Try-with-Resources was not added with Java_9

[SvenJunge]

In the article it says T-W-R was added with Java_9. Thats wrong, it was added with Java_7. So this file https://github.com/thombergs/code-examples/blob/1f37a81b90003c35beed6216432f689936917cb1/core-java/versions/src/main/java/com/reflectoring/io/java9/TryWithResources.java should be deleted (or al least be moved to s.th. like 'other stuff').

Java_7 release-notes: https://www.oracle.com/java/technologies/javase/jdk7-relnotes.html Info/ read: https://www.baeldung.com/java-try-with-resources