Metoda parseInt() iz klase Integer može da vrati izuzetak ukoliko ne može da parsira proslijeđeni String. U suštini, za sve stvari koristiti Javinu dokumentaciju, a ako pogledaš specifikaciju ove metode, vidjećeš da baca izuzetak
NumberFormatExceptionParses (if the string does not contain a parsable integer.). Evo šta piše u dokumentaciji"
public static int parseInt(String s) throws NumberFormatExceptionParses
the string argument as a signed decimal integer. The characters in the string must all be decimal digits, except that the first character may be an ASCII minus sign '-' ('\u002D') to indicate a negative value. The resulting integer value is returned, exactly as if the argument and the radix 10 were given as arguments to the parseInt(java.lang.String, int) method.
Parameters:
s - a String containing the int representation to be parsed
Returns:
the integer value represented by the argument in decimal.
Throws:
NumberFormatException - if the string does not contain a parsable integer.
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