I am trying to build a project in which the Apache POI 3.15 library is connected and multidex is multidex .
However, at assembly the error knocks out:
Information:Gradle tasks [:app:assembleDebug] Jack is required to support java 8 language features. Jack is required to support java 8 language features. :app:preBuild UP-TO-DATE :app:preDebugBuild UP-TO-DATE :app:checkDebugManifest :app:preReleaseBuild UP-TO-DATE :app:prepareComAndroidSupportAnimatedVectorDrawable2421Library UP-TO-DATE :app:prepareComAndroidSupportAppcompatV72421Library UP-TO-DATE :app:prepareComAndroidSupportDesign2421Library UP-TO-DATE :app:prepareComAndroidSupportMultidex101Library UP-TO-DATE :app:prepareComAndroidSupportRecyclerviewV72421Library UP-TO-DATE :app:prepareComAndroidSupportSupportCompat2421Library UP-TO-DATE :app:prepareComAndroidSupportSupportCoreUi2421Library UP-TO-DATE :app:prepareComAndroidSupportSupportCoreUtils2421Library UP-TO-DATE :app:prepareComAndroidSupportSupportFragment2421Library UP-TO-DATE :app:prepareComAndroidSupportSupportMediaCompat2421Library UP-TO-DATE :app:prepareComAndroidSupportSupportV42421Library UP-TO-DATE :app:prepareComAndroidSupportSupportVectorDrawable2421Library UP-TO-DATE :app:prepareIoReactivexRxandroid121Library UP-TO-DATE :app:prepareDebugDependencies :app:compileDebugAidl UP-TO-DATE :app:compileDebugRenderscript UP-TO-DATE :app:generateDebugBuildConfig UP-TO-DATE :app:mergeDebugShaders UP-TO-DATE :app:compileDebugShaders UP-TO-DATE :app:generateDebugAssets UP-TO-DATE :app:mergeDebugAssets UP-TO-DATE :app:generateDebugResValues UP-TO-DATE :app:generateDebugResources UP-TO-DATE :app:mergeDebugResources UP-TO-DATE :app:processDebugManifest UP-TO-DATE :app:processDebugResources UP-TO-DATE :app:generateDebugSources UP-TO-DATE :app:incrementalDebugJavaCompilationSafeguard UP-TO-DATE :app:compileDebugJavaWithJavac Note: D:\Projects\Reminderofwork\app\src\main\java\com\rostislav\dugin\reminderofwork\XLSXHelper.java uses or overrides a deprecated API. Note: Recompile with -Xlint:deprecation for details. :app:compileRetrolambdaDebug :app:compileDebugNdk UP-TO-DATE :app:compileDebugSources :app:prePackageMarkerForDebug :app:transformClassesWithDexForDebug To run dex in process, the Gradle daemon needs a larger heap. It currently has approximately 910 MB. For faster builds, increase the maximum heap size for the Gradle daemon to more than 2048 MB. To do this set org.gradle.jvmargs=-Xmx2048M in the project gradle.properties. For more information see https://docs.gradle.org/current/userguide/build_environment.html Error:trouble processing "javax/xml/XMLConstants.class": Error:Ill-advised or mistaken usage of a core class (java.* or javax.*) Error:when not building a core library. Error:This is often due to inadvertently including a core library file Error:in your application's project, when using an IDE (such as Error:Eclipse). If you are sure you're not intentionally defining a Error:core class, then this is the most likely explanation of what's Error:going on. Error:However, you might actually be trying to define a class in a core Error:namespace, the source of which you may have taken, for example, Error:from a non-Android virtual machine project. This will most Error:assuredly not work. At a minimum, it jeopardizes the Error:compatibility of your app with future versions of the platform. Error:It is also often of questionable legality. Error:If you really intend to build a core library -- which is only Error:appropriate as part of creating a full virtual machine Error:distribution, as opposed to compiling an application -- then use Error:the "--core-library" option to suppress this error message. Error:If you go ahead and use "--core-library" but are in fact Error:building an application, then be forewarned that your application Error:will still fail to build or run, at some point. Please be Error:prepared for angry customers who find, for example, that your Error:application ceases to function once they upgrade their operating Error:system. You will be to blame for this problem. Error:If you are legitimately using some code that happens to be in a Error:core package, then the easiest safe alternative you have is to Error:repackage that code. That is, move the classes in question into Error:your own package namespace. This means that they will never be in Error:conflict with core system classes. JarJar is a tool that may help Error:you in this endeavor. If you find that you cannot do this, then Error:that is an indication that the path you are on will ultimately Error:lead to pain, suffering, grief, and lamentation. Error:1 error; aborting :app:transformClassesWithDexForDebug FAILED 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.internal.ExecException: Process 'command 'D:\SDK\jdk_8\bin\java.exe'' finished with non-zero exit value 1 My build.gradle :
apply plugin: 'com.android.application' apply plugin: 'me.tatarka.retrolambda' android { compileSdkVersion 24 buildToolsVersion "24.0.3" defaultConfig { applicationId "com.rostislav.dugin.reminderofwork" minSdkVersion 21 targetSdkVersion 24 versionCode 1 versionName "1.0" multiDexEnabled true } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { compile fileTree(include: ['*.jar'], dir: 'libs') testCompile 'junit:junit:4.12' compile 'org.greenrobot:eventbus:3.0.0' compile 'com.android.support:appcompat-v7:24.2.1' compile 'com.android.support:design:24.2.1' compile 'io.reactivex:rxandroid:1.2.1' compile 'io.reactivex:rxjava:1.1.6' compile 'com.android.support:multidex:1.0.1' compile 'org.apache.poi:poi:3.15' compile 'org.apache.poi:poi-ooxml:3.15' } What is the problem and how to fix it?
