Maven build Compilation error Failed to execute goal org apache maven plugins maven-compiler-plugin 3 1 compile default-compile on project Maven

Question

I have a maven project forked and cloned from a git repo onto my eclipse  It is build on Java 8  The first thing i do is perform a      mvn clean install   But I get following failure message    INFO  Scanning for projects     INFO                                                                            INFO  ------------------------------------------------------------------------  INFO  Building Maven 0 0 1-SNAPSHOT  INFO  ------------------------------------------------------------------------  INFO    INFO  --- maven-clean-plugin 2 5 clean  default-clean    Maven ---  INFO  Deleting  Users vshukla git Prism target  INFO    INFO  --- maven-resources-plugin 2 6 resources  default-resources    Maven ---  WARNING  Using platform encoding  UTF-8 actually  to copy filtered resources  i e  build is platform dependent   INFO  skip non existing resourceDirectory  Users vshukla git Prism src main resources  INFO    INFO  --- maven-compiler-plugin 3 1 compile  default-compile    Maven ---  INFO  Changes detected - recompiling the module   WARNING  File encoding has not been set  using platform encoding UTF-8  i e  build is platform dependent   INFO  Compiling 66 source files to  Users vshukla git Prism target classes  INFO  -------------------------------------------------------------  ERROR  COMPILATION ERROR     INFO  -------------------------------------------------------------  ERROR   Users vshukla git Prism src main java PrenPost scanUtility java  54 52  diamond operator is not supported in -source 1 5    use -source 7 or higher to enable diamond operator   ERROR   Users vshukla git Prism src main java main AppUtility java  87 86  diamond operator is not supported in -source 1 5    use -source 7 or higher to enable diamond operator   ERROR   Users vshukla git Prism src main java PrenPost ComparisionUtility java  58 52  diamond operator is not supported in -source 1 5    use -source 7 or higher to enable diamond operator   INFO  3 errors   INFO  -------------------------------------------------------------  INFO  ------------------------------------------------------------------------  INFO  BUILD FAILURE  INFO  ------------------------------------------------------------------------  INFO  Total time  1 266 s  INFO  Finished at  2017-03-01T12 11 27 05 30  INFO  Final Memory  13M 309M  INFO  ------------------------------------------------------------------------  ERROR  Failed to execute goal org apache maven plugins maven-compiler-plugin 3 1 compile  default-compile  on project Maven  Compilation failure  Compilation failure   ERROR   Users vshukla git Prism src main java PrenPost scanUtility java  54 52  diamond operator is not supported in -source 1 5  ERROR   use -source 7 or higher to enable diamond operator   ERROR   Users vshukla git Prism src main java main AppUtility java  87 86  diamond operator is not supported in -source 1 5  ERROR   use -source 7 or higher to enable diamond operator   ERROR   Users vshukla git Prism src main java PrenPost ComparisionUtility java  58 52  diamond operator is not supported in -source 1 5  ERROR   use -source 7 or higher to enable diamond operator   ERROR  - gt   Help 1   ERROR    ERROR  To see the full stack trace of the errors  re-run Maven with the -e switch   ERROR  Re-run Maven using the -X switch to enable full debug logging   ERROR    ERROR  For more information about the errors and possible solutions  please read the following articles   ERROR   Help 1    http   cwiki apache org confluence display MAVEN MojoFailureException   However  below is the build path details of the project which clearly has JRE - 8 set up    and the compilation set up     No matter how many times I build the project  i get the same error  Even after cleaning the project and refreshing it from eclipse doesn t help  Please guide   UPDATE   After adding the properties to set maven compiler plugin   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        am getting the below error    INFO  Scanning for projects     INFO                                                                            INFO  ------------------------------------------------------------------------  INFO  Building Maven 0 0 1-SNAPSHOT  INFO  ------------------------------------------------------------------------  INFO    INFO  --- maven-clean-plugin 2 5 clean  default-clean    Maven ---  INFO  Deleting  Users vshukla git Prism target  INFO    INFO  --- maven-resources-plugin 2 6 resources  default-resources    Maven ---  WARNING  Using platform encoding  UTF-8 actually  to copy filtered resources  i e  build is platform dependent   INFO  skip non existing resourceDirectory  Users vshukla git Prism src main resources  INFO    INFO  --- maven-compiler-plugin 3 1 compile  default-compile    Maven ---  INFO  Changes detected - recompiling the module   WARNING  File encoding has not been set  using platform encoding UTF-8  i e  build is platform dependent   INFO  Compiling 66 source files to  Users vshukla git Prism target classes  INFO  -------------------------------------------------------------  WARNING  COMPILATION WARNING     INFO  -------------------------------------------------------------  WARNING   Users vshukla git Prism src main java main MainUITabbed java   Users vshukla git Prism src main java main MainUITabbed java uses or overrides a deprecated API   WARNING   Users vshukla git Prism src main java main MainUITabbed java  Recompile with -Xlint deprecation for details   WARNING   Users vshukla git Prism src main java main MainUITabbed java  Some input files use unchecked or unsafe operations   WARNING   Users vshukla git Prism src main java main MainUITabbed java  Recompile with -Xlint unchecked for details   INFO  4 warnings   INFO  -------------------------------------------------------------  INFO  -------------------------------------------------------------  ERROR  COMPILATION ERROR     INFO  -------------------------------------------------------------  ERROR   Users vshukla git Prism src main java main MainUITabbed java  26 22  package com apple eawt does not exist  ERROR   Users vshukla git Prism src main java main MainUITabbed java  93 41  cannot find symbol   symbol  class Application  ERROR   Users vshukla git Prism src main java main MainUITabbed java  93 67  cannot find symbol   symbol  variable Application  INFO  3 errors   INFO  -------------------------------------------------------------  INFO  ------------------------------------------------------------------------  INFO  BUILD FAILURE  INFO  ------------------------------------------------------------------------  INFO  Total time  2 591 s  INFO  Finished at  2017-03-01T13 09 47 05 30  INFO  Final Memory  21M 347M  INFO  ------------------------------------------------------------------------  ERROR  Failed to execute goal org apache maven plugins maven-compiler-plugin 3 1 compile  default-compile  on project Maven  Compilation failure  Compilation failure   ERROR   Users vshukla git Prism src main java main MainUITabbed java  26 22  package com apple eawt does not exist  ERROR   Users vshukla git Prism src main java main MainUITabbed java  93 41  cannot find symbol  ERROR  symbol  class Application  ERROR   Users vshukla git Prism src main java main MainUITabbed java  93 67  cannot find symbol  ERROR  symbol  variable Application  ERROR  - gt   Help 1   ERROR    ERROR  To see the full stack trace of the errors  re-run Maven with the -e switch   ERROR  Re-run Maven using the -X switch to enable full debug logging   ERROR    ERROR  For more information about the errors and possible solutions  please read the following articles   ERROR   Help 1  http   cwiki apache org confluence display MAVEN MojoFailureException   And here is the code snippet giving the compilation error from MainUITabbed class   import com apple eawt Application  public static void main String   args        EventQueue invokeLater new Runnable             public void run                 try                     Application application   Application getApplication       line 93                  ImageIcon imgicon   new ImageIcon getClass   getResource                           ICON jpg                     Image img   imgicon getImage                      application setDockIconImage img                    MainUITabbed frame   new MainUITabbed                    frame setVisible true                 catch  Exception e                    e printStackTrace

