Only writing Integer pixel array to a .txt file,or showing in Frame

Question

Sir,
I want to write integer values (range:0 to 255) to a .txt file .Actually after manipulating a .jpeg/.gif image I have gotten a 2D pixel array and a 1D pixel array that can be easily shown in console but I want to write this pixel array into a .txt file. Using of writeInt() is not working. Actually after using this faction the created file contain information which is non-alphanumeric /alphanumeric characters......
following is error free the code: Plz. See only and only into the �class TestImage�and plz look after line marked by //�my_problem_to_be_resolved.�It is just few lines of code .I promise you will not be bothered.Plz��..
import java.awt.*;
import java.io.File;
import java.io.FileWriter;
import java.awt.image.*;
import java.io.*;
import java.util.*;
import javax.imageio.*;
import javax.imageio.stream.*;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
class Image {
protected int width,height;
// 'samples' stores the image pixel values.
protected int[][] samples;
// Constructor: Reads the image from the
// specified file name.
public Image(String filename)
throws Exception { read(filename); }
// Returns the pixel width of the image.
public int getWidth() { return width; }
// Returns the pixel height of the image.
public int getHeight() { return height; }
// Reads the image from the specified file
// name into the 'samples' array. Throws an
// exception if the image is stored in an
// unsupported file format (currently only
// .GIF, .JPG, and .PNG are supported by Sun).
public void read(String filename)
throws Exception {
// Extract the file name suffix.
String ext = filename.substring
(filename.indexOf('.')+1);
// Create a file object for the file name.
File fileImage = new File(filename);
// Get a list of ImageReaders that claim
// to be able to decode this image file
// based on the file name suffix.
Iterator imageReaders = ImageIO.
getImageReadersBySuffix(ext);
ImageReader imageReader;
// Grab the first ImageReader in the list.
if (imageReaders.hasNext())
imageReader = (ImageReader)
imageReaders.next();
// If we get here we cannot decode the image.
else throw new IIOException
("Unsupported image format");
// Create a file input stream object to
// read the image date.
FileImageInputStream imageInputStream =
new FileImageInputStream(fileImage);
// Tell the ImageReader object to read data
// from our file input stream object.
imageReader.setInput(imageInputStream);
// Get the width and height of the image.
width = imageReader.getWidth(0);
height = imageReader.getHeight(0);
// Read the image from the file input stream,
// and close the input stream when done.
BufferedImage bufImage =
imageReader.read(0);
imageInputStream.close();
// Get a raster object so we can extract the
// pixel data from the BufferedImage.
WritableRaster wRaster =
bufImage.getRaster();
// Create our 'samples' 2d-array.
samples = new int[height][width];
// Extract the image data into our 'samples'
// array.
for (int row = 0; row < height; row++)
for (int col = 0; col < width; col++)
samples[row][col] =
wRaster.getSample(col,row,0);
// Write the image stored in the 'samples'
// array to the specified file. The file name
// suffix should be a supported image file
// format (currently either .JPG or .PNG).
public void write(String filename)
throws Exception {
// Extract the file name suffix.
String ext = filename.substring
(filename.indexOf('.')+1);
// Create a file object for the file name.
File fileImage = new File(filename);
// Get a list of ImageWriters that claim to
// be able to encode images in the specified
// image file format based on the file name
// suffix.
Iterator imageWriters = ImageIO.
getImageWritersBySuffix(ext);
ImageWriter imageWriter;
// Grab the first ImageWriter in the list.
if (imageWriters.hasNext())
imageWriter = (ImageWriter)
imageWriters.next();
// If we get here we cannot encode the image.
else throw new IIOException
("Unsupported image format");
// Create a file output stream object to
// write the image data.
FileImageOutputStream imageOutputStream
= new FileImageOutputStream
(fileImage);
// Tell the ImageWriter to use our file
// output stream object.
imageWriter.setOutput
(imageOutputStream);
// The ImageWriter.write() method expects a
// BufferedImage. Convert our 'samples' array
// into a BufferedImage.
BufferedImage bufImage =
createBufferedImage();
// Encode the image to the output file.
imageWriter.write(bufImage);
imageOutputStream.close();
// Draws the image stored in the 'samples'
// array on the specified graphics context.
public void draw(Graphics gc,int x,int y){
BufferedImage bufImage =
createBufferedImage();
gc.drawImage(bufImage,x,y,null);
// Converts the 'samples' array into a
// BufferedImage object. Students do not have
// to understand how this works.
private BufferedImage
createBufferedImage() {
// Create a monochrome BufferedImage object.
