Password generation in Java [closed]

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I want a password generator in Java using JAR file, which should meet standard password rules. It would be great if it was open source. Any suggestions?

Thanks

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less than a month ago, someone asked the same thing: Password generator in Java

this one is also very similar: How can I create a password?

this one too: Need a secure password generator recommendation

Some previous research is always good

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Try this : JPWGEN

http://hillert.blogspot.com/2008/09/jpwgen-password-generator-for-java.html

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private static final String charset = "0123456789abcdefghijklmnopqrstuvwxyz";
public static String getRandomPassword(int length) {
    Random rand = new Random(System.currentTimeMillis());
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < length; i++) {
        int pos = rand.nextInt(charset.length());
        sb.append(charset.charAt(pos));
    }
    return sb.toString();
}

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Take a lool at Md5PasswordEncoder and PasswordEncoder of acegi-security. And use it like:

public class SomeClass {

private PasswordEncoder passwordEncoder;

// other code   

public String generatePassword() {
    byte[] ab = new byte[1];
    Random r = new Random();
    r.nextBytes(ab);
    return passwordEncoder.encodePassword(new String(ab), null).substring(24);
}

}