User · Answer

Worked by adding this in pom xml   lt properties gt           lt project build sourceEncoding gt UTF-8 lt  project build sourceEncoding 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   Even you have SDK 13 or 14

User · Answer

The below pom xml configuration is making the build successful and make sure project buildpath JRE System library should point to Java8   org apache maven pluginsmaven-compiler-plugin3 7 0                    1 81 8

User · Answer

In case if you are able to compile mvn compile the project successful from terminal but not from Eclipse check out Window   Preferences  Installed JREs  make sure you have selected JRE that is under JDK  check out the paths of 2 different JRE s in pic   as Maven needs JDK to compile you need to add it

User · Answer

I am not able to run my own build on the other suggestions here  I even tried different versions of maven-compiler-plugin  3 1  3 7 0  etc   I made it work adding this    lt testSourceDirectory gt  src test java lt  testSourceDirectory gt    I tried this approach because it seems like the  src test java directory is considered a java class that is why it is compiled the same time as  src test java  So my hunch were right in my case   Maybe it is to others too  so just try this one

User · Answer

Go to the file location where the POM is stored and open cmd  Then type  mvn --v  to check the maven version and java runtime provided  Check runtime attribute and if it is  C  Program Files Java jre1 8 0 191  or even close to a JRE  go to environment variables and add a new  system variable  called  JAVA HOME  with a value  C  Program Files Java jdk1 8 0 191    Reopen the cmd and then  clean install  the project

User · Answer

I had the same problem  the solution was set JAVA HOME in environment variables

User · Answer

Doing this in pom xml file and after updating the project  the problem is gone    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 2 4 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     Update the pom xml under  lt plugin gt  lt  plugin gt   Update your project  Then clean maven and install maven

User · Answer

If your local jdk version is 11 or 9  10  and your project s java source target version is 1 8  and you are using org projectlombok lombok package  then you can try to update its version to 1 16 22 or 1 18 12  like this            lt dependency gt               lt groupId gt org projectlombok lt  groupId gt               lt artifactId gt lombok lt  artifactId gt               lt version gt 1 16 22 lt  version gt           lt  dependency gt    It just solved my issue

