title: Android Studio error: Execution failed for task ':app:dexDebug'
body: <p>When I'm running a application I meet this problem.Any one has any idea?</p>
  
  <ul>
  <li>***Error:Execution failed for task ':app:dexDebug'.
  
  <blockquote>
    <p>com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command
    'C:\Program Files\Java\jdk1.7.0_75\bin\java.exe'' finished with
    non-zero exit value 2***</p>
  </blockquote></li>
  </ul>
  
  <p>and this is my gradle</p>
  
  <pre><code>dependencies {
  compile 'com.google.code.gson:gson:2.2.4'
  compile 'com.google.android.gms:play-services:+'
  compile files('libs/android-support-v13.jar')
  compile files('libs/bolts-android-1.1.4.jar')
  compile files('libs/jmimemagic.jar')
  compile files('libs/Parse-1.9.0.jar')
  compile files('libs/picasso-2.1.1.jar')
  compile files('libs/pinchzoom.jar')
  compile files('libs/unirest-java-1.4.5.jar')
  }
  </code></pre>