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POHow to get the screen DPI in java?
 

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  1. POHow to get the screen DPI in java?
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    <p>I am developing an app for which I need the screen DPI.. I checked a few forums and got a code snippet which goes as follows:</p> <pre><code>Dimension screen = java.awt.Toolkit.getDefaultToolkit().getScreenSize(); System.out.println("screen width: "+screen.getWidth()); System.out.println("screen height: "+screen.getHeight()); int pixelPerInch=java.awt.Toolkit.getDefaultToolkit().getScreenResolution(); System.out.println("pixelPerInch: "+pixelPerInch); double height=screen.getHeight()/pixelPerInch; double width=screen.getWidth()/pixelPerInch; double x=Math.pow(height,2); double y=Math.pow(width,2); </code></pre> <p>But whatever be the value of my screen resolution, the <code>pixelPerInch</code> value remains the same at 96. What is the problem with the code??</p> <p>I got another <code>swt</code> code for the same thing which goes as follows:</p> <pre><code> import org.eclipse.swt.graphics.Device; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass { public void run() { Display display = new Display(); Shell shell = new Shell(display); shell.setText("Display Device"); createContents(shell); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) { display.sleep(); } } display.dispose(); } private void createContents(Shell shell) { Device device = shell.getDisplay(); System.out.println("getBounds(): "+ device.getBounds()); System.out.println("getClientArea(): "+device.getClientArea()); System.out.println("getDepth(): "+device.getDepth()); System.out.println("getDPI(): "+device.getDPI()); device.setWarnings(true); System.out.println("Warnings supported: "+device.getWarnings()); } public static void main(String[] args) { new MainClass().run(); } </code></pre> <p>But again here also whatever be my screen resolution, the <code>getDPI()</code> returns the same value of 96.. What is going wrong?? Is my code wrong or am I interpreting it in a wrong way??</p>
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    1. COpossible duplicate of [How to "correctly" detect DPI of display with Java?](http://stackoverflow.com/questions/4707756/how-to-correctly-detect-dpi-of-display-with-java)
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