Read an image in Netbeans

[Brooksy_FC]

I've got NetBeans installed, but I want to be able to read a image with it.

I'm not too familiar with Java and I've only tried to run HelloWorld! (I know, very basic)

The image is a TIFF file, but I can start with a basic format first.

Can anyone help guide me through what to do?

I'd much appreciated it :)

[CynicRus]

http://code.imagej.net/trac/imagej

http://sourceforge.net/apps/mediawiki/djatoka/index.php?title=Overview

http://www.javalobby.org/articles/ultimate-image/

[Brooksy_FC]

Thanks for the post, but I'm still confused.

Can someone show me some code that just always me to read a jpg image. Just to start off with

[CynicRus]

import java.awt.image.*;
import javax.imageio.*;
import java.io.*;
import java.awt.*;
import javax.swing.*;

public class ReadSharp {
private static class FrameShower implements Runnable {
final Frame frame;

public FrameShower(Frame frame) {
this.frame = frame;
}

public void run() {
frame.show();
}
}

public static void main(String args[]) throws IOException {
if (args.length != 1) {
System.err.println("Please include image filename on command line");
System.exit(-1);
}
// Read
File file = new File(args[0]);
BufferedImage input = ImageIO.read(file);
// Convert
Kernel sharpKernel = new Kernel(3, 3, new float[] { 0.0f, -1.0f, 0.0f,
-1.0f, 5.0f, -1.0f, 0.0f, -1.0f, 0.0f });
ConvolveOp convolveOp = new ConvolveOp(sharpKernel,
ConvolveOp.EDGE_NO_OP, null);
int width = input.getWidth();
int height = input.getHeight();
BufferedImage output = new BufferedImage(width, height,
BufferedImage.TYPE_INT_ARGB);
convolveOp.filter(input, output);
// Make screen
Icon icon = new ImageIcon(output);
JLabel label = new JLabel(icon);
JFrame frame = new JFrame("Sharp Image");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOS E);
frame.getContentPane().add(label, BorderLayout.CENTER);
frame.pack();
// Show
Runnable runner = new FrameShower(frame);
EventQueue.invokeLater(runner);
}
}

[Brooksy_FC]

I'm using a similar code


import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;
import javax.swing.*;

public class LoadAndShow extends JPanel {
BufferedImage image;
Dimension size = new Dimension();

public LoadAndShow(BufferedImage image) {
this.image = image;
size.setSize(image.getWidth(), image.getHeight());
}

/**
* Drawing an image can allow for more
* flexibility in processing/editing.
*/
protected void paintComponent(Graphics g) {
// Center image in this component.
int x = (getWidth() - size.width)/2;
int y = (getHeight() - size.height)/2;
g.drawImage(image, x, y, this);
}

public Dimension getPreferredSize() { return size; }

public static void main(String[] args) throws IOException {
String path = "Snow.jpg";
BufferedImage image = ImageIO.read(new File(path));
LoadAndShow test = new LoadAndShow(image);
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(new JScrollPane(test));
f.setSize(400,400);
f.setLocation(200,200);
f.setVisible(true);
//showIcon(image);
}

/**
* Easy way to show an image: load it into a JLabel
* and add the label to a container in your gui.
*/
private static void showIcon(BufferedImage image) {
ImageIcon icon = new ImageIcon(image);
JLabel label = new JLabel(icon, JLabel.CENTER);
JOptionPane.showMessageDialog(null, label, "icon", -1);
}
}

But I keep getting this error back:


error: class LoadAndShow is public, should be declared in a file named LoadAndShow.java
public class LoadAndShow extends JPanel {
1 error

[CynicRus]

Public-classes must be declared in separate java-files.

[Zugzwang]

Public-classes must be declared in separate java-files.

Even more, in Java, the file name of the java file a class source code resides in *must* be the same as the name of the class, including the capitalization of the class name! The error message says just that: The file name of the class "LoadAndShow" must be "LoadAndShow.java".

