임시비밀번호 만들기

간단함.. *.* length는 말그대로 비밀번호 길이 값을 아무렇게나..

 

public class RandomPassWord {  public static void main(String[] args) {   String password = randomPassword(10);   System.out.println("임시비밀번호: " + password);  }    public static String randomPassword (int length) {   int index = 0;   char[] charSet = new char[] {        '0','1','2','3','4','5','6','7','8','9'        ,'A','B','C','D','E','F','G','H','I','J','K','L','M'        ,'N','O','P','Q','R','S','T','U','V','W','X','Y','Z'        ,'a','b','c','d','e','f','g','h','i','j','k','l','m'        ,'n','o','p','q','r','s','t','u','v','w','x','y','z'        ,'!','@','#','$','%','^','&','*','(',')'};      StringBuffer sb = new StringBuffer();   for (int i=0; i < length; i++) {    index =  (int) (charSet.length * Math.random());    sb.append(charSet[index]);   }      return sb.toString();     } }