throw new IllegalArgumentException("Value is not an integer");
throw new IllegalArgumentException("Value for " + column + " is not an integer");
    public int getIntColumn(String column)    {        if (! hasColumn(column))            throw new IllegalArgumentException("No such column " + column);        String name = canonicalize(column);        if (isColumnNull(name))            return -1;        Object value = data.get(name);        if (value == null)            throw new IllegalArgumentException("Column " + column + " not present");        if (!(value instanceof Integer))            throw new IllegalArgumentException("Value is not an integer");        return ((Integer) value).intValue();    }