Java Console simulation Verification code process

Tag:java    Verification Code     console    public   

public class test2 {/** *  Verification Code Learning  *  @param  args *  @throws  ioexception  */public static void main (String[] args)  throws  ioexception {char[] ch =  "ABCDEFGHIGKLMNQRSTUVWXYZabcdefghigklmnopqrstuvwxyz0123456789". ToCharArray (); Random rand = new random ();int index = 0; string s =  ""; for (int i=0;i<4;i++) {index = rand.nextint; s+= Character.tostring (Ch[index]);} System.out.println (s); System.out.println ("Please enter:"); byte[] b = new byte[1024];int n = system.in.read (b); String ss = new string (B, 0, n); SYSTEM.OUT.PRINTLN (ss); Ss = ss.touppercase (); S = s.touppercase ();ss =  Ss.substring (0,&NBSP;4); SYSTEM.OUT.PRINTLN (ss), if (S.equals (ss)) {System.out.println ("Success");} Else{system.out.println ("Failed");}}}

public class Test3 {/** * generate picture * @param args * @throws ioexception */public static void Main (string[] args) throws Ioexce ption {bufferedimage image = new BufferedImage (+, BUFFEREDIMAGE.TYPE_INT_RGB); Graphics g = Image.getgraphics (); G.setcolor (new Color (254,255,80)); G.fillrect (0, 0, +); G.setcolor (color.red); G.setfont (New Font ("Arial", Font.Bold)), g.drawstring ("Hello World", +), g.drawimage (image, 0, 0, NULL); Mageio.write (image, "JPG", New File ("c://.."));}}

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Java Console simulation Verification code process