Chapter 3

1. In Java, a fence operation is what javac does to force a constraint on memory in the form of a barrier instruction. These operations occur before and after the barrier instruction, essentially fencing them in.
2. Project Coin was a feature set of minor changes introduced in Java 7.
3. Starting with Java 9, we can use the @SafeVarargs annotation with private instance methods.
4. Starting with Java 9, the order we list import statements in our classes and files will no longer impact the compilation process.
5. The Java platform includes a set of root certificates in the cacerts keystore.
6. The var identifier is technically a reserved type name.
7. Declarations can be inferred through use of the new var identifier.
8. The underscore character (_) can no longer be used as a legal identifier name.
9. The java.util.concurrent.atomic package is a collection of 12 subclasses that support operations...