Solved

New to Java - Need to display an image in a window using JAVA

Posted on 2013-12-10
9
232 Views
Last Modified: 2013-12-10
I am new to JAVA and have a project that manipulates images.  I am able to save the new image to a file but want to display it in a window on the screen.  Here is the code I am using.  The window opens but the image doesn't display.  Resultsimage is a BuffereImage that contains the new image.

                           Graphics g = resultsimage.getGraphics();
                           JFrame window = new JFrame("Image");
                           window.setBounds(0, 0, resultsimage.getWidth()+10, resultsimage.getHeight()+10);
                           window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                           g.drawImage(resultsimage, 5, 5, resultsimage.getWidth(), resultsimage.getHeight(), Color.WHITE, null);
                           window.setVisible(true);

Open in new window


Any help is greatly appreciated.
0
Comment
Question by:dyarosh
  • 6
  • 2
9 Comments
 
LVL 86

Accepted Solution

by:
CEHJ earned 500 total points
ID: 39709074
                           JFrame window = new JFrame("Image");
                           window.setBounds(0, 0, resultsimage.getWidth()+10, resultsimage.getHeight()+10);
                           window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                           window.getContentPane().add(new JLabel(new ImageIcon(resultsimage)));
                           window.setVisible(true);
                                  

Open in new window

Try the above instead
0
 
LVL 13

Expert Comment

by:Ashok
ID: 39709079
try adding

protected void paintComponent(Graphics g)  {
        super.paintComponent(g);  
        g.drawImage(resultsimage, 5, 5, resultsimage.getWidth(), resultsimage.getHeight(), Color.WHITE, null);
}

then make a call to above passing g

paintComponent(g);
0
 
LVL 13

Expert Comment

by:Ashok
ID: 39709098
import java.awt.Graphics2D;

.....

Graphics2D g2d = (Graphics2D) g.create();  
//Paint it on screen  
g2d.drawImage(resultsimage, 5, 5, resultsimage.getWidth(), resultsimage.getHeight(), Color.WHITE, null);
g2d.dispose();
0
 
LVL 13

Expert Comment

by:Ashok
ID: 39709130
If you understand little Java, here is lot of good stuff with graphic.

http://www.ntu.edu.sg/home/ehchua/programming/java/J8b_Game_2DGraphics.html

I do not have Java code in front of me right now so I am not able to give you exact code.
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 13

Expert Comment

by:Ashok
ID: 39709274
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import javax.swing.JPanel;

public class TestPaintImage {

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

    public TestPaintImage() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException ex) {
                } catch (InstantiationException ex) {
                } catch (IllegalAccessException ex) {
                } catch (UnsupportedLookAndFeelException ex) {
                }

                JFrame frame = new JFrame();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new ImagePane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class ImagePane extends JPanel {

        private BufferedImage background;

        public ImagePane() {
            try {
                background = ImageIO.read(new File("/path/to/your/image"));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        @Override
        public Dimension getPreferredSize() {
            return background == null ? super.getPreferredSize() : new Dimension(background.getWidth(), background.getHeight());
        }

        @Override
        protected void paintComponent(Graphics g) {
            super.paintComponent(g);
            if (background != null) {
                int x = (getWidth() - background.getWidth()) / 2;
                int y = (getHeight() - background.getHeight()) / 2;
                g.drawImage(background, x, y, this);
            }
        }
    }
}

Test above first.  background is same as your resultsimage.
0
 
LVL 13

Expert Comment

by:Ashok
ID: 39709330
Here is another helpful code.....

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

public class test extends JPanel {
public test() {
setPreferredSize(new Dimension(400,300));
}

public void paintComponent(Graphics g) {
g.setColor(Color.WHITE);
g.fillRect(0,0,getWidth(),getHeight());
g.setColor(Color.GREEN);
g.drawLine(0,0,getWidth(),getHeight());
g.drawLine(getWidth(),0,0,getHeight());
}

public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final test t = new test();
f.add(t,BorderLayout.CENTER);
JButton b = new JButton("Save Image");
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
BufferedImage bi = new BufferedImage(
t.getWidth(),t.getHeight(),
BufferedImage.TYPE_INT_RGB);
Graphics2D g = bi.createGraphics();
t.paintComponent(g);
try {
ImageIO.write(bi,"JPEG",
new File("image.jpg"));
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
});
f.add(b,BorderLayout.SOUTH);
f.pack();
f.setVisible(true);
}
});
}
}
0
 
LVL 13

Expert Comment

by:Ashok
ID: 39709346
JPanel panel = new JPanel(){
        @Override
        public void paintComponent(Graphics g) {
            BufferedImage image = null; // get your buffered image.
            Graphics2D graphics2d = (Graphics2D) g;
            graphics2d.drawImage(image, 0, 0, null);
            super.paintComponents(g);
        }
    };
0
 

Author Closing Comment

by:dyarosh
ID: 39709413
THank you.  That worked for me.
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 39709603
:)
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
Video by: Michael
Viewers learn about how to reduce the potential repetitiveness of coding in main by developing methods to perform specific tasks for their program. Additionally, objects are introduced for the purpose of learning how to call methods in Java. Define …
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now