How to check if random password is unique ??

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#8118

From: Russell
Date: Thu, 19 Apr 2001 10:55

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  Hi all ,
  I am using RedHat6.1 and jdk1.3.

  I have code below :

  public void generatePassword(){

   StringBuffer strbuff = new StringBuffer();

   for(int i = 0 ; i < 6 ; i++){
     
strbuff.append(alphabets.charAt((int)(Math.random()*(alphabets.length()
- 1))));
    }
  }

  As you all know ,the code below random generate password . However how
i am going to check if the generate password is
  unique if the code is run by two threads ??

  Anybody have any ideas ?? Thanks wt.

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