Error: JAVA_HOME not found in your environment Error: JAVA_HOME not set Error: JAVA_HOME is not set currently Error: JAVA_HOME is not set Error: Java installation exists but JAVA_HOME has not been set ...

The persistence.xml file must be located in a folder named META-INF. It’s not good enough for the persistence.xml file to simply be on the classpath. It must be in the META-INF folder. As with the ...