1 public boolean accountBalance(double accountBalance){ 2       3      String regex1 ="[1-9]+\\d+[.][0]"; 4      String regex2 ="[0][.]\\d+"; 5      String regex3="[1-9]+[.]\\d+"; 6      String account=String.valueOf(accountBalance); 7     double newbalance=Double.parseDouble(account); 8      //System.out.println("account-----------"+account); 9     // System.out.println("newbalance-----------"+newbalance);10 11      if(account.matches(regex1)||account.matches(regex2)||account.matches(regex3)){12 13          return true;14      }15     16     return false;17      18  }