apply plugin: 'com.android.application' apply plugin: 'me.tatarka.retrolambda' buildscript { repositories { mavenCentral() } dependencies { classpath 'me.tatarka:gradle-retrolambda:2.5.0' } } repositories { mavenCentral() } android { compileSdkVersion 21 buildToolsVersion "21.1.1" compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } defaultConfig { applicationId "com.annimon.java8streamexample" minSdkVersion 8 targetSdkVersion 21 versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled true proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile files('libs/Lightweight-Stream-API.jar') compile 'com.android.support:appcompat-v7:21.0.3' }