GenaratePassword.java

As the name suggests -- this snippet generates an 8-letter password (that's all).

public class GeneratePassword
{
    public static void main(String args[])
    {
 String alphanumeric="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
 int len=alphanumeric.length();
 for(int i=0;i<8;i++)
     {
  int index=(int)Math.floor(Math.random()*len);
  System.out.print(alphanumeric.charAt(index));
     }
    }
}