How To Create Exe File In Java?

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I know how to write exe files in 256 byte code but I'm not share if I trust you I will show you how to write bmp pictures in java

how to write a pictur I had a hard time I did lots of reverse engineering and hacking to figure out how to write a picture in pure computer code
All a computer understands is numbers lol
Offset    Size      Hex Value      Value     Description
42 4D     "BM"      Magic Number (unsigned integer 66, 77)
46 00 00 00    70 Bytes  Size of the BMP file
00 00     Unused    Application Specific
00 00     Unused    Application Specific
36 00 00 00    54 bytes  The offset where the bitmap data (pixels) can be found.
28 00 00 00    40 bytes  The number of bytes in the header (from this point).
02 00 00 00    2 pixels  The width of the bitmap in pixels
02 00 00 00    2 pixels  The height of the bitmap in pixels
01 00     1 plane   Number of colour planes being used.
18 00     24 bits   The number of bits/pixel.
00 00 00 00    0    BI_RGB, No compression used
10 00 00 00    16 bytes  The size of the raw BMP data (after this header)
13 0B 00 00    2,835 pixels/meter  The horizontal resolution of the image
13 0B 00 00    2,835 pixels/meter  The vertical resolution of the image
00 00 00 00    0 colours  Number of colours in the palette
00 00 00 00    0 important colours  Means all colours are important
Start of Bitmap Data
00 00 FF  0 0 255   Red, Pixel (0,1)
FF FF FF  255 255 255    White, Pixel (1,1)
00 00     0 0  Padding for 4 byte alignment (Could be a value other than zero)
FF 00 00  255 0 0   Blue, Pixel (0,0)
00 FF 00  0 255 0   Green, Pixel (1,0)
00 00     0 0  Padding for 4 byte alignment (Could be a value other than zero
If you want to know more about alignment padding
Its to do with the width of your picture
Like this 5 divided 4 = 1.25 is your padding your have .25 which is 00
Now remember this .25 is 00 .5 is 0000 .75 is 000000 and if 4 goes right dead on you don't need any padding or 0's after each line of colours
A bmp is written from the bottom up left to right
The size of the raw BMP data is the Start of Bitmap Data for each set of 2 numbers it counts as 1 bite there's 16 bytes of Bitmap Data on this picture
The offset where the bitmap data (pixels) can be found. This means how many bytes from the start of the file to where you put your bitmap data
Size of the BMP file this can be calculated by every 2 sets of numbers in the file add them together and you have the picture size in bytes
A bmp is backwards in red green blue its blue green red because its how stuff is put in a computer files are mostly read backwards on computer because first number in is the last one out
28 00 00 00 is how far it has to go to get to the Bitmap Data you even include this 28 00 00 00 string as 4 bytes all the way to the Bitmap Data witch is mostly 40 bytes
Heres a sample code 424D AE000000 0000 0000 36000000 28000000 06000000 06000000 0100 1800 00000000 78000000 130B0000 130B0000 00000000 00000000 FFFF00 FFFF00 FFFF00 FF0000 FF0000 FF0000 0000 FFFF00 FFFF00 FFFF00 FF0000 FF0000 FF0000 0000 FFFF00 FFFF00 FFFF00 FF0000 FF0000 FF0000 0000 FF0000 FF0000 FF0000 FFFF00 FFFF00 FFFF00 0000 FF0000 FF0000 FF0000 FFFF00 FFFF00 FFFF00 0000 FF0000 FF0000 FF0000 FFFF00 FFFF00 FFFF00 0000

java code

import javax.Swing.*;import java.Io.*;
Public class hex
{BufferedOutputStream bufferedOutput=null;
Public hex()
{WriteFile("424DAE000000000000003600000028000000060000000600000001001800000000007800000
0130B0000130B00000000000000000000FFFF00FFFF00FFFF00FF0000FF0000FF00000000FFFF00F
FFF00FFFF00FF0000FF0000FF00000000FFFF00FFFF00FFFF00FF0000FF0000FF00000000FF0000F
F0000FF0000FFFF00FFFF00FFFF000000FF0000FF0000FF0000FFFF00FFFF00FFFF000000FF0000F
F0000FF0000FFFF00FFFF00FFFF000000","test.Bmp");}
Public static void main(String[]args)
{new hex();}
Public void WriteFile(String hex,String f)
{hex=hex.Replace(" ","");
Try{bufferedOutput=new BufferedOutputStream(new FileOutputStream(f));
For(int loop=0;loop<=hex.Length()-1;loop=loop+2)
{int value=Integer.ParseInt(hex.Substring(loop,loop+2),16);
BufferedOutput.Write(value);}}
Catch(FileNotFoundException e)
{e.PrintStackTrace();}
Catch(IOException ex)
{ex.PrintStackTrace();}
Finally{try{if(bufferedOutput!=null)
{bufferedOutput.Flush();bufferedOutput.Close();}}catch(IOException e)
{e.PrintStackTrace();}}
JOptionPane.ShowMessageDialog(null,"Done Writeing File");}}

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