Error java javacTask source release 8 requires target release 1 8

Question

Using IntelliJ IDE can t compile any projects  Screenshots of settings below   Used JDK     Project SDK and Language level     Language Level     Anybody have any ideas

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Don t forget to set dependencies for your module

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Many answers regarding Maven are right but you don t have to configure the plugin directly   Like described on the wiki page of the Apache Maven Compiler Plugin you can just set the 2 properties used by the plugin    lt project gt             lt properties gt       lt maven compiler source gt 1 8 lt  maven compiler source gt       lt maven compiler target gt 1 8 lt  maven compiler target gt     lt  properties gt           lt  project gt

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This issue occurs if your module is configured with Annotation processor and other module is not Set the same configuration for all the modules as it wold be cyclic dependency

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I just re-import maven button  then the error disappeared

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I ve just spent a while struggling with the same problem   The only thing that worked for me was not using the built mvn  3 3 9  but pointing it to an external downloaded version  3 5 0   Finally the project opened and everything was good

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Under compiler xml  file you will find     lt bytecodeTargetLevel gt     lt module name  your project name main  target  1 8    gt     lt module name  your project name test  target  1 8    gt   lt  bytecodeTargetLevel gt    and you can change the target value from your old to the new for me i needed to change it from 1 5 to 1 8

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If you are working with Android-studio 1 3  Follow the below steps -  Go to File - Project Structure  Under modules- app-Properties tab  choose Source Compatibility -1 8  and  Target Compatibility - 1 8   And you  are good to go

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You need to go to the   idea compiler xml and change target to required jdk level

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I have checked all of the above but the error still occurs   But reimport all maven Projects  reload button inside Maven Projects panel  works in my case

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I fixed this by going to Project Structure -  Modules  find the module in question  click on Dependencies tab  change Module SDK to Project SDK

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File   Settings   Build  Execution  Deployment   Compiler   Java Compiler Change Target bytecode version to 1 8 of the module that you are working for    If you are using Maven  Add the compiler plugin to pom xml under the top-level project node    lt build gt       lt plugins gt           lt plugin gt               lt groupId gt org apache maven plugins lt  groupId gt               lt artifactId gt maven-compiler-plugin lt  artifactId gt               lt configuration gt                   lt source gt 1 8 lt  source gt                   lt target gt 1 8 lt  target gt               lt  configuration gt           lt  plugin gt       lt  plugins gt   lt  build gt     Hoisted from the comments    Note  If you don t mind reimporting your project  then the only thing you really need to do is change the pom and reimport the project  then IntelliJ will pick up the correct settings and you don t have to manually change them

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Solution of the problem is very simple You have to open  idea compiler xml file on your Idea Project and   You should write appropriate target version

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The quickest way I found    press CTRL   SHIFT   A  For Mac     SHIFT   A  type  java compiler press  ENTER   In the Settings window  set the Target bytecode to 1 8   or 9 for java9

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I fixed it just by changing target compile version to 1 8  Its in   File    Settings    Build  Execution  Deployment    Compiler    Java Compiler

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I fixed it by modify my POM file  Notice the last comment under the highest voted answer    lt plugin gt       lt artifactId gt maven-compiler-plugin lt  artifactId gt       lt version gt 2 3 2 lt  version gt           lt configuration gt               lt source gt 1 8 lt  source gt               lt target gt 1 8 lt  target gt               lt encoding gt UTF-8 lt  encoding gt           lt  configuration gt   lt  plugin gt    The source must matches the target

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With Intellij  using Maven  you must check that Intellij has auto-imported your project   You can check by clicking on the Maven tab on the right of your Editor     If your Project is not here  then add the pom xml file by clicking on     Obviously  the project must also have the relevant  lt build  gt          lt plugin gt           lt groupId gt org apache maven plugins lt  groupId gt           lt artifactId gt maven-compiler-plugin lt  artifactId gt           lt configuration gt               lt source gt 1 8 lt  source gt               lt target gt 1 8 lt  target gt           lt  configuration gt       lt  plugin gt

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This looks like the kind of error that Maven generates when you don t have the compiler plugin configured correctly   Here s an example of a Java 8 compiler config    lt project xmlns  http   maven apache org POM 4 0 0       xmlns xsi  http   www w3 org 2001 XMLSchema-instance       xsi schemaLocation  http   maven apache org POM 4 0 0 http   maven apache org xsd maven-4 0 0 xsd  gt    lt  --     -- gt        lt build gt           lt plugins gt               lt plugin gt                   lt groupId gt org apache maven plugins lt  groupId gt                   lt artifactId gt maven-compiler-plugin lt  artifactId gt                   lt version gt 3 5 1 lt  version gt                   lt configuration gt                       lt source gt 1 8 lt  source gt                       lt target gt 1 8 lt  target gt                   lt  configuration gt               lt  plugin gt           lt  plugins gt       lt  build gt    lt  --     -- gt    lt  project gt

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In my case I fixed this issue by opening  iml file of project  it is located in project root folder and have name same as the name of project  and changing line  lt orderEntry type  jdk  jdkName  1 7  jdkType  JavaSDK    gt  to  lt orderEntry type  jdk  jdkName  1 8  jdkType  JavaSDK    gt    I had everything configured as in others answers here but by some reason Idea updated  iml file incorrectly

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You need to go to Settings and set under the Java compiler the following    also check the Project Settings

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There are two ways to solve this problem    Set settings  File - gt  Settings - gt  Build  Execution  Deployment - gt  Java Compiler    Add a build section to your pom xml

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For me  the problem was about Maven not able to find proper configurations  since these items were specified in parent pom   Changing File -  Settings -  Build  Excecution  Deployment -  Maven -  User Settings file to point to my custom settings with proper repositories fixed the problem that was otherwise hiding   Found out about the problem through Help -  Show log in explorer -  clicking the log file  when previously only got the error in the title and  java lang NullPointerException  in the console

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If none of the other answers work  check your Module SDK   I had this error pop up for me after I had updated the project SDK to 1 8  the Javac compiler to 1 8  etc  The setting that was the problem for me was the  Module SDK     on Linux  Go to File  gt  Project Structure    then in the window that opens  select Modules under Project Settings  Select the module in question from the list and then the Dependencies tab and make sure that Module SDK is set appropriately

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In your Gradle app level file     compileOptions add this two lines  android     compileOptions               sourceCompatibility JavaVersion VERSION 1 8     targetCompatibility JavaVersion VERSION 1 8

[java] Error:java: javacTask: source release 8 requires target release 1.8

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