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Thread: program execution with warnings

  1. #1
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    Default program execution with warnings

    can some1 please help with this warning when the program is compiled

    C:\java> javac JVNCclient.java

    Note: JVNCclient.java uses or overrides a deprecated API.
    Note: Recompile with -Xlint:deprecation for details.

    C:\java> javac JVNCclient.java -Xlint
    JVNCclient.java:38: warning: [deprecation] resize(int,int) in java.awt.Component has been deprecated
    resize(WIDTH,HEIGHT-10);
    ^
    JVNCclient.java:181: warning: [deprecation] show() in java.awt.Window has been deprecated
    f.show();
    ^
    JVNCclient.java:17: warning: [serial] serializable class JVNCclient has no definition of serialVersionUID
    public class JVNCclient extends JFrame implements MouseWheelListener
    ^
    3 warnings
    //the main program is as follows
     
    import java.awt.Color;
    import java.awt.FlowLayout;
    import javax.swing.ImageIcon;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import java.awt.*;
    import javax.swing.JPanel;
    import java.awt.event.*;
    import java.net.Socket;
    import java.net.UnknownHostException;
    import java.io.ObjectInputStream;
    import java.io.PrintWriter;
    import javax.swing.JOptionPane;
    import javax.swing.SwingUtilities;
     
     
    public class JVNCclient extends JFrame implements MouseWheelListener
    {
    	private JLabel screen;
    	private ObjectInputStream in;
    	private PrintWriter out;
    	private ScreenThread screenThread;
    	private ImageIcon i;
    	private Socket s;
    	private boolean stopped = false;
     
    	public JVNCclient()
    	{
    		int WIDTH = Toolkit.getDefaultToolkit().getScreenSize().width;
    	    int HEIGHT = Toolkit.getDefaultToolkit().getScreenSize().height;
     
    		setTitle("Remote Desktopcapture");
    		setBackground(Color.white);
    		screen = new JLabel();
    		getContentPane().setLayout(new FlowLayout(FlowLayout.CENTER, 0, 0));	
    		getContentPane().add(screen);
     
    		resize(WIDTH,HEIGHT-10);
     
    		addMouseListener(new MyMouseAdapter(this));
    		addMouseMotionListener(new MyMouseMotionAdapter(this));	
    		addKeyListener(new MyKeyAdapter(this));
     
    		addWindowListener(new WindowAdapter()
    		{
     
    			public void windowClosing(WindowEvent we)
    			{
    				stopped = true;
    				screenThread.stopRunning();
    				sendAndUpdate(JVNCconstant.CLOSE,0,0);
    				System.exit(0);  
    			}
     
    		});
     
     
    		String serverName =	JOptionPane.showInputDialog(this, "Enter Server name :", "Server", JOptionPane.INFORMATION_MESSAGE);
     
    		try
    		{
    			s = new Socket(serverName.trim(), 1166);
    			if (s==null)
    			{
    				System.out.println("No I/O");
    				System.exit(0);
    			}
    			else
    			{	
    				in = new ObjectInputStream(s.getInputStream());
    				out = new PrintWriter(s.getOutputStream());
     
    				screenThread = new ScreenThread();
    			}
    		}
     
    		catch (Exception ex)
    		{
    			JOptionPane.showMessageDialog(null,"Server not found on PORT number 1166");
    			System.exit(0);
    		}
     
    	}
     
    	public void updateScreen(final ImageIcon i)
    	{	
    		javax.swing.SwingUtilities.invokeLater(new Runnable()
    		{
    			public void run()
    			{
                    screen.repaint();
    				screen.setIcon(i);
    			}
    		});
    	}
     
     
    	private void sendAndUpdate(int type,int arg1, int arg2)
    	{
    		String s = "" + type + "|" + arg1 + "|" + arg2;
    		out.println(s);
    		out.flush();
    	}
     
