How to set -source 1 7 in Android Studio and Gradle

Question

I m getting following error when trying to compile my project in Android Studio   Gradle  error  diamond operator is not supported in -source 1 6   I have 1 7 set as target in all project preferences I ve found  Also the path displayed in project SDK s under 1 7 SDK is correct path to java 1 7 installation   Even when I run java -version in terminal  it tells me I m running on java 1 7   I have tried to set JAVA HOME env variable to this    Library Java JavaVirtualMachines jdk1 7 0 25 jdk Contents Home   The error does not go away   How do I eliminate the error

User · Answer

Latest Android Studio 1 4   Click File- Project Structure- SDK Location- JDK Location   You could also set individual module JDK Version compatibility by going to the Module  below the SDK Location   and edit the Source Compatibility accordingly   note  this only applies to Android Module

User · Answer

Go into your Gradle and look for sourceCompatibility and change it from 1 6 to 7  That worked for me at least   You can also go into your module settings and set the Source Target Compatibility to 1 7   Module settings window  That will produce the following code in your Gradle   compileOptions       sourceCompatibility JavaVersion VERSION 1 7     targetCompatibility JavaVersion VERSION 1 7

User · Answer

Always use latest SDK version to build   compileSdkVersion 23   It does not affect runtime behavior   but give you latest programming features

User · Answer

Right click on your project   Open Module Setting   Select  Project  in  Project Setting  section  Change the Project SDK to latest may be API 21  and Project language level to 7

User · Answer

At current  Android doesn t support Java 7  only Java 6  New features in Java 7 such as the diamond syntax are therefore not currently supported  Finding sources to support this isn t easy  but I could find that the Dalvic engine is built upon a subset of Apache Harmony which only ever supported Java up to version 6  And if you check the system requirements for developing Android apps it also states that at least JDK 6 is needed  though this of course isn t real proof  just an indication   And this says pretty much the same as I have  If I find anything more substancial  I ll add it   Edit  It seems Java 7 support has been added since I originally wrote this answer  check the answer by Sergii Pechenizkyi

User · Answer

Java 7 support was added at build tools 19  You can now use features like the diamond operator  multi-catch  try-with-resources  strings in switches  etc  Add the following to your build gradle   android       compileSdkVersion 19     buildToolsVersion  19 0 0       defaultConfig           minSdkVersion 7         targetSdkVersion 19            compileOptions           sourceCompatibility JavaVersion VERSION 1 7         targetCompatibility JavaVersion VERSION 1 7           Gradle 1 7   Android gradle plugin 0 6   are required   Note  that only try with resources require minSdkVersion 19  Other features works on previous platforms   Link to android gradle plugin user guide  Link to see how source vs target are different

User · Answer

Maybe these answers above are old but with the new Android Studios 1  you do the following to see the module to run on 1 7  or 1 6 if you prefer   Click File --  Project Structure  Select the module you want to run and then under  Source Compatibility  and  Target Compatibility   select 1 7  Click  OK

User · Answer

You can change it in new Android studio version 0 8 X   FIle-  Other Settings -  Default Settings -  Compiler  Expand it by clicking left arrow  -  Java Compiler -  You can change the Project bytecode version here

[java] How to set -source 1.7 in Android Studio and Gradle

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