For now, it is probably best to avoid creating interface-based applications, because they don’t compile with a pre-Java 8 compiler and have the potential to confuse Java beginners.

Java 8 extended interface types to also support default and static method declarations. Consequently, you can declare the main() entry-point method as an interface member, which leads to creating ...

The java.util.SortedSet is a specialization of the Set interface. It represents a set where the elements are sorted. The Set interface does not impose any particular order on its elements.

1. The Java compiler: javac The javac utility is the most important command-line interface (CLI) tool you will find in the JDK's bin directory. This is the Java compiler, and whether you use Maven, ...