An abstract is one that is unfinished. The variable parts could be abstract classes. A protected class is one created with default properties. Unless otherwise specified, all classes have default properties. That is, only classes in the same package can make use of a protected class.
Packages are collections of related classes.
For instance, FantasyRolePlayingSystem , AcmeInsurancePolicies , and BrokenPoliticalPromises could be examples of packages. The class TwentyYearLevelTerm would be in the AcmeInsurancePolicies package. We do not use the new constructor for this instance of class declaration. In the next lesson we will begin writing the applet. Java and java Development Kit are trademarks of Sun Microsystems.