Java generates a random Verification Code

Import java. AWT. color;
Import java. AWT. Font;
Import java. AWT. graphics;
Import java. AWT. image. bufferedimage;
Import java. Io. file;
Import java. util. Random;

Import javax. ImageIO. ImageIO;

/**
* Codeimagegenerator. Java
*
* @ Author <a href = "mailto: eroclu@gmail.com"> Andy Lu </a>
* @ Version 1.0
*/
Public final class codeimagegenerator {
Private Final Static int def_width = 60;
Private Final Static int def_height = 20;

Private string code;
Private int width;
Private int height;
Private bufferedimage image;

Public codeimagegenerator (){
This (def_width, def_height );
}

Public codeimagegenerator (INT width, int height ){
This. width = width;
This. Height = height;
Generatecodeimage ();
}

Private void generatecodeimage (){
// Create the image
Image = new bufferedimage (width, height, bufferedimage. type_int_rgb );
Graphics G = image. getgraphics ();

// Set the background color
G. setcolor (new color (0 xdcdcdc ));
G. fillrect (0, 0, width, height );

// Draw the border
G. setcolor (color. Black );
G. drawrect (0, 0, width-1, height-1 );

// Set the font
G. setfont (new font ("Times New Roman", Font. Plain, 18 ));

// Create a random instance to generate the Codes
Random random = new random ();

// Make some confusion
For (INT I = 0; I <50; I ++ ){
Int x = random. nextint (width );
Int y = random. nextint (height );
G. drawoval (X, Y, 0, 0 );
}

// Generate a random code
For (INT I = 0; I <4; I ++ ){
String Rand = string. valueof (random. nextint (10 ));
Code + = rand;
G. drawstring (RAND, 13 * I + 6, 16 );
}

G. Dispose ();
}

Public bufferedimage getimage (){
Return image;
}

Public String getcode (){
Return code;
}

Public static void main (string [] ARGs) throws exception {
File imgfile = new file ("codeimage.jpeg ");
Codeimagegenerator CIG = new codeimagegenerator ();
ImageIO. Write (CIG. getimage (), "Jpeg", imgfile );
}
}