rostyslav/Alerter.java

## Alerter.java
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JWindow;
import javax.swing.UIManager;

public class Alerter extends JWindow
{
   private Dimension screenSize;
   private JLabel messageLabel;
   private final static int ERROR_MESSAGE = 0;
   private final static int INFORMATION_MESSAGE = 1;
   private final static int WARNING_MESSAGE = 2;
   private final static int QUESTION_MESSAGE = 3;

   public Alerter()
   {
       //super("Alert");
       screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
       //setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
       // setResizable(false);
       messageLabel = new JLabel("", JLabel.CENTER);
       setLayout(new BorderLayout());
       setAlwaysOnTop(true);
       getContentPane().add(messageLabel, BorderLayout.CENTER);
       JButton button = new JButton("<HTML><FONT FACE = Tahoma>DISMISS</FONT></HTML>");
       JPanel buttonPanel = new JPanel();
       buttonPanel.setLayout(new FlowLayout());
       buttonPanel.add(button);
       getContentPane().add(buttonPanel, BorderLayout.SOUTH);
       button.addActionListener(new ActionListener()
       {
           public void actionPerformed(ActionEvent e)
           {
               for (int i = 100; i > 0; i--)
               {
                   setBounds((screenSize.width - 400), (screenSize.height - i) - 30, 400, 100);
                   try
                   {
                       Thread.sleep(1/1000);
                   }
                   catch (Exception er)
                   {

                   }

                   setVisible(true);
               }
               setVisible(false);
               dispose();
               System.exit(0);
           }
       });
   }
   public void alert(String message, int messageType)
   {
       switch (messageType)
       {
           case 0: // ERROR_MESSAGE
           {
               showError(message);
           }
           break;
           case 1: // INFORMATION_MESSAGE
           {
               showInfo(message);
           }
           break;
           case 2: //WARNING_MESSAGE
           {
               showWarning(message);
           }
           break;
           case 3: //QUESTION_MESSAGE
           {
               askQuestion(message);
           }
           break;
           default:
           {}
           break;
       }
   }
   private void showWarning(String message)
   {
       messageLabel.setText("<HTML><FONT COLOR = YELLOW FACE = Tahoma>" + message + "</FONT></HTML>");
       try
       {
           UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
           for (int i = 0; i < 100; i++)
           {
               setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
               Thread.sleep(1/1000);
               setVisible(true);
           }
           Thread.sleep(10000);
           for (int i = 100; i > 0; i--)
           {
               setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
               Thread.sleep(1/1000);
               setVisible(true);
           }
       }
       catch (Exception e)
       {}
       finally
       {
           setVisible(false);
           dispose();
       }
   }
   private void showInfo(String message)
   {
       messageLabel.setText("<HTML><FONT COLOR = BLUE FACE = Tahoma>" + message + "</FONT></HTML>");
       try
       {
           UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
           for (int i = 0; i < 100; i++)
           {
               setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
               Thread.sleep(1/1000);
               setVisible(true);
           }
           Thread.sleep(10000);
           for (int i = 100; i > 0; i--)
           {
               setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
               Thread.sleep(1/1000);
               setVisible(true);
           }
       }
       catch (Exception e)
       {}
       finally
       {
           setVisible(false);
           dispose();
       }
   }
   private void showError(String message)
   {
       messageLabel.setText("<HTML><FONT COLOR = RED FACE = Tahoma>" + message + "</FONT></HTML>");
       try
       {
           UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
           for (int i = 0; i < 100; i++)
           {
               setBounds((screenSize.width - 400), (screenSize.height - i) - 30, 400, 100);
               Thread.sleep(1/1000);
               setVisible(true);
           }
           Thread.sleep(10000);
           for (int i = 100; i > 0; i--)
           {
               setBounds((screenSize.width - 400), (screenSize.height - i) - 30, 400, 100);
               Thread.sleep(1/1000);
               setVisible(true);
           }
       }
       catch (Exception e)
       {}
       finally
       {
           setVisible(false);
           dispose();
       }
   }
   private void askQuestion(String message)
   {
       messageLabel.setText("<HTML><FONT COLOR = GREEN FACE = Tahoma>" + message + "</FONT></HTML>");
       try
       {
           UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
           for (int i = 0; i < 100; i++)
           {
               setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
               Thread.sleep(1/1000);
               setVisible(true);
           }
           Thread.sleep(10000);
           for (int i = 100; i > 0; i--)
           {
               setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
               Thread.sleep(1/1000);
               setVisible(true);
           }
       }
       catch (Exception e)
       {}
       finally
       {
           setVisible(false);
           dispose();
       }
   }
   public static void main(String[] args)
   {
       Alerter alerter = new Alerter();
       alerter.alert("Hello World", Alerter.ERROR_MESSAGE);
   }
}
	import java.awt.BorderLayout;
	import java.awt.Dimension;
	import java.awt.FlowLayout;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import javax.swing.JButton;
	import javax.swing.JLabel;
	import javax.swing.JPanel;
	import javax.swing.JWindow;
	import javax.swing.UIManager;

