get number from string

/**
     * @param strNumber number as String type.
     * @return  number as Integer type.
     */
    private int getNumber(final String strNumber)
    {
	int number;
	try
	{
	 number = Integer.parseInt(strNumber);
	} catch (NumberFormatException   exception) {
	    exception.printStackTrace();
	    return -1;
	}
	return number;


    }