| The following topics were discussed in this chapter: -
basic language elements : identifiers, keywords, literals, white spaces, and comments -
primitive data types : integral, floating-point, and Boolean -
converting numbers between decimal, octal, and hexadecimal systems -
lifetime of fields and local variables -
declaration and initialization of variables, including reference variables -
usage of default values for fields -
structure of a valid Java source file -
declaration of the main() method whose execution starts the application |