Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.5.1:compile (default-compile) on project

Question

I had a java project which I reconfigured to a Maven project. After reconfiguring and adding most of the dependencies required, I get the following error in console when I run mvn install command. I tried the solution mentioned here on this issue, but it doesnt help

Following are the console logs:

[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building FlockHydraAutomation 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ FlockHydraAutomation ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 2 resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.5.1:compile (default-compile) @ FlockHydraAutomation ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 15 source files to C:\Maven\FlockHydra-Automation\FlockHydraAutomation\target\classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.249 s
[INFO] Finished at: 2017-09-23T13:44:15+05:30
[INFO] Final Memory: 10M/220M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.5.1:compile (default-compile) on project FlockHydraAutomation: Compilation failure
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[ERROR] -> [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

POM File:

<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">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.Flock</groupId>
    <artifactId>FlockHydraAutomation</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>FlockHydraAutomation</name>
    <url>http://maven.apache.org</url>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    <build>
        <sourceDirectory>flockWebclient</sourceDirectory>
        <resources>
            <resource>
                <directory>resources</directory>
                <excludes>
                    <exclude>**/*.java</exclude>
                </excludes>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.5.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Attached is the screenshot of the Java Compiler: Java Compiler

Answer 1

Based on your comment on the previous answer looks like you are indeed pointing to a JDK. So now can you try this, Open Eclipse and goto Windows-> preferences -> Java -> installed JREs, and check if you are pointing to a JRE. If yes, change the path to your JDK and try to run a Maven build again. Hopefully this helps resolve the issue.

Answer 2

You have to make sure, your JAVA_HOME environment variable points to a JDK (not a JRE), as the error mentions.

[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

Execute mvn -version. The output will show, what directory JAVA_HOME point to. Then make sure, this is a JDK by setting the JAVA_HOME variable to a JDK path.