build.gradle file:
android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"
    defaultConfig {
        applicationId "xxxxx.com.myapp"
        minSdkVersion 9
        targetSdkVersion 22
        versionCode 3
        versionName "1.2"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.1.1'
    compile 'com.google.android.gms:play-services-ads:7.3.0'
    compile files('libs/libGoogleAnalyticsServices.jar')
}
Error Log:
FAILURE: Build failed with an exception.
- What went wrong:
Execution failed for task ':app:dexDebug'.
com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.7.0_51\bin\java.exe'' finished with non-zero exit value 2 
 
     
     
    