[Brooksy_FC]

Ok cool, how do I find this file and change it?

[CynicRus]

No, you need create file with this name. And put to file some class code.

some class code>>some.java

[Brooksy_FC]

Right ok. I've never written this kinda of code before, what sorta stuff should I be writing?

[Brooksy_FC]

OK, I've managed to download a LoadAndDisplay, but that's not exactly what I need

[CynicRus]

http://filedeluxe.com/de030x4tmnkk.html- you fixed code.

[Brooksy_FC]

Nice one, I'll try and download this. Where do I put the file? I'm using windows at the mo

[CynicRus]

Unarchive with winrar etc, and open it in netbeans.

[CynicRus]

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package loadandshow;
import java.awt.image.*;
import javax.imageio.*;
import java.io.*;
import java.awt.*;
import javax.swing.*;
/**
*
* @author cynic
*/
public class LoadAndShow {
private static class FrameShower implements Runnable {
final Frame frame;

public FrameShower(Frame frame) {
this.frame = frame;
}

public void run() {
frame.show();
}
}

public static void main(String args[]) throws IOException {
if (args.length != 1) {
System.err.println("Please include image filename on command line");
System.exit(-1);
}
// Read
File file = new File(args[0]);
BufferedImage input = ImageIO.read(file);
// Convert
Kernel sharpKernel = new Kernel(3, 3, new float[] { 0.0f, -1.0f, 0.0f,
-1.0f, 5.0f, -1.0f, 0.0f, -1.0f, 0.0f });
ConvolveOp convolveOp = new ConvolveOp(sharpKernel,
ConvolveOp.EDGE_NO_OP, null);
int width = input.getWidth();
int height = input.getHeight();
BufferedImage output = new BufferedImage(width, height,
BufferedImage.TYPE_INT_ARGB);
convolveOp.filter(input, output);
// Make screen
Icon icon = new ImageIcon(output);
JLabel label = new JLabel(icon);
JFrame frame = new JFrame("Sharp Image");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOS E);
frame.getContentPane().add(label, BorderLayout.CENTER);
frame.pack();
// Show
Runnable runner = new FrameShower(frame);
EventQueue.invokeLater(runner);
}
}

and, after opened package and test him - can try my code.

[Brooksy_FC]

Right, I've got the file, so do I just have this opened in netbeans along side the code I already have?

Sorry for all the questions, I have no idea what I am doing

[CynicRus]

Don't understand you problem. You can extract tar.gz? If you extract this:




Choose File > New Project (Ctrl-Shift-N on Windows/Cmd-Shift-N on Mac OS X).
Choose Java > Java Project with Existing Sources. Click Next.
In the Name and Location page of the wizard, follow these steps:

Type a project name.
(Optional) Change the location of the project folder.
(Optional) Change the name of the build script used by the IDE. This might be desirable if there is already a build script called build.xml that is used to build the sources.
(Optional) Select the Use Dedicated Folder for Storing Libraries checkbox and specify the location for the libraries folder. See Sharing Project Libraries (http://netbeans.org/kb/docs/java/project-setup.html#projects-shared-libraries) for more information on this option.
(Optional) Select the Set as Main Project checkbox. When you select this option, keyboard shortcuts for commands such as Clean and Build Main Project (Shift-F11) apply to this project.

Click Next to advance to the Existing Sources page of the wizard.
In the Source Packages Folder pane, click Add Folder. Then navigate to your sources and select the source roots, click Open. When you add a folder containing source code, you must add the folder that contains the highest folder in your package tree. For example, for the com.mycompany.myapp.ui package, you add the folder that contains the com folder.
(Optional) In the Test Package Folders pane, click Add Folder to select the folder containing the JUnit package folders.
Click Next to advance to the Includes & Excludes page of the wizard.
(Optional) In the Includes & Excludes page of the wizard, enter file name patterns for any files that should be included or excluded from the project. By default, all files in your source roots are included.
Click Finish.