Unexpected Error

[Mir]

Hi all

I am in big problem.When i run the code every thing is work fine.But when i run exe of this code then i am facing problem.What happen when i click on About Dialog then exe close autometically.All other menu is working..

If any one need my code of About Dialog then i will give..

Plz help me it's a urgent...

[khai]

may i see what your code looks like?

[Mir]

Quote:

Originally Posted by khai

may i see what your code looks like?

Thxs for responce

here is code

Code:

package main;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Graphics;
import javax.swing.JLabel;

/*
 *
 * AboutDlg
 *
 */
public class AboutDlg extends JDialog implements MouseListener 
{
	  private String URL = "http://www.yahoo.com";
	  
	  private String Email = "abc@yahoo.com";
	  
	  
	  
	public String getURL() {
        return URL;
     

    }
	
	  public void setURL(String URL) {
	        this.URL = URL;
	      
	    }
	  
	  public void setEmail(String URL) {
	        this.Email = Email;
	        
	    }
	  
	  
	 
	  

	public AboutDlg(Frame parent)
	{
		super();
		 
  
	    JLabel Dru =  new JLabel( "                                      Email : abc@yahoo.com" , JLabel.LEFT);

	     JLabel Drw =  new JLabel( "                                          http://www.yahoo.com" , JLabel.LEFT);
	     
	   
	     AboutDlg.setDefaultLookAndFeelDecorated(true);
	     
	     this.setURL(URL);
	     Drw.addMouseListener(this);
	     Drw.setCursor(new Cursor(Cursor.HAND_CURSOR));
	     Drw.setForeground(Color.BLUE);
	     
	     this.setEmail(Email);
	     Dru.addMouseListener(this);
	     Dru.setCursor(new Cursor(Cursor.HAND_CURSOR));
	     Dru.setForeground(Color.BLUE);
	     
	    
	
	  	     
	      Font f3= new Font("Terminal", Font.PLAIN, 12);
	      
	      
	      
	
	      Dru.setFont(f3);
	      Drw.setFont(f3);
	      
	     
		setTitle( "About" ) ;
	
		setContentPane( new MyPanel() ) ;

	    getContentPane().setLayout(new FlowLayout());   
	   
		
	    
	
	
		getContentPane().add(Drw );
		getContentPane().add(Dru );
		getContentPane().add( new Button("   OK   "));
		


		
		setSize( 300 ,225 ) ;

	
		Point fatherLocation = parent.location();
		move(fatherLocation.x + 150,fatherLocation.y + 200);
		show();

	}
	
	
	 public void mouseClicked(MouseEvent e){
	        try{
	            String command = "start " + this.URL;
	            Process process = Runtime.getRuntime().exec("cmd /c \"" + command + "\"");
	          //Following line works as it should.
	            
	            Runtime.getRuntime().exec("cmd.exe /c start mailto:abc@yahoo.com");
	    	

	            
	            
	            
	        } catch (Exception exception){
	            System.out.println("Exception caught : " + exception.getMessage());
	        }
	    }
	 
	
	 
	 public void mouseEntered(MouseEvent e) {
	    }

	    public void mouseExited(MouseEvent e) {

	    	
	    }

	    public void mousePressed(MouseEvent e) {
	    	
	    }

	    public void mouseReleased(MouseEvent e) {
	    }
	    
	    public void paint(Graphics graphis){
	        super.paint(graphis);
	        graphis.setColor(this.getForeground());
	        graphis.drawLine(0, this.getHeight() - 1, this.getWidth(), this.getHeight() - 1);
	    }

	
	public class MyPanel extends JPanel {
		private Image img ;
		public MyPanel() {
			setLayout( new BorderLayout() ) ;
			img = new ImageIcon("logod.jpg").getImage() ;
		
			if( img == null ) {
				System.out.println( "Image is null" );
				System.exit( 1 ) ;
			}
			if( img.getHeight(this) <= 0 || img.getWidth( this ) <= 0 ) {
				System.out.println( "Image width or height must be +ve" );
				System.exit( 2 ) ;
			}
		}
		public void drawBackground( Graphics g ) {
			int w = getWidth() ;
			int h = getHeight() ;
			int iw = img.getWidth( this ) ;
			int ih = img.getHeight( this ) ;
			for( int i = 0 ; i < w ; i+=iw ) {
				for( int j = 0 ; j < h ; j+= ih ) {
					g.drawImage( img ,0,9 , this ) ;
				}
						}
		
