Dynamically generating JPG files directly with java command line

/**


* Jerugraphics v 1.0


*


* See some examples of dynamically generating images are all servlet-completed,


* and the program is very long, feel is not whether from the practicality or readability is not too good.


* Here is a snippet of code that generates an image file on the command line. Is this simple and easy to use?


*


* Create a BufferedImage object, put your "painting" into this buffer,


* Then open a file, encode the image stream and enter the file, so there is a


* jpg file appears, try it ...


*　


* Mender:


* Jeru Liu


* Homepage:


* http://javaren.126.com


* Email:jeru@163.net


*


* This is just a sample program, nothing practical, but very reference value.


*


*/


import java.io.*;


import java.util.*;


import com.sun.image.codec.jpeg.*;


import java.awt.image.*;


import java.awt.*;


public class Jerugraphics {


bufferedimage image;


//create JPG files to the specified path


public void Createjpg (String path) {


try {


FileOutputStream fos = new FileOutputStream (path);


bufferedoutputstream bos = new Bufferedoutputstream (FOS);


JPEGImageEncoder encoder = jpegcodec.createjpegencoder (BOS);


Encoder.encode (image);


Bos.close ();


} catch (FileNotFoundException Fnfe) {


System.out.println (FNFE);


} catch (IOException IoE) {


System.out.println (IoE);


　　}


　}　


public static void Main (string[] args) {


int width=400, height=200;


int xlength=300, ylength=150;


int count=5;


vector data=new vector ();


data.addelement (New Integer (100));


data.addelement (New Integer (120));


data.addelement (new Integer (150));


Data.addelement (New Integer (40));


data.addelement (New Integer (5));


jerugraphics JG = new Jerugraphics ();


jg.image = new BufferedImage (width, height, bufferedimage.type_int_rgb);


Graphics g = jg.image.getGraphics ();


//Draw coordinates


G.setcolor (Color.White);


g.fillrect (0, 0, width, height);


G.setcolor (Color.Blue);


G.drawline (10,height-10,10,height-10-ylength);


G.drawline (10,HEIGHT-10,10+XLENGTH,HEIGHT-10);


//Wired


int yto;


int yfrom = ((Integer) (Data.elementat (0)). Intvalue ();


for (int i=1; i<count; i++) {


yto= ((Integer) (Data.elementat (i)). Intvalue ();


G.drawline (10+i*xlength/count,height-10,10+i*xlength/count,height-15);


G.drawline (10+ (i-1) *xlength/count,yfrom,10+i*xlength/count,yto);


Yfrom=yto;


　　}


jg.createjpg ("d:\\aaa.jpg");


　}


}