title: I m getting this error ..pls guide me to solve it
body: <p>**Error:Execution failed for task ':app:transformClassesWithDexForDebug'.</p>
  
  <blockquote>
    <p>com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.7.0_79\bin\java.exe'' finished with non-zero exit value 3**</p>
  </blockquote>
  
  <p>**My Girdle file **</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
   android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"
  
   defaultConfig {
      applicationId "com.app"
      minSdkVersion 15
      targetSdkVersion 23
      versionCode 16
      versionName "1.16"
      multiDexEnabled true
   }
   buildTypes {
      release {
          minifyEnabled false
          shrinkResources true
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
   }
  
   compileOptions {
      sourceCompatibility JavaVersion.VERSION_1_7
      targetCompatibility JavaVersion.VERSION_1_7
   }
  
   packagingOptions {
      exclude 'META-INF/DEPENDENCIES.txt'
      exclude 'META-INF/LICENSE.txt'
      exclude 'META-INF/NOTICE.txt'
      exclude 'META-INF/NOTICE'
      exclude 'META-INF/LICENSE'
      exclude 'META-INF/notice.txt'
      exclude 'META-INF/license.txt'
      exclude 'META-INF/dependencies.txt'
    }
   }
  
   dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.facebook.android:facebook-android-sdk:4.+'
    compile 'com.google.android.gms:play-services:8.4.0'
    compile 'com.google.android.gms:play-services-appinvite:8.4.0'
    compile 'com.google.android.gms:play-services-analytics:8.4.0'
    compile 'org.apache.httpcomponents:httpclient:4.5.1'
    compile 'com.android.support:multidex:1.0.0'
    compile 'com.android.support:support-v13:23.1.1'
    compile 'com.android.support:design:23.1.1'
    compile 'com.google.android.gms:play-services-ads:8.4.0'
    compile 'com.google.android.gms:play-services-identity:8.4.0'
    compile 'com.google.android.gms:play-services-gcm:8.4.0'
    compile 'com.android.support:support-v4:23.1.1'
    compile 'com.jayway.android.robotium:robotium-solo:5.5.4'
   }
  </code></pre>