BufferedImage to Icon - have I done this in the correct way?

[krillian konstatos]

hi, forumsts!

I have had big problem width image handling in java. I am having a project where i must create
thumbnail images in JButton objects and when the user click on theese buttons a maximized
undecorated frame is opened and displays a larger variant of the selected image / images.
I have rendered the thumbnail images to icons for the button objects using the getScaledInstance
method in the Image class. But i am still unsure of if i have the grip on this operation or not.
I first assign a thumbnail image to a label in large frame and in an filterIcon method i convert
the image from that icon label to an object using the BufferedImage class and create a larger
icon image for my label object. I must also consider the size of the selected image to that part
that i dont want to display images that are smaller than the width of 800 pixels to be displayed
all over the screen but half of that size. Images that are larger than 800 will be displayed over
the screen with their defalt sizes. I have the code below ...

public final JLabel getImageLabel(File file) {

         // This method comes before the filterIcon method and here is where i 
        //  assign a default icon image to the jLbMainView object using the data
        //  found in the File object which is a parameter value in the display frame's
        //  constructor.  I use this file to create the default image with the help 
        // of the createImage method in the Toolkit class. 
	
		this.jLbMainView = new JLabel() {
			
			public boolean isOpaque() { return true; }
			public int getHorizontalAlignment() { return JLabel.CENTER; }
			public Color getBackground() { return Color.black; }
			
		};				
		
		ImageIcon imgIcon = null;
		Image sourceImg = null;
		
		String location = file.getAbsolutePath();
		sourceImg = frame.kit.createImage(location);
		jLbMainView.setIcon(new ImageIcon(sourceImg));		
		return jLbMainView;
	}

// Here is where i resizes the icon image from my label object that are centered over the 
// image display screen ...

private final void filterIcon(JLabel label, File file) {
		
		ImageIcon icon = (ImageIcon) label.getIcon();
		
		Image sourceImg = null;
		Image scaledImg = null;
		int hints = -1;
		
		sourceImg = (Image) icon.getImage();
		
		int compWidth = label.getSize().width;
		int compHeight = label.getSize().height;
				
		int w = sourceImg.getWidth(jLbMainView);
		int h = sourceImg.getHeight(jLbMainView);		
				
		BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
		Graphics2D g2d = (Graphics2D) image.getGraphics();
		
		g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
		RenderingHints.VALUE_INTERPOLATION_BILINEAR);
		
		g2d.setRenderingHint(RenderingHints.KEY_RENDERING,
		RenderingHints.VALUE_RENDER_QUALITY);
		
		g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
		RenderingHints.VALUE_ANTIALIAS_ON);
		
		g2d.drawImage(sourceImg, 0,0, w, h, label);
		
		if (w < 800) {
			hints = Image.SCALE_SMOOTH;
			scaledImg = image.getScaledInstance(width / 2, height, hints);
			scaledImg.flush();	
		} 
		
		else if (w >= 800) {
			hints = Image.SCALE_FAST;
			scaledImg = image.getScaledInstance(width, height, hints);		
			scaledImg.flush();
		} 

		sourceImg.flush();
		label.setIcon(null);
		label.setIcon(new ImageIcon(scaledImg));
		g2d.dispose();				

	}

I just need some hints or tips how to do this correct i am a rookie and i know i must have missed out a lot.
I have read some articles on the subjects in question but i am still unsure. I hope i have been clear enough
in my description of the problem in this post.

Best regards,
Krillian.

[Randall Twede]

one way to look at it is "if it works it is correct"
as far as style, i am no expert, and i only skimmed through your code, but it looks pretty good in general

[krillian konstatos]

Randall Twede wrote:one way to look at it is "if it works it is correct"
as far as style, i am no expert, and i only skimmed through your code, but it looks pretty good in general

Thank you so much for your reply and it works fine for the project in question and thank you so much for your
compliment on the style. It sheared me up a little after a lot of struggling with java's graphic handling
packages and thumbnail image processing.

/krillian.