issues in ruing ap in android studio

I am moving my projects from eclipse to Android Studio. While ruing one of my app I get the following error. Not able to find any solution. I have enabled multidex as well.

Error:Execution failed for task ':app:transformClassesWithDexForDebug'.

com.android.build.api.transform.TransformException: java.lang.RuntimeException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.inteal.ExecException: Process 'command 'C:Program FilesJavajdk1.7.0_79binjava.exe'' finished with non-zero exit value 1

also my gradle file is below

apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.3"
defaultConfig {
    applicationId "com.sousmi.flextutorstudentsterling"
    minSdkVersion 9
    targetSdkVersion 21
}buildTypes {
    release {
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard- android.txt'), 'proguard-project.txt', 'proguard-google-api-client.txt'
     }
   }
 }
 dependencies {
 compile 'com.android.support:support-v4:23.4.0'
 compile 'com.google.android.gms:play-services:+'
 compile 'com.google.http-client:google-http-client-gson:1.20.0'
compile 'com.google.code.gson:gson:2.1'
compile 'com.android.support:appcompat-v7:23.4.0'
compile files('libs/activation.jar')
compile files('libs/additioal.jar')
compile files('libs/android-support-v7-cardview.jar')
compile files('libs/android-support-v7-recyclerview.jar')
compile files('libs/commons-logging-1.1.1.jar')
compile 'com.google.api-client:google-api-client:1.18.0-rc'
compile 'com.google.api-client:google-api-client-android:1.18.0-rc'
compile 'com.google.api-client:google-api-client-appengine:1.18.0-rc'
compile 'com.google.http-client:google-http-client:1.18.0-rc'
compile 'com.google.http-client:google-http-client-android:1.18.0-rc'
compile 'com.google.http-client:google-http-client-appengine:1.18.0-rc'
compile 'com.google.oauth-client:google-oauth-client:1.18.0-rc'
compile 'com.google.oauth-client:google-oauth-client-appengine:1.18.0-rc'
compile files('libs/google-api-client-gson-1.18.0-rc.jar')
compile files('libs/google-api-client-jackson2-1.18.0-rc.jar')
compile files('libs/google-api-client-java6-1.18.0-rc.jar')
compile files('libs/google-api-client-servlet-1.18.0-rc.jar')
compile files('libs/google-http-client-jackson2-1.18.0-rc.jar')
compile files('libs/google-http-client-jdo-1.18.0-rc.jar')
compile files('libs/google-oauth-client-java6-1.18.0-rc.jar')
compile files('libs/google-oauth-client-jetty-1.18.0-rc.jar')
compile files('libs/google-oauth-client-servlet-1.18.0-rc.jar')
compile files('libs/GraphView-4.0.1.jar')
compile files('libs/httpclient-4.0.1.jar')
compile files('libs/httpcore-4.0.1.jar')
compile files('libs/jackson-core-2.1.3.jar')
compile files('libs/jetty-6.1.26.jar')
compile files('libs/jetty-util-6.1.26.jar')
compile files('libs/jsr305-1.3.9.jar')
compile files('libs/jxl.jar')
compile files('libs/mail.jar')
compile files('libs/transaction-api-1.1.jar')
 }