     
     
    	class MyMouseAdapter extends MouseAdapter
    	{
    		JVNCclient jvnc;
     
    		public MyMouseAdapter(JVNCclient jvnc)
    		{
    			this.jvnc = jvnc;
    		}
    		public void mousePressed(MouseEvent e)
    		{
    			sendAndUpdate(JVNCconstant.MOUSE_PRESS, e.getX(),e.getY());
    		}
     
    		public void mouseReleased(MouseEvent e)
    		{
    			sendAndUpdate(JVNCconstant.MOUSE_RELEASE,0,0);
    		}
    	}
     
    	class MyMouseMotionAdapter extends MouseMotionAdapter
    	{
    		JVNCclient jvnc;
     
    		public MyMouseMotionAdapter(JVNCclient jvnc)
    		{
    			this.jvnc = jvnc;
    		}
     
    		public void mouseDragged(MouseEvent e)
    		{
    			sendAndUpdate(JVNCconstant.MOUSE_MOVE, e.getX(), e.getY());		
    		}
     
    		public void mouseMoved(MouseEvent e)
    		{
    			sendAndUpdate(JVNCconstant.MOUSE_MOVE,e.getX(), e.getY());
    		}
    	}
     
    	public void mouseWheelMoved(MouseWheelEvent e)
    	{
    		sendAndUpdate(JVNCconstant.MOUSE_WHEEL,e.getScrollAmount(),0);
    	}
     
     
     
    	class MyKeyAdapter extends KeyAdapter
    	{
    		JVNCclient jvnc;
     
    		public MyKeyAdapter(JVNCclient jvnc)
    		{
    			this.jvnc = jvnc;
    		}
     
    		public void keyPressed(KeyEvent ke)
    		{
    			int key; 
     
    			key = ke.getKeyCode();
     
    			if(key==ke.VK_ENTER)
    				sendAndUpdate(JVNCconstant.KEY_PRESS_EVENTS,ke.VK_ENTER,0);
    			else if(key==ke.VK_F1)
    				sendAndUpdate(JVNCconstant.KEY_PRESS_EVENTS,ke.VK_F1,0);
    			else if(key==ke.VK_ESCAPE)
    				sendAndUpdate(JVNCconstant.KEY_PRESS_EVENTS,ke.VK_ESCAPE,0);
    		}	
    	}
     
    	public static void main(String argv[])
    	{
    		JVNCclient f = new JVNCclient();
    		f.setVisible(true);
    		f.show();
    	}
     
    	private class ScreenThread implements Runnable
    	{
    		Thread t;
    		private  boolean keepRunning;
     
    		ScreenThread()
    		{
    			keepRunning = true;
    			t = new Thread(this,"Screen Thread");
    			t.start();
    		}
     
    		public void run()
    		{
    			while (keepRunning)
    			{
    				try
    				{		
    					if(stopped ==false)	
    					{
    					if((i = (ImageIcon)in.readObject())!=null)
    					{
    						updateScreen(i);		
    						Thread.sleep(1000);
    						i=null;
    					}
    					}
    					else
    					{
    						keepRunning = false;
    						in.close();
    					}
    				}
    				catch(InterruptedException e)
    				{
    					System.out.println("Thread Interrupted");
    				}
    				catch(OutOfMemoryError e)
    				{
    					e.toString();
    					JOptionPane.showMessageDialog(null,"JVM can not able to allocate Memory");
    					System.exit(0);
    				}
    				catch (ClassNotFoundException ex)
    				{
    					ex.printStackTrace();
    				}
    				catch (Exception ex)
    				{
    					ex.printStackTrace();
    					JOptionPane.showMessageDialog(null,"Server is stoped");
    					System.exit(0);
    				}
    			}
    		}
     
    		public void stopRunning()
    		{
    			keepRunning = false;
    		}
    	}
     
    }
    any sort of help will be greatly appreciated, thanks...
    Last edited by helloworld922; March 28th, 2010 at 04:56 PM.


  2. #2
    Administrator copeg's Avatar
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    Default Re: program execution with warnings

    Look at the API for the components that are creating the error (Component and JFrame)
    Namely the methods that create the error. The deprecated methods in the API should refer you to the new methods to use ( for example setSize() instead of resize, and setVisible(true) instead of show(), etc...). The serialVersionUID refers to a specific variable that classes which implement the Serializeable interface should also contain a serialVersionUID variable (see Serializable). Hope this helps
    Last edited by copeg; March 28th, 2010 at 05:01 PM.

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