IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath

Question

When I try to make a simple module in IntelliJ it responds with:

Fatal Error: Unable to find package java.lang in classpath or bootclasspath

Answer 1

This worked for me:

In Preferences Build Tools > Maven > Runner > Environment Variables set JAVA_HOME to your JDK home path.

Usually you want to use the same Java JDK you are using in IntelliJ. You can find that under Project Structure > Platform Settings > SDKs under JDK home path.

e.g. /Library/Java/JavaVirtualMachines/jdk1.8.0_66.jdk/Contents/Home