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POCannot read image in jar
 

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  1. POCannot read image in jar
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    <p>i have written a program to encrypt an image in Netbeans. The program works fine when running from netbeans but when i build it into a .jar file its not working, it cannot read the image even though i placed the image file in the same folder as the .jar file.</p> <pre><code> package test; import java.io.IOException; import java.io.File; /** * * @author AMaR */ public class Test { /** * @param args the command line arguments */ public static void main(String[] args) throws IOException, Exception { File EnImage = new File("encrypted.png"); File DeImage = new File("decrypted.png"); int[] pixels; LoadImage l = new LoadImage(); l.load(); pixels= l.getImagePixels(); RC4New rc4 = new RC4New(); int key[]= {13,2,4,6,}; // int data[]={5,10,90,5}; rc4.KSA(key); int[] text = rc4.PRNG(pixels); l.write((int)512,(int)512,text,EnImage); //RC4New rc41 = new RC4New(); rc4.KSA(key); int[] text1 = rc4.PRNG(text); l.write((int)512,(int)512,text1,DeImage); /* for(int i=0;i&lt;text.length;i++){ System.out.println(text[i]); } RC4New rc41 = new RC4New(); rc4.KSA(key); int[] text1 = rc4.PRNG(text); for(int i=0;i&lt;text1.length;i++){ System.out.println(text1[i]); } */ System.out.println("length:"+pixels.length); // l.write((int)512,(int)512,text); // TODO code application logic here } } </code></pre> <p>//encryption</p> <pre><code> package test; /** * * @author AMaR */ public class RC4New { int state[] = new int[256]; int j; /** * * @param key */ public void KSA(int[] key){ int tmp; for (int i=0; i &lt; 256; i++) { state[i] = i; } j=0; for (int i=0; i &lt; 256; i++) { j = (j + state[i] + key[i % key.length]) % 256; tmp = state[i]; state[i] = state[j]; state[j] = tmp; } } public int[] PRNG(int[] data){ int tmp,k; int i=0; j=0; int[] cipherText = new int[data.length]; for(int x=0;x&lt;data.length;x++){ i = (i + 1) % 256; j = (j + state[i]) % 256; tmp = state[i]; state[i] = state[j]; state[j] = tmp; k = state[(state[i] + state[j]) % 256]; cipherText[x]= (data[x] ^ k); } return cipherText; } } </code></pre> <p>//loading/writing image </p> <pre><code> package test; import java.awt.Dimension; import java.awt.image.BufferedImage; import java.awt.image.Raster; import java.io.IOException; import javax.imageio.ImageIO; import java.io.File; import java.awt.image.WritableRaster; /** * * @author AMaR */ public class LoadImage { BufferedImage image; void load()throws Exception { // FIle newfile = new File("lena.png) image = ImageIO.read(getClass().getResourceAsStream("lena.png")); } public Dimension getImageSize() { return new Dimension(image.getWidth(), image.getHeight()); } public int[] getImagePixels() { int [] dummy = null; int wid, hgt; // compute size of the array wid = image.getWidth(); hgt = image.getHeight(); // start getting the pixels Raster pixelData; pixelData = image.getData(); return pixelData.getPixels(0, 0, wid, hgt, dummy); } @SuppressWarnings("empty-statement") public void write(int width ,int height, int[] pixels,File outputfile) { try { // retrieve image BufferedImage writeImage = new BufferedImage(512, 512, BufferedImage.TYPE_BYTE_GRAY);; // File outputfile = new File("encrypted.png"); WritableRaster raster = (WritableRaster) writeImage.getData(); raster.setPixels(0,0,width,height,pixels); writeImage.setData(raster); ImageIO.write(writeImage, "png", outputfile); } catch (IOException e) { } } } </code></pre>
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    1. PO
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    1. This table or related slice is empty.
    1. PTQuestion
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    1. USuser1998915
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    1. This table or related slice is empty.
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    1. COWhat is the error you are getting? At which line?
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      1. POCannot read image in jar
      1. USRudolphEst
    2. COwhat is the exception you are getting?any logs?
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      1. POCannot read image in jar
      1. USchiru
    3. COFrom what I can read, you're not loading any images from an external resource, you're only loading them from within the Jar
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      1. USMadProgrammer
 

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