Maven Compile java error diamond operator is not supported

Question

i am using maven with eclipse , when Compileling the project it giving the following error

 [INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /D:/copay/CopayMobilePassBook/src/main/java/com/cherry/copay/mpassbook/process/impl/AccountsProcessImpl.java:[17,55] diamond operator is not supported in -source 1.5
  (use -source 7 or higher to enable diamond operator)
[ERROR] /D:/copay/CopayMobilePassBook/src/main/java/com/cherry/copay/mpassbook/process/support/ReversalProcessSupport.java:[89,88] diamond operator is not supported in -source 1.5
  (use -source 7 or higher to enable diamond operator)
[INFO] 2 errors

But installed version of JDK is 8 project -> right click -> properties ->project facts -> java version is 1.8

what is the problem with my maven configuration

http://stackoverflow.com/questions/29258141/maven-compilation-error-use-source-7-or-higher-to-enable-diamond-operator — IntelliJ Amiya, Mar 18 '17 at 07:52
@IntelliJAmiya after maven clean only this problem came .. before that it was working fine — Midnik, Mar 18 '17 at 08:01

score 0 · Accepted Answer · edited May 23 '17 at 11:54

May be maven compiler plugin configuration issues

You can check Stack over flow answer : -

maven-compilation-error-use-source-7-or-higher-to-enable-diamond-operator

You can use proper version of JDK version

<properties>
    <maven-compiler-plugin>3.0</maven-compiler-plugin>
    <jdk-version>1.8</jdk-version>

</properties>

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>${maven-compiler-plugin}</version>
        <configuration>
            <compilerVersion>${jdk-version}</compilerVersion>
            <source>${jdk-version}</source>
            <target>${jdk-version}</target>
        </configuration>
</plugin>

Maven Compile java error diamond operator is not supported

1 Answers1