public final class DisplayMode extends Object
DisplayMode class encapsulates the bit depth, height,
width, and refresh rate of a GraphicsDevice. The ability to
change graphics device's display mode is platform- and
configuration-dependent and may not always be available
(see GraphicsDevice.isDisplayChangeSupported()).
For more information on full-screen exclusive mode API, see the Full-Screen Exclusive Mode API Tutorial.
| Modifier and Type | Field and Description |
|---|---|
static int |
BIT_DEPTH_MULTI
Value of the bit depth if multiple bit depths are supported in this
display mode.
|
static int |
REFRESH_RATE_UNKNOWN
Value of the refresh rate if not known.
|
| Constructor and Description |
|---|
DisplayMode(int width,
int height,
int bitDepth,
int refreshRate)
Create a new display mode object with the supplied parameters.
|
| Modifier and Type | Method and Description |
|---|---|
boolean |
equals(DisplayMode dm)
Returns whether the two display modes are equal.
|
boolean |
equals(Object dm)
Indicates whether some other object is "equal to" this one.
|
int |
getBitDepth()
Returns the bit depth of the display, in bits per pixel.
|
int |
getHeight()
Returns the height of the display, in pixels.
|
int |
getRefreshRate()
Returns the refresh rate of the display, in hertz.
|
int |
getWidth()
Returns the width of the display, in pixels.
|
int |
hashCode()
Returns a hash code value for the object.
|
@Native public static final int BIT_DEPTH_MULTI
getBitDepth(),
Constant Field Values@Native public static final int REFRESH_RATE_UNKNOWN
getRefreshRate(),
Constant Field Valuespublic DisplayMode(int width,
int height,
int bitDepth,
int refreshRate)
width - the width of the display, in pixelsheight - the height of the display, in pixelsbitDepth - the bit depth of the display, in bits per
pixel. This can be BIT_DEPTH_MULTI if multiple
bit depths are available.refreshRate - the refresh rate of the display, in hertz.
This can be REFRESH_RATE_UNKNOWN if the
information is not available.BIT_DEPTH_MULTI,
REFRESH_RATE_UNKNOWNpublic int getHeight()
public int getWidth()
public int getBitDepth()
BIT_DEPTH_MULTI if multiple bit depths are supported in
this display mode.BIT_DEPTH_MULTIpublic int getRefreshRate()
REFRESH_RATE_UNKNOWN if the information is not available.REFRESH_RATE_UNKNOWNpublic boolean equals(DisplayMode dm)
public boolean equals(Object dm)
The equals method implements an equivalence relation
on non-null object references:
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
objects 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 non-null 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 Objectdm - the reference object with which to compare.true if this object is the same as the obj
argument; false otherwise.Object.hashCode(),
HashMappublic int hashCode()
HashMap.
The general contract of hashCode is:
hashCode method
must consistently return the same integer, provided no information
used in equals comparisons on the object is modified.
This integer need not remain consistent from one execution of an
application to another execution of the same application.
equals(Object)
method, then calling the 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 hash tables.
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
Java™ programming language.)
hashCode in class ObjectObject.equals(java.lang.Object),
System.identityHashCode(java.lang.Object) Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2025, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.