daily WTF

join.java

 public static String join(List<?> list, String delim) {
        StringBuilder buf = new StringBuilder();
        int num = list.size();
        for (int i = 0; i < num; i++) {
            if (i != 0)
                buf.append(delim);
            if (list.get(i) instanceof String)
                buf.append(list.get(i));
            else if (list.get(i).getClass() == Integer.TYPE || list.get(i).getClass() == Integer.class)
                buf.append(Integer.toString(((Integer) list.get(i))));
        }
        return buf.toString();
 }

but that cast has to be in there because list.get() returns an Object without a better