Instance and Class Members

• Any member (variable, method, or constant) of a class that is not declared static is an instance member:

  • They are associated with individual objects
  • In a message, the receiver is specified by a variable or expression that evaluates to an object

• Any member declared static is a class member, shared by all objects of the class:

  • In a message, the receiver is specified by a class name
  • Example: BorderLayout.NORTH
  • Example: JOptionPane.showInputDialog(msg);