BufferedImage bufImage = new
BufferedImage(width,height,
BufferedImage.TYPE_BYTE_GRAY);
// Create a WriteableRaster object so we can
// put sample data into the BufferedImage
// object's raster.
WritableRaster wRaster =
bufImage.getRaster();
// Copy the 'samples' data into the
// BufferedImage object's raster.
for (int row = 0; row < height; row++)
for (int col = 0; col < width; col++)
wRaster.setSample
(col,row,0,samples[row][col]);
// Return the newly created BufferedImage.
return bufImage;
} // End of Class Image
class TestImage {
public static void main(String args[])
throws Exception {
// Create a frame to display the image.
Frame frame = new Frame("Test Image");
frame.setSize(1024,768);
frame.setVisible(true);
Graphics gc = frame.getGraphics();
try {
// Read the image from the file.
Image img = new Image("C:/lilies.jpg");
int height=img.getHeight();
int width =img.getWidth();
//�my_problem_to_be_resolved.�
     File image_object_arry=new File("C:/Image_array.txt");
     FileOutputStream image_object_arry_stream= new FileOutputStream(image_object_arry);
     DataOutputStream int_image_object_arry_stream=new DataOutputStream(image_object_arry_stream);
//Conversion of two dimensional pixel arrry into one dimensional array
int intPixels1[] = new int [height * width];
int k = 0;
for(int i = 0; i <= width; i++) {
for(int j = 0; j <= height; j++) {
intPixels1[k] = img.samples[i][j];
int_image_object_arry_stream.writeInt((int) intPixels1[k]);
// System.out.println(intPixels1[k]);
k = k+1;
import java.awt.*;
import java.io.File;
import java.io.FileWriter;
import java.awt.image.*;
import java.io.*;
import java.util.*;
import javax.imageio.*;
import javax.imageio.stream.*;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
class Image {
protected int width,height;
// 'samples' stores the image pixel values.
protected int[][] samples;
// Constructor: Reads the image from the
// specified file name.
public Image(String filename)
throws Exception { read(filename); }
// Returns the pixel width of the image.
public int getWidth() { return width; }
// Returns the pixel height of the image.
public int getHeight() { return height; }
// Reads the image from the specified file
// name into the 'samples' array. Throws an
// exception if the image is stored in an
// unsupported file format (currently only
// .GIF, .JPG, and .PNG are supported by Sun).
public void read(String filename)
throws Exception {
// Extract the file name suffix.
String ext = filename.substring
(filename.indexOf('.')+1);
// Create a file object for the file name.
File fileImage = new File(filename);
// Get a list of ImageReaders that claim
// to be able to decode this image file
// based on the file name suffix.
Iterator imageReaders = ImageIO.
getImageReadersBySuffix(ext);
ImageReader imageReader;
// Grab the first ImageReader in the list.
if (imageReaders.hasNext())
imageReader = (ImageReader)
imageReaders.next();
// If we get here we cannot decode the image.
else throw new IIOException
("Unsupported image format");
// Create a file input stream object to
// read the image date.
FileImageInputStream imageInputStream =
new FileImageInputStream(fileImage);
// Tell the ImageReader object to read data
// from our file input stream object.
imageReader.setInput(imageInputStream);
// Get the width and height of the image.
width = imageReader.getWidth(0);
height = imageReader.getHeight(0);
// Read the image from the file input stream,
// and close the input stream when done.
BufferedImage bufImage =
imageReader.read(0);
imageInputStream.close();
// Get a raster object so we can extract the
// pixel data from the BufferedImage.
WritableRaster wRaster =
bufImage.getRaster();
// Create our 'samples' 2d-array.
samples = new int[height][width];
// Extract the image data into our 'samples'
// array.
for (int row = 0; row < height; row++)
for (int col = 0; col < width; col++)
samples[row][col] =
wRaster.getSample(col,row,0);
// Write the image stored in the 'samples'
// array to the specified file. The file name
// suffix should be a supported image file
// format (currently either .JPG or .PNG).
public void write(String filename)
throws Exception {
// Extract the file name suffix.
String ext = filename.substring
(filename.indexOf('.')+1);
// Create a file object for the file name.
