Java Foundation Classes in a Nutshell

public void setLabel(String label);

Implements:ItemSelectable default:null1.1 public Object[ ] getSelectedObjects();

default:falsepublic boolean getState();

public void setState(boolean state);

// Methods Implementing ItemSelectable

synchronized1.1 public void addItemListener(java.awt.e vent.ItemListener l);

default:null1.1 public Object[ ] getSelectedObjects();

synchronized1.1 public void removeItemListener(java.awt.e vent.ItemListener l);

// Public Methods Overriding Component

public void addNotify();

// Protected Methods Overriding Component

protected String paramString();

1.1 protected void processEvent(AWTEvent e);

// Protected Instance Methods

1.1 protected void processItemEvent(java.awt.e vent.ItemEvent e);

}

Hierar chy: Object→ Component(java.awt.image.ImageObser ver, MenuContainer, Serializable)→

Checkbox(ItemSelectable)

Passed To: CheckboxGroup.{setCur rent(), setSelectedCheckbox()}, Toolkit.createCheckbox()

Retur ned By: CheckboxGroup.{getCur rent(), getSelectedCheckbox()}

CheckboxGroup Ja va 1.0

java.awt serializable PJ1.1

A CheckboxGroup object enforces mutual exclusion (also known as radio button behav-

ior) among any number of Checkbox buttons. A Checkbox component can specify a Check-

boxGroup object when created or with its setCheckboxGroup() method. If a Checkbox within

a CheckboxGroup object is selected, the CheckboxGroup ensur es that the previously selected

Checkbox becomes unselected. ...