HELP,Where are the Scrolls?

[Pengfei Wang]

import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Image;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

public class ImageFrame extends JFrame {

	private static final int DEFAULT_WIDTH = 800;
	private static final int DEFAULT_HEIGHT = 600;
	private Image image;

	public static void main(String[] args) {
		new ImageFrame();
	}

	public ImageFrame() {
		setTitle("Image Viewer");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
		setLocationRelativeTo(null);

		loadImage();
		
		JPanel panel = new JPanel() {
			public void paintComponent(Graphics g) {
				g.drawImage(image, 0, 0, null);
			}
		};

		JScrollPane scrollPane = new JScrollPane();
		scrollPane.getViewport().add(panel);
		getContentPane().add(scrollPane, BorderLayout.CENTER);

		setVisible(true);
	}
	private void loadImage() {
		try {
			image = ImageIO.read(new File("C://1.jpg"));
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}

The scrollbars just won't show up, I can't locate the BUG, can anyone help?
I noticed someone had the simlumar question inside this forum, but that is the "ImageIcon" solution, not "Image", or "ImageIO" solutions.

[Greg Brannon]

Please provide some details with your post to describe the problem and/or ask specific question(s) so that we know what to help with. Not everyone can or wants to run posted code to then guess what the poster's thread title means.

[Campbell Ritchie]

Welcome to the Ranch

As Greg has said, we can’t try your code because we don’t have the image file. Is the image smaller than the panel?

[Michael Dunn]

'panel' needs to have a preferred size set,
one bigger than the viewport size

[Pengfei Wang]

Michael Dunn wrote:'panel' needs to have a preferred size set,
one bigger than the viewport size

aha...
after line 34,
added:

panel.setPreferredSize(new Dimension(image.getWidth(null), image
				.getHeight(null)));

DONE!

Thanks a lot!

[Pengfei Wang]

Greg Brannon wrote:Please provide some details with your post to describe the problem and/or ask specific question(s) so that we know what to help with. Not everyone can or wants to run posted code to then guess what the poster's thread title means.

Sorry, this is my first post... ...I'm learning the rules, thanks.