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<TITLE>Setting the Screen Size, Refresh Rate, or Number of Colors (Java Developers Almanac Example)
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<h1>The Java Developers Almanac 1.4</h1>
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<B><A HREF="../java.awt/pkg.html#The Screen">The Screen</A></B><font color="#666666" class="xsmall-font">
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<h3>e605. Setting the Screen Size, Refresh Rate, or Number of Colors</h3>
Typically, the properties of the screen can only be changed while in
full-screen mode (see <a href="../java.awt/screen_FullWin.html" class="eglink"><b>e601</b> Enabling Full-Screen Mode</a>. See also
<a href="../java.awt/screen_GetDispModes.html" class="eglink"><b>e603</b> Getting the Available Screen Sizes, Refresh Rates, and Number of Colors</a>.
<pre> // Determine if the display mode can be changed
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gs = ge.getDefaultScreenDevice();
// Determine if the display mode can be changed
boolean canChg = gs.isDisplayChangeSupported();
if (canChg) {
// Change the screen size and number of colors
DisplayMode displayMode = gs.getDisplayMode();
int screenWidth = <font color="#0066ff"><i>640</i></font>;
int screenHeight = <font color="#0066ff"><i>480</i></font>;
int bitDepth = <font color="#0066ff"><i>8</i></font>;
displayMode = new DisplayMode(
screenWidth, screenHeight, bitDepth, displayMode.getRefreshRate());
try {
gs.setDisplayMode(displayMode);
} catch (Throwable e) {
// Desired display mode is not supported; leave full-screen mode
gs.setFullScreenWindow(null);
}
} else if (gs.getFullScreenWindow() != null) {
// Try enabling full-screen mode;
// see <a href="../java.awt/screen_FullWin.html" class="eglink"><b>e601</b> Enabling Full-Screen Mode</a>
} else {
// Display mode cannot be changed
}
</pre>
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<b>Related Examples</b></font></td>
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e598. <a class="eglink" href="screen_ScreenSize.html?l=rel">
Getting the Screen Size
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e599. <a class="eglink" href="screen_CenterScreen.html?l=rel">
Centering a Frame, Window, or Dialog on the Screen
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e600. <a class="eglink" href="screen_NumScreens.html?l=rel">
Getting the Number of Screens
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e601. <a class="eglink" href="screen_FullWin.html?l=rel">
Enabling Full-Screen Mode
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e602. <a class="eglink" href="screen_Flip.html?l=rel">
Double-Buffering in Full-Screen Mode
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e603. <a class="eglink" href="screen_GetDispModes.html?l=rel">
Getting the Available Screen Sizes, Refresh Rates, and Number of Colors
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e604. <a class="eglink" href="screen_ScreenBits.html?l=rel">
Getting the Current Screen Refresh Rate and Number of Colors
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See also:
<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Colors">
Colors
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Components">
Components
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Containers">
Containers
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Cursors">
Cursors
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Drawing">
Drawing
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Events">
Events
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Focus">
Focus
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Frames">
Frames
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#GridBagLayout">
GridBagLayout
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Images">
Images
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Shapes">
Shapes
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Simulating%20Events">
Simulating Events
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<a class="eglink" href="/egs/java.awt/pkg.html?l=rel#Text">
Text
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