack.imgur.com/7HE9l.png" alt="enter image description here"></a></p>
  
  <p>However when I try to build and run my app I get this error from gradle</p>
  
  <pre><code>Information:Gradle tasks [:app:clean, :app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:mockableAndroidJar, :app:prepareDebugUnitTestDependencies, :app:assembleDebug]
  Warning:[options] bootstrap class path not set in conjunction with -source 1.7
  /home/puter/git-repos/TaskManager3/app/src/main/java/com/treemetrics/taskmanager3/util/Log.java
  Error:(3, 31) error: package com.android.annotations does not exist
  Error:(7, 2) error: cannot find symbol class NonNullByDefault
  Error:Execution failed for task ':app:compileDebugJavaWithJavac'.
  &gt; Compilation failed; see the compiler error output for details.
  Information:BUILD FAILED
  Information:Total time: 21.021 secs
  Information:3 errors
  Information:1 warning
  Information:See complete output in console
  </code></pre>