Java Messages

• Two forms:

  • <receiver>.<method-name>(<parameter list>)
  • <receiver>.<variable-name>

• <receiver> can be:

  • a variable: c.setValue(4)
  • indexed array expression: myArray[i].setValue(4)
  • any expression that evaluates to an object: System.out.println("...")
  • a class name: BorderLayout.NORTH
  • the last usage is usually in connection with static class variables