Re: Change decimal color code on the fly

From:

Bob <bherbst65@hotmail.com>

Newsgroups:

comp.lang.java.help

Date:

Fri, 16 Nov 2012 12:23:01 -0800 (PST)

Message-ID:

<45427dcf-14ec-4f54-bb6f-862a8263c52b@googlegroups.com>

On Friday, November 16, 2012 11:05:12 AM UTC-5, Bob wrote:

Hi All,

While making a datafile of decimal color pixel

codes for a small image, I want to change

a particular String number that will go into the datafile

to a different String number.

I am doing this before it is added to the

ArrayList. It does not seem to work and I need

to know why. Below is my test to identify

the String number and looking for the "if"

statement to recognize it"

Here is a snip of my code:

....

      mSet = redStr + greenStr + blueStr;

      System.out.println(mSet);//this is successful

      mSetx= "255255255";

      if (mSet == mSetx) {

         System.out.println("yes, recognized");

         //mSet = ("113000000");

      }

      colorpxl.add(mSet);// ArrayList

      mSet = "";

Thanks in advance for your response.

Bob

Hi Eric,
There might quite a few "oops"
as this is a work in progress.

Bob

import java.awt.Component;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
import java.util.ArrayList;
import java.awt.event.*;
import java.awt.image.*;
import java.io.ObjectOutputStream;
import java.io.IOException;
import java.io.FileOutputStream;

public class BufferedImageSto extends Component {
   ArrayList<String> colorpxl = new ArrayList<String>();
   ArrayList<String> dimensions = new ArrayList<String>();

   String alphaStr, redStr, greenStr, blueStr, wStr, hStr, mSet,mSetx;

   public static void main(String[] foo) {
      new BufferedImageSto();
   }

   public void printPixelARGB(int pixel) {

      int alpha = (pixel >> 24) & 0xff;
      alphaStr = Integer.toString(alpha);

      int red = (pixel >> 16) & 0xff;
      redStr= Integer.toString(red);
      if (redStr.length() < 2) {
         redStr = "0" + redStr;}
      if (redStr.length() < 3) {
         redStr = "0" + redStr;}

      int green = (pixel >> 8) & 0xff;
      greenStr= Integer.toString(green);
      if (greenStr.length() < 2) {
         greenStr = "0" + greenStr;}
      if (greenStr.length() < 3) {
         greenStr = "0" + greenStr;}


      int blue = (pixel) & 0xff;
      blueStr= Integer.toString(blue);
      if (blueStr.length() < 2) {
         blueStr = "0" + blueStr;}
      if (blueStr.length() < 3) {
         blueStr = "0" + blueStr;}

      mSet = redStr + greenStr + blueStr;
      mSetx= "121000000";
      if (mSet.equals( mSetx)) {
         mSet = "";
         mSet= Integer.toString (255255255);
         System.out.println("revision "+ mSet);
      }

      //System.out.println(mSet);
      colorpxl.add(mSet);
      mSet = "";
   }

   private void marchThroughImage(BufferedImage image) {
      int w = image.getWidth();
      String wStr= Integer.toString(w);
      int h = image.getHeight();
      String hStr = Integer.toString(h);
      dimensions.add(wStr);
      dimensions.add(hStr);

      System.out.println("width, height: " + w + ", " + h);

      for (int i = 0; i < w; i++) {
         for (int j = 0; j < h; j++) {
            // System.out.println("x,y: " + j + ", " + i);
            int pixel = image.getRGB(i, j);
            printPixelARGB(pixel);
            System.out.println("");
         }
      }

      String respName = "ColorPixlData.txt";
      System.out.println("File Saved as "+ respName);
      System.out.println(respName);
      try {
         FileOutputStream fout = new FileOutputStream(respName);
         ObjectOutputStream out = new ObjectOutputStream(fout);
         out.writeObject(dimensions);
         out.writeObject(colorpxl);
         out.flush();
         out.close();
         repaint();
      }
      catch (IOException e) {e.printStackTrace();
      }
   }

   public BufferedImageSto() {
      try {
         // get the BufferedImage, using the ImageIO class
         BufferedImage image = ImageIO.read(this.getClass().getResource("MH0x.png"));
         marchThroughImage(image);

      } catch (IOException e) {
         System.err.println(e.getMessage());
      }
   }
}