	public class Alerter extends JWindow
	{
	private Dimension screenSize;
	private JLabel messageLabel;
	private final static int ERROR_MESSAGE = 0;
	private final static int INFORMATION_MESSAGE = 1;
	private final static int WARNING_MESSAGE = 2;
	private final static int QUESTION_MESSAGE = 3;

	public Alerter()
	{
	//super("Alert");
	screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
	//setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
	// setResizable(false);
	messageLabel = new JLabel("", JLabel.CENTER);
	setLayout(new BorderLayout());
	setAlwaysOnTop(true);
	getContentPane().add(messageLabel, BorderLayout.CENTER);
	JButton button = new JButton("<HTML><FONT FACE = Tahoma>DISMISS</FONT></HTML>");
	JPanel buttonPanel = new JPanel();
	buttonPanel.setLayout(new FlowLayout());
	buttonPanel.add(button);
	getContentPane().add(buttonPanel, BorderLayout.SOUTH);
	button.addActionListener(new ActionListener()
	{
	public void actionPerformed(ActionEvent e)
	{
	for (int i = 100; i > 0; i--)
	{
	setBounds((screenSize.width - 400), (screenSize.height - i) - 30, 400, 100);
	try
	{
	Thread.sleep(1/1000);
	}
	catch (Exception er)
	{

	}

	setVisible(true);
	}
	setVisible(false);
	dispose();
	System.exit(0);
	}
	});
	}
	public void alert(String message, int messageType)
	{
	switch (messageType)
	{
	case 0: // ERROR_MESSAGE
	{
	showError(message);
	}
	break;
	case 1: // INFORMATION_MESSAGE
	{
	showInfo(message);
	}
	break;
	case 2: //WARNING_MESSAGE
	{
	showWarning(message);
	}
	break;
	case 3: //QUESTION_MESSAGE
	{
	askQuestion(message);
	}
	break;
	default:
	{}
	break;
	}
	}
	private void showWarning(String message)
	{
	messageLabel.setText("<HTML><FONT COLOR = YELLOW FACE = Tahoma>" + message + "</FONT></HTML>");
	try
	{
	UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
	for (int i = 0; i < 100; i++)
	{
	setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
	Thread.sleep(1/1000);
	setVisible(true);
	}
	Thread.sleep(10000);
	for (int i = 100; i > 0; i--)
	{
	setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
	Thread.sleep(1/1000);
	setVisible(true);
	}
	}
	catch (Exception e)
	{}
	finally
	{
	setVisible(false);
	dispose();
	}
	}
	private void showInfo(String message)
	{
	messageLabel.setText("<HTML><FONT COLOR = BLUE FACE = Tahoma>" + message + "</FONT></HTML>");
	try
	{
	UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
	for (int i = 0; i < 100; i++)
	{
	setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
	Thread.sleep(1/1000);
	setVisible(true);
	}
	Thread.sleep(10000);
	for (int i = 100; i > 0; i--)
	{
	setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
	Thread.sleep(1/1000);
	setVisible(true);
	}
	}
	catch (Exception e)
	{}
	finally
	{
	setVisible(false);
	dispose();
	}
	}
	private void showError(String message)
	{
	messageLabel.setText("<HTML><FONT COLOR = RED FACE = Tahoma>" + message + "</FONT></HTML>");
	try
	{
	UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
	for (int i = 0; i < 100; i++)
	{
	setBounds((screenSize.width - 400), (screenSize.height - i) - 30, 400, 100);
	Thread.sleep(1/1000);
	setVisible(true);
	}
	Thread.sleep(10000);
	for (int i = 100; i > 0; i--)
	{
	setBounds((screenSize.width - 400), (screenSize.height - i) - 30, 400, 100);
	Thread.sleep(1/1000);
	setVisible(true);
	}
	}
	catch (Exception e)
	{}
	finally
	{
	setVisible(false);
	dispose();
	}
	}
	private void askQuestion(String message)
	{
	messageLabel.setText("<HTML><FONT COLOR = GREEN FACE = Tahoma>" + message + "</FONT></HTML>");
	try
	{
	UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
	for (int i = 0; i < 100; i++)
	{
	setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
	Thread.sleep(1/1000);
	setVisible(true);
	}
	Thread.sleep(10000);
	for (int i = 100; i > 0; i--)
	{
	setBounds((screenSize.width - 250), (screenSize.height - i) - 30, 250, 100);
	Thread.sleep(1/1000);
	setVisible(true);
	}
	}
	catch (Exception e)
	{}
	finally
	{
	setVisible(false);
	dispose();
	}
	}
	public static void main(String[] args)
	{
	Alerter alerter = new Alerter();
	alerter.alert("Hello World", Alerter.ERROR_MESSAGE);
	}
	}