```
java -cp out:out_private ru.fizteh.fivt.students.podoltseva.calculator.Calculator (2+3)*4
Exception in thread "main" java.util.NoSuchElementException
	at java.util.Vector.firstElement(Vector.java:485)
	at ru.fizteh.fivt.students.podoltseva.calculator.Calculator.reverseToPolishNotation(Calculator.java:149)
	at ru.fizteh.fivt.students.podoltseva.calculator.Calculator.main(Calculator.java:27)
```