Java by API/java.awt/Toolkit

Toolkit: addAWTEventListener(AWTEventListener listener, long eventMask)

   <source lang="java">
 

import java.awt.AWTEvent; import java.awt.Toolkit; import java.awt.event.AWTEventListener; import java.awt.event.ActionEvent; import java.awt.event.ruponentEvent; import java.awt.event.WindowEvent; import javax.swing.AbstractAction; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; public class Main implements AWTEventListener {

 public void eventDispatched(AWTEvent evt) {
   if (evt.getID() == WindowEvent.WINDOW_OPENED) {
     ComponentEvent cev = (ComponentEvent) evt;
     if (cev.getComponent() instanceof JFrame) {
       System.out.println("event: " + evt);
       JFrame frame = (JFrame) cev.getComponent();
       loadSettings(frame);
     }
   }
 }
 public static void loadSettings(JFrame frame) {
   System.out.println("loading");
 }
 public static void saveSettings() {
   System.out.println("saving");
 }
 public static void main(String[] args) throws Exception {
   Toolkit tk = Toolkit.getDefaultToolkit();
   final Main main = new Main();
   tk.addAWTEventListener(main, AWTEvent.WINDOW_EVENT_MASK);
   final JFrame frame = new JFrame("");
   frame.setName("your frame");
   JMenuBar mb = new JMenuBar();
   JMenu menu = new JMenu("File");
   menu.add(new AbstractAction("Quit") {
     public void actionPerformed(ActionEvent evt) {
       try {
         main.saveSettings();
         System.exit(0);
       } catch (Exception ex) {
         System.out.println(ex);
       }
     }
   });
   mb.add(menu);
   frame.setJMenuBar(mb);
   frame.pack();
   frame.setVisible(true);
 }

}

 </source>
   
  
 
  

Toolkit: beep()

   <source lang="java">

import java.awt.Toolkit; public class MainClass {

 public static void main(String[] args) {
   Toolkit tk = Toolkit.getDefaultToolkit();
   tk.beep();
 }

}

 </source>
   
  
 
  

Toolkit: createImage(byte[] img)

   <source lang="java">

import java.awt.Image; import java.awt.Toolkit; import java.io.BufferedInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; public final class MainClass {

 private MainClass() {
 }
 public static Image getImage(Class relativeClass, String filename) {
   Image returnValue = null;
   InputStream is = relativeClass.getResourceAsStream(filename);
   if (is != null) {
     BufferedInputStream bis = new BufferedInputStream(is);
     ByteArrayOutputStream baos = new ByteArrayOutputStream();
     try {
       int ch;
       while ((ch = bis.read()) != -1) {
         baos.write(ch);
       }
       returnValue = Toolkit.getDefaultToolkit().createImage(
           baos.toByteArray());
     } catch (IOException exception) {
       System.err.println("Error loading: " + filename);
     }
   }
   return returnValue;
 }

}

 </source>
   
  
 
  

Toolkit: getColorModel()

   <source lang="java">

/*

* Output:

Color model = DirectColorModel: rmask=ff0000 gmask=ff00 bmask=ff amask=0

*/

import java.awt.Toolkit; public class MainClass {

 public static void main(String[] args) {
   Toolkit tk = Toolkit.getDefaultToolkit();
   System.out.println("Color model = " + tk.getColorModel());
 }

}

 </source>
   
  
 
  

Toolkit: getDefaultToolkit()

   <source lang="java">

/*

* Output:
*/

import java.awt.Toolkit; public class MainClass {

 public static void main(String[] args) {
   Toolkit tk = Toolkit.getDefaultToolkit();
   tk.beep();
 }

}

 </source>
   
  
 
  

Toolkit: getImage(URL url)

   <source lang="java">

import java.awt.Image; import java.awt.MediaTracker; import java.awt.Toolkit; import java.net.MalformedURLException; import java.net.URL; import javax.swing.JPanel; public class MainClass extends JPanel {

 public void load() throws MalformedURLException {
   URL url = new URL("image address");
   Image im = Toolkit.getDefaultToolkit().getImage(url);
   MediaTracker mt = new MediaTracker(this);
   mt.addImage(im, 0);
   try {
     mt.waitForID(0);
   } catch (InterruptedException e) {
     System.err.println("Unexpected interrupt in waitForID!");
     return;
   }
   if (mt.isErrorID(0)) {
     System.err.println("Couldn"t load image file " + url);
     return;
   }
 }
 public static void main(String[] args) {
 }