		}
		protected void paintComponent(Graphics g) {
			super.paintComponent(g);
			Color underline = getForeground();

			g.setColor(underline);

			drawBackground( g ) ;
		}
	}
	
	

	public boolean action (Event evt, Object arg)
	{
		if (evt.target instanceof Button)
		{
			hide();
			dispose();
			return true;
		}
		return false;
	}
	

	private boolean updateDB()
	{
		
		hide();
		dispose();
		return true;
	}
	public boolean handleEvent (Event event) 
	{
		switch (event.id) {
		case Event.WINDOW_DESTROY:
			dispose();
			return true;
		default:
			return super.handleEvent(event);
		}
	}




}

Plz help me...

[Nicholas Jordan]

Code:

public boolean action (Event evt, Object arg)
{
    if (evt.target instanceof Button)
    {
        hide();
        dispose();
        return true;
    }
    return false;
}

If event is button, this closes the app.

[Mir]

Quote:

Originally Posted by Nicholas Jordan

Code:

public boolean action (Event evt, Object arg)
{
    if (evt.target instanceof Button)
    {
        hide();
        dispose();
        return true;
    }
    return false;
}

If event is button, this closes the app.

Sir now i use this code

Code:

public boolean action (Event evt, Object arg)
	{
		if (evt.target instanceof Button)
		{
			if (evt.target == OK) {
				return updateDB();
			}
			return false;

		}
		return false;

	
	}

But problem is same.Plz help me to solve it..

[Norm]

A suggestion to help YOU find your problem:
Add println() statements before any statement that will dispose or exit and see if any of them are being executed.

[Mir]

Quote:

Originally Posted by Norm

A suggestion to help YOU find your problem:
Add println() statements before any statement that will dispose or exit and see if any of them are being executed.

Yes Norm I fiend it

here is last line code is actually executed..

Code:

 Dru.setFont(f3);
      Drw.setFont(f3);
	      
 
 
 
	 JOptionPane.showMessageDialog(null,"HI It is last part to show in this Dialog");

plz help me

[Norm]

Not sure what your problem is now if you've found it? What is it that you have found?

What lines of code follows what you have posted as being
"last line is actually executed"? Those lines sound like they could be important, but you left them off your post.

[Mir]

Quote:

Originally Posted by Norm

Not sure what your problem is now if you've found it? What is it that you have found?

What lines of code follows what you have posted as being
"last line is actually executed"? Those lines sound like they could be important, but you left them off your post.

ok here i full line code

Code:

public AboutDlg(Frame parent)
	{
		super();
		 
  
	    JLabel Dru =  new JLabel( "                                      Email : abc@yahoo.com" , JLabel.LEFT);

	     JLabel Drw =  new JLabel( "                                          http://www.yahoo.com" , JLabel.LEFT);
	     
	   
	     AboutDlg.setDefaultLookAndFeelDecorated(true);
	     
	     this.setURL(URL);
	     Drw.addMouseListener(this);
	     Drw.setCursor(new Cursor(Cursor.HAND_CURSOR));
	     Drw.setForeground(Color.BLUE);
	     
	     this.setEmail(Email);
	     Dru.addMouseListener(this);
	     Dru.setCursor(new Cursor(Cursor.HAND_CURSOR));
	     Dru.setForeground(Color.BLUE);
	     
	    
	
	  	     
	      Font f3= new Font("Terminal", Font.PLAIN, 12);
	      
	      
	      
	
	      Dru.setFont(f3);
	      Drw.setFont(f3);
	 //     JOptionPane.showMessageDialog(null,"HI It is last part to show in this Dialog"); here the last line for execute the code..
	     
		setTitle( "About" ) ;
	
		setContentPane( new MyPanel() ) ;

	    getContentPane().setLayout(new FlowLayout());   
	   
		
	    
	
	
		getContentPane().add(Drw );
		getContentPane().add(Dru );
		getContentPane().add( new Button("   OK   "));
		


		
		setSize( 300 ,225 ) ;

	
		Point fatherLocation = parent.location();
		move(fatherLocation.x + 150,fatherLocation.y + 200);
		show();

	}
	
	
	 public void mouseClicked(MouseEvent e){
	        try{
	            String command = "start " + this.URL;
	            Process process = Runtime.getRuntime().exec("cmd /c \"" + command + "\"");
	          //Following line works as it should.
	            