User · Answer

This is an irritating error that pops up once in a while   jotting down some steps which help   Writing answer from eclipse perspective as base logic will remain the same whether done by Intellij or command line   Rt click your project -  Maven -  Update project -  Select Force update -  Click OK  Under properties tag   add        lt maven compiler source gt 1 8 lt  maven compiler source gt    lt maven compiler target gt 1 8 lt  maven compiler target gt      In some instances  you will start seeing error as we tried force update saying   failure to transfer X dependency from Y path   resolutions will not be reattempted   bla bla bla   In such case quickly fix it by cd to  m2 repository folder and run following command      for  r  i in    lastUpdated  do del  i

User · Answer

My issues was that I was running mvn compile from a child project directory instead of the parent project

User · Answer

for it was comming because of java version mismatch  so I have corrected it and i am able to build the war file hope it will help someone       lt maven compiler source gt 1 7 lt  maven compiler source gt       lt maven compiler target gt 1 7 lt  maven compiler target gt

User · Answer

Buddy  If every this is up-to-date  even then you are having this problem  then  try running this command from the terminal directly instead of running from eclipse    mvn clean install  and make sure these things     maven is in system path   all maven dependencies are avaialble at   m2 repository    java is in system path

User · Answer

I don t think that IDE is relevant here  After all you re running a Maven and Maven doesn t have a source that will allow to compile the diamond operators  So  I think you should configure maven-compiler-plugin itself   You can read about this here  But in general try to add the following properties    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    and see whether it compiles now in Maven only

User · Answer

lt maven compiler release gt   not source  amp  target  Several of the other Answers show  lt maven compiler source gt   amp   lt maven compiler target gt   Both of these are now supplanted by the simpler single element   lt maven compiler release gt    lt maven compiler release gt 15 lt  maven compiler release gt   So this     lt  --old-school-- gt     lt properties gt       lt project build sourceEncoding gt UTF-8 lt  project build sourceEncoding gt       lt maven compiler source gt 15 lt  maven compiler source gt       lt maven compiler target gt 15 lt  maven compiler target gt     lt  properties gt      becomes     lt  --modern-- gt     lt properties gt       lt project build sourceEncoding gt UTF-8 lt  project build sourceEncoding gt       lt maven compiler release gt 15 lt  maven compiler release gt     lt  properties gt   See Question     maven compiler release    as an replacement for source and target

User · Answer

The error occurred because the code is not for the default compiler used there  Paste this code in effective POM before the root element ends  after declaring dependencies  to change the compiler used  Adjust version as you need    lt dependencies gt       lt  dependencies 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

User · Answer

You should add the code into pom xml like    lt properties gt       lt project build sourceEncoding gt UTF-8 lt  project build sourceEncoding 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

User · Answer

make sure java home path is correct  for my case  java home path is wrong in pom file      lt properties gt           lt java home gt  usr java jdk1 8 0 45 bin javac lt  java home gt     lt  properties 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 verbose gt true lt  verbose gt                         lt fork gt true lt  fork gt                         lt executable gt   java home  lt  executable gt                      lt compilerVersion gt 1 8 lt  compilerVersion gt                      lt source gt 1 8 lt  source gt                      lt target gt 1 8 lt  target gt                    lt  configuration gt                lt  plugin gt

User · Answer

Add the following in your pom xml and do CTRL S  it will automatically build the project   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   Now click on Run as  gt Maven Test  This error will definitely get solved

User · Answer

In my case  it was caused from an incompatibility with OpenJDK 9  which I haven t investigated    If you don t need JDK 9  a temporary work-around would be to purge it from your machine   sudo apt-get remove --purge openjdk-9-jdk openjdk-9-jre  sudo apt-get remove --purge openjdk-9-jdk-headless openjdk-9-jre-headless

User · Answer

I had the same problem and I Changed this   lt configuration gt       lt source gt 1 7 lt  source gt       lt target gt 1 7 lt  target gt    lt  configuration gt    here 1 7 is my JDK version it was solved

User · Answer

Jdk 9 and 10 solution   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   maven-compiler version  lt  version gt               lt configuration gt                   lt source gt   java version  lt  source gt                   lt target gt   java version  lt  target gt                   lt debug gt true lt  debug gt               lt  configuration gt               lt dependencies gt                   lt dependency gt                       lt groupId gt org ow2 asm lt  groupId gt                       lt artifactId gt asm lt  artifactId gt                       lt version gt 6 2 lt  version gt                   lt  dependency gt               lt  dependencies gt           lt  plugin gt    and make sure your maven is pointing to JDK 10 or 9  mvn -v  Apache Maven 3 5 3  3383c37e1f9e9b3bc3df5050c29c8aff9f295297  2018-02-24T14 49 05-05 00  Maven home  C  devplay apache-maven-3 5 3 bin    Java version  10 0 1  vendor  Oracle Corporation Java home  C  Program Files Java jdk-10 0 1 Default locale  en US  platform encoding  Cp1252 OS name   windows 10   version   10 0   arch   amd64   family   windows

[java] Maven build Compilation error : Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project Maven

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