This is a correct way to do login form auto-focus, checking to see if either username or password have focus already. This prevents someone from typing a username hitting TAB, then having JavaScript chime in, resetting focus to Username while user is typing in their password. In this case, the password is appended to the username which is in plaintext.

Change logs

-> length calculated from the array
-> charachters will not be repeated in the password

This litle snippet shows how to store passwords and then check inputed passwords if they are correct.

(In this snippet we use som pseduo code for the database connection).

Method for get n random number's

Convert
java.awt.Canvas to java.awt.image.BufferedImage or java.awt.image.Image

Snippet for display one frame in full screen mode.

Convert java.awt.Canvas to java.awt.image.BufferedImage

Convert InputStream to byte[]

Search file directory (recursive method) with java language

This class uses reflection to locate option setters. Client class must contains methods setFile (to receive file names from the command line) and setOption### (to receive option ###).

(See also adapter-based implementation)