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    <p>The answer depends on the definition of screen. Do you want the default screen bounds or a specific screen bounds?</p> <p>I use the following (&amp; variations of it) to determine the screen bounds for an individual screen</p> <pre><code>public static GraphicsDevice getGraphicsDeviceAt(Point pos) { GraphicsDevice device = null; GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); GraphicsDevice lstGDs[] = ge.getScreenDevices(); ArrayList&lt;GraphicsDevice&gt; lstDevices = new ArrayList&lt;GraphicsDevice&gt;(lstGDs.length); for (GraphicsDevice gd : lstGDs) { GraphicsConfiguration gc = gd.getDefaultConfiguration(); Rectangle screenBounds = gc.getBounds(); if (screenBounds.contains(pos)) { lstDevices.add(gd); } } if (lstDevices.size() == 1) { device = lstDevices.get(0); } return device; } public static Rectangle getScreenBoundsAt(Point pos) { GraphicsDevice gd = getGraphicsDeviceAt(pos); Rectangle bounds = null; if (gd != null) { bounds = gd.getDefaultConfiguration().getBounds(); } return bounds; } </code></pre> <p>The basic idea is to provide a screen location and find the screen that matches it. I have variations the take a <code>Component</code> or <code>Window</code> but essentially, it boils down to this.</p> <p>From a <code>MouseEvent</code>, you can obtain the screen coordinates simply enough with a call to <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/event/MouseEvent.html#getLocationOnScreen%28%29" rel="nofollow">MouseEvent.getLocationOnScreen</a></p> <p>Now, from your question, it sounds like you want to know the entire "virtual" screen bounds (I might be wrong), but I use this method (actually I use it to create multi-monitor wallpapers on the fly, but that's another question)</p> <pre><code>public static Rectangle getVirtualScreenBounds() { GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); GraphicsDevice lstGDs[] = ge.getScreenDevices(); Rectangle bounds = new Rectangle(); for (GraphicsDevice gd : lstGDs) { bounds.add(gd.getDefaultConfiguration().getBounds()); } return bounds; } </code></pre> <p>Basically, it just walks all the screen devices and add's there regions together to form a "virtual" rectangle. You could use the same concept to return the bounds of each screen device as an array instead.</p>
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