In the package directive’s absence, those classes and interfaces belong to the unnamed package (the directory the JVM regards as the current directory—the directory where a Java program begins ...

The JDK is the development platform for building Java applications. Learn about different JDK versions, then install a JDK in your development environment and use it to compile a Java program.

Back to Java Basics Packages, Interfaces, and Encapsulation Programming with Abstract Classes and Interfaces Introducing the Graphic User Interface Event Handling in UI Introduction to Java Applets ...