Check out example codes for "Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.6.1:compile (default-compile) on project a2: Compilation failure [ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?". It will help you in understanding the concepts better.

Code Example 1

set JAVA_HOME=<ABSOLUTE_PATH_TO_JDK>

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