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lang-java
SecureRandominstead of theRandomclass. If passwords are generated on a server, it might be vulnerable to timing attacks.AB = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";and some other allowed chars.static Random rnd = new Random();inside the method?Randomobject in each method invocation? I don't think so.