/* This method is used to generate a random password
*    @ params int - length of the password
*    @ return  String - random password
*/

public String generateRandomPassword(int length){
          String  passarry = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
          String passwd = "";
          for(int i = 0; i < length; i ++ ){
                 Random generator = new Random();
                 long range = 62;
                 int rnd = (int)(range * generator.nextDouble());
                 passwd = passwd + passarray.substring(rnd,rnd+1);
          }
          return passwd;
}