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Class programming101.calculBeanz.PlusButton 

java.lang.Object
    |
    +----java.awt.Component
            |
            +----java.awt.Button
                    |
                    +----programming101.calculBeanz.CalculatorButton
                            |
                            +----programming101.calculBeanz.PlusButton
public class PlusButton
extends CalculatorButton
Does calculator addition and subtraction.

Since:
18/03/98
Version:
1.0 (18/03/98)
Author:
© 1998 Peter T. Sander

Constructor Index

o PlusButton()
No-args constructor.

Method Index

o op(double, double, CalculatorButton)
Does calculator addition and subtraction.

Constructors

o PlusButton 
public PlusButton()
No-args constructor.

Methods

o op 
public double op(double cumul,
                 double entry,
                 CalculatorButton lastButton)
Does calculator addition and subtraction.

Parameters:
cumul - cumulator value
entry - newly-entered value
button - previously clicked (not used)
Returns:
new cumulator value
Overrides:
op in class CalculatorButton
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