public class CoolButtonController extends MouseAdapter implements ItemListener
Constructor and Description |
---|
CoolButtonController(AbstractButton button)
Creates a new instance of CoolButtonController
|
Modifier and Type | Method and Description |
---|---|
static void |
addCoolButtonController(AbstractButton button) |
boolean |
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
int |
hashCode()
Returns a hash code value for the object.
|
void |
itemStateChanged(ItemEvent e)
Invoked when an item has been selected or deselected by the user.
|
void |
mouseEntered(MouseEvent e)
Invoked when the mouse enters a component.
|
void |
mouseExited(MouseEvent e)
Invoked when the mouse exits a component.
|
static void |
removeCoolButtonController(AbstractButton button) |
mouseClicked, mouseDragged, mouseMoved, mousePressed, mouseReleased, mouseWheelMoved
public CoolButtonController(AbstractButton button)
public void mouseEntered(MouseEvent e)
mouseEntered
in interface MouseListener
mouseEntered
in class MouseAdapter
public void mouseExited(MouseEvent e)
mouseExited
in interface MouseListener
mouseExited
in class MouseAdapter
public void itemStateChanged(ItemEvent e)
itemStateChanged
in interface ItemListener
public static void addCoolButtonController(AbstractButton button)
public static void removeCoolButtonController(AbstractButton button)
public int hashCode()
java.util.Hashtable
.
The general contract of hashCode
is:
hashCode
method on each of
the two objects must produce the same integer result.
Object.equals(java.lang.Object)
method, then calling the hashCode method on each of the
two objects must produce distinct integer results. However, the
programmer should be aware that producing distinct integer results
for unequal objects may improve the performance of hashtables.
As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the JavaTM programming language.)
hashCode
in class Object
Object.equals(java.lang.Object)
,
Hashtable
public boolean equals(Object obj)
The equals
method implements an equivalence relation:
x
,
x.equals(x)
should return true
.
x
and
y
, x.equals(y)
should return
true
if and only if y.equals(x)
returns
true
.
x
,
y
, and z
, if x.equals(y)
returns true
and y.equals(z)
returns
true
, then x.equals(z)
should return
true
.
x
and y
, multiple invocations of x.equals(y)
consistently return true
or consistently return
false
, provided no information used in
equals
comparisons on the object is modified.
x
,
x.equals(null)
should return false
.
The equals method for class Object
implements
the most discriminating possible equivalence relation on objects;
that is, for any reference values x
and y
,
this method returns true
if and only if x
and
y
refer to the same object (x==y
has the
value true
).
Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.
equals
in class Object
obj
- the reference object with which to compare.true
if this object is the same as the obj
argument; false
otherwise.hashCode()
,
Hashtable
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