The following text was written to the standard output stream when the HelloWorld.java program was executed from IntelliJ.
/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -javaagent:/opt/intellij-idea-community/lib/idea_rt.jar=45479:/opt/intellij-idea-community/bin -Dfile.encoding=UTF-8 -classpath /home/hzhang5/IdeaProjects/CS1/out/production/CS1:/home/hzhang5/SimplePainter.jar:/home/hzhang5/SimpleComposer.jar:/home/hzhang5/jfugue-4.0.3-with-musicxml.jar greetings.HelloWorld Hello world Process finished with exit code 0