dmolony-DiskBrowser/src/com/bytezone/diskbrowser/utilities/Utility.java

package com.bytezone.diskbrowser.utilities;

import java.awt.Toolkit;

public class Utility
{
  public static boolean hasRetinaDisplay ()
  {
    Object obj =
        Toolkit.getDefaultToolkit ().getDesktopProperty ("apple.awt.contentScaleFactor");
    if (obj instanceof Float)
    {
      Float f = (Float) obj;
      int scale = f.intValue ();
      return (scale == 2);            // 1 indicates a regular mac display.
    }
    return false;
  }
}