Class names always start with a capital letter, and objects/variables and methods start with a lower case.
- Classes: Object, Action, Date, GregorianCalendar
- Objects: size (of class Dimension), date (of class Date), name (of class String)
- Variables: year, month, length
- Methods: indexOf, substring
- Constants: BorderLayout.BEFORE_FIRST_LINE, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS
- Method names that start with a verb or action: setVisible, isSelected