File fileImage = new File(filename);
// Get a list of ImageWriters that claim to
// be able to encode images in the specified
// image file format based on the file name
// suffix.
Iterator imageWriters = ImageIO.
getImageWritersBySuffix(ext);
ImageWriter imageWriter;
// Grab the first ImageWriter in the list.
if (imageWriters.hasNext())
imageWriter = (ImageWriter)
imageWriters.next();
// If we get here we cannot encode the image.
else throw new IIOException
("Unsupported image format");
// Create a file output stream object to
// write the image data.
FileImageOutputStream imageOutputStream
= new FileImageOutputStream
(fileImage);
// Tell the ImageWriter to use our file
// output stream object.
imageWriter.setOutput
(imageOutputStream);
// The ImageWriter.write() method expects a
// BufferedImage. Convert our 'samples' array
// into a BufferedImage.
BufferedImage bufImage =
createBufferedImage();
// Encode the image to the output file.
imageWriter.write(bufImage);
imageOutputStream.close();
// Draws the image stored in the 'samples'
// array on the specified graphics context.
public void draw(Graphics gc,int x,int y){
BufferedImage bufImage =
createBufferedImage();
gc.drawImage(bufImage,x,y,null);
// Converts the 'samples' array into a
// BufferedImage object. Students do not have
// to understand how this works.
private BufferedImage
createBufferedImage() {
// Create a monochrome BufferedImage object.
BufferedImage bufImage = new
BufferedImage(width,height,
BufferedImage.TYPE_BYTE_GRAY);
// Create a WriteableRaster object so we can
// put sample data into the BufferedImage
// object's raster.
WritableRaster wRaster =
bufImage.getRaster();
// Copy the 'samples' data into the
// BufferedImage object's raster.
for (int row = 0; row < height; row++)
for (int col = 0; col < width; col++)
wRaster.setSample
(col,row,0,samples[row][col]);
// Return the newly created BufferedImage.
return bufImage;
} // End of Class Image
/*class TestImage {
public static void main(String args[])
throws Exception {
// Create a frame to display the image.
Frame frame = new Frame("Test Image");
frame.setSize(1024,768);
frame.setVisible(true);
Graphics gc = frame.getGraphics();
try {
// Read the image from the file.
Image img = new Image("C:/srk.jpg");
// Display the image.
img.draw(gc,10,40);
// Flip the image upside down
//img.flipX();
// Display the flipped image.
img.draw(gc,20+img.getWidth(),40);
// Write the new image to a file
img.write("HorseNew.jpg");
} catch (Exception e) {
System.out.println
("Exception in main() "+e.toString());
class TestImage {
public static void main(String args[])
throws Exception {
// Create a frame to display the image.
Frame frame = new Frame("Test Image");
frame.setSize(1024,768);
frame.setVisible(true);
Graphics gc = frame.getGraphics();
try {
// Read the image from the file.
Image img = new Image("C:/lilies.jpg");
int height=img.getHeight();
int width =img.getWidth();
File image_object_arry=new File("C:/Image_array.txt");
FileOutputStream image_object_arry_stream=new FileOutputStream(image_object_arry);
     DataOutputStream int_image_object_arry_stream=new DataOutputStream(image_object_arry_stream);
//Conversion of two dimensional pixel arrry into one dimensional array
int intPixels1[] = new int [height * width];
int k = 0;
for(int i = 0; i <= width; i++) {
for(int j = 0; j <= height; j++) {
intPixels1[k] = img.samples[i][j];
int_image_object_arry_stream.writeInt((int) intPixels1[k]);
// System.out.println(intPixels1[k]);
k = k+1;
catch (Exception e) {
System.out.println("Exception in main() "+e.toString());
catch (Exception e) {
System.out.println("Exception in main() "+e.toString());
}

Answer 1

My Friend, you need to put your code within CODE tags
And I suspect if anyone would go through your code this way.
Assuming your problem is to write pixel values to a file you may use this,
      try{
        // Create file
        FileWriter fstream = new FileWriter("out.txt");
        BufferedWriter out = new BufferedWriter(fstream);
        for(int i =0; pixels.length() ; i++)
          out.write(pixels[i]+"\t");
       //Close the output stream
       out.close();
       }catch (Exception e){//Catch exception if any
      System.err.println("Error: " + e.getMessage());
    }