}

 </source>
   
  
 
  

Toolkit: getMenuShortcutKeyMask()

   <source lang="java">

/*

* Output:

Menu shortcut key mask = 2

*/

import java.awt.Toolkit; public class MainClass {

 public static void main(String[] args) {
   Toolkit tk = Toolkit.getDefaultToolkit();
   System.out.println("Menu shortcut key mask = "
       + tk.getMenuShortcutKeyMask());
 }

}

 </source>
   
  
 
  

Toolkit: getProperty(String key, String def)

   <source lang="java">

/*

* Output:

AWT.control = Ctrl

*/

import java.awt.Toolkit; public class MainClass {

 public static void main(String[] args) {
   Toolkit tk = Toolkit.getDefaultToolkit();
   System.out.println("AWT.control = " + tk.getProperty("AWT.control", ""));
 }

}

 </source>
   
  
 
  

Toolkit: getScreenResolution()

   <source lang="java">

/*

* Output:

Screen resolution = 96

*/

import java.awt.Toolkit; public class MainClass {

 public static void main(String[] args) {
   Toolkit tk = Toolkit.getDefaultToolkit();
   System.out.println("Screen resolution = " + tk.getScreenResolution());
 }

}

 </source>
   
  
 
  

Toolkit: getScreenSize()

   <source lang="java">

/*

* Output:

Screen width = 1280 Screen height = 1024

*/

import java.awt.Dimension; import java.awt.Toolkit; public class MainClass {

 public static void main(String[] args) {
   Toolkit tk = Toolkit.getDefaultToolkit();
   Dimension d = tk.getScreenSize();
   System.out.println("Screen width = " + d.width);
   System.out.println("Screen height = " + d.height);
 }

}

 </source>
   
  
 
  

Toolkit: getSystemClipboard()

   <source lang="java">

/*

* Output:

System clipboard = sun.awt.windows.WClipboard@1f6f0bf */ import java.awt.Toolkit; public class MainClass {

 public static void main(String[] args) {
   Toolkit tk = Toolkit.getDefaultToolkit();
   System.out.println("System clipboard = " + tk.getSystemClipboard());
 }

}

 </source>
   
  
 
  

Toolkit: getSystemEventQueue()

   <source lang="java">

/*

* Output:
System event queue = java.awt.EventQueue@e5855a 
*/

import java.awt.Toolkit; public class MainClass {

 public static void main(String[] args) {
   Toolkit tk = Toolkit.getDefaultToolkit();
   System.out.println("System event queue = " + tk.getSystemEventQueue());
 }

}

 </source>
   
  
 
  

Toolkit: prepareImage(Image image, int width, int height, ImageObserver observer)

   <source lang="java">

import java.awt.Image; import java.awt.Rectangle; import java.awt.Toolkit; import java.awt.image.ImageObserver; public class MainClass {

 public static void main(String[] args) {
   ImageObserver myObserver = new ImageObserver() {
     public boolean imageUpdate(Image image, int flags, int x, int y, int width, int height) {
       if ((flags & HEIGHT) != 0)
         System.out.println("Image height = " + height);
       if ((flags & WIDTH) != 0)
         System.out.println("Image width = " + width);
       if ((flags & FRAMEBITS) != 0)
         System.out.println("Another frame finished.");
       if ((flags & SOMEBITS) != 0)
         System.out.println("Image section :" + new Rectangle(x, y, width, height));
       if ((flags & ALLBITS) != 0)
         System.out.println("Image finished!");
       if ((flags & ABORT) != 0)
         System.out.println("Image load aborted...");
       return true;
     }
   };
   Toolkit toolkit = Toolkit.getDefaultToolkit();
   Image img = toolkit.getImage(args[0]);
   toolkit.prepareImage(img, -1, -1, myObserver);
 }

}

 </source>