	            Runtime.getRuntime().exec("cmd.exe /c start mailto:abc@yahoo.com");
	    	

	            
	            
	            
	        } catch (Exception exception){
	            System.out.println("Exception caught : " + exception.getMessage());
	        }
	    }
	 
	
	 
	 public void mouseEntered(MouseEvent e) {
	    }

	    public void mouseExited(MouseEvent e) {

	    	
	    }

	    public void mousePressed(MouseEvent e) {
	    	
	    }

	    public void mouseReleased(MouseEvent e) {
	    }
	    
	    public void paint(Graphics graphis){
	        super.paint(graphis);
	        graphis.setColor(this.getForeground());
	        graphis.drawLine(0, this.getHeight() - 1, this.getWidth(), this.getHeight() - 1);
	    }

	
	public class MyPanel extends JPanel {
		private Image img ;
		public MyPanel() {
			setLayout( new BorderLayout() ) ;
			img = new ImageIcon("logod.jpg").getImage() ;
		
			if( img == null ) {
				System.out.println( "Image is null" );
				System.exit( 1 ) ;
			}
			if( img.getHeight(this) <= 0 || img.getWidth( this ) <= 0 ) {
				System.out.println( "Image width or height must be +ve" );
				System.exit( 2 ) ;
			}
		}
		public void drawBackground( Graphics g ) {
			int w = getWidth() ;
			int h = getHeight() ;
			int iw = img.getWidth( this ) ;
			int ih = img.getHeight( this ) ;
			for( int i = 0 ; i < w ; i+=iw ) {
				for( int j = 0 ; j < h ; j+= ih ) {
					g.drawImage( img ,0,9 , this ) ;
				}
						}
		
		}
		protected void paintComponent(Graphics g) {
			super.paintComponent(g);
			Color underline = getForeground();

			g.setColor(underline);

			drawBackground( g ) ;
		}
	}
	
	

	public boolean action (Event evt, Object arg)
	{
		if (evt.target instanceof Button)
		{
			hide();
			dispose();
			return true;
		}
		return false;
	}
	

	private boolean updateDB()
	{
		
		hide();
		dispose();
		return true;
	}
	public boolean handleEvent (Event event) 
	{
		switch (event.id) {
		case Event.WINDOW_DESTROY:
			dispose();
			return true;
		default:
			return super.handleEvent(event);
		}
	}




}

JOptionPane.showMessageDialog(null,"HI It is last part to show in this Dialog");
plz help me

[Nicholas Jordan]

Quote:

Originally Posted by Mir

(...snip...)What happen when i click on About Dialog then exe close autometically.All other menu is working..

Norm, what is happening here is that window events and other events are processed in code by a mix of sub-typing ( class a instance of class b )? true/false and a java construct called a switch. A switch is an effective code construct for having the compiler create a jump table.

Poster has:

Code:

    public boolean handleEvent (Event event) 
    {
        switch (event.id) {
        case Event.WINDOW_DESTROY:
            dispose();
            return true;
        default:
            return super.handleEvent(event);
        }
    }

Okay, sounds good but due to using event id, we should look at the value of Event.WINDOW_DESTROY as it should not be but may be numeric equivalent of some other class that is shipping an event to the code here.

At least that is what it sounds like, based on poster's original description:

Quote:

when i click on About Dialog then exe close autometically.

Above that, code shows:

Code:

if (evt.target instanceof Button)

Which also ( with logic that follows ) closes the window.

Code:

public void mouseClicked(MouseEvent e){

would process a mouse event to launch URL, but that is not shown in code.

This project needs additional work disentangling event processing logic.

[Norm]

In the code you've posted I don't see any println() statements where there are possiblities of your program changing what is displayed. Ie before all dispose() statements.
If you'd put these in your code, you might see what is happening.
You need to do some work yourself to find your problem!!!