int (Object left, Object right) { if (left != null && !(left instanceof String)) { return ((<warning descr="Casting 'left' to 'String' will produce 'ClassCastException' for any non-null value">String</warning>) left).length(); } if (!(right instanceof String)) { return ((<warning descr="Casting 'right' to 'String' will produce 'ClassCastException' for any non-null value">String</warning>) right).length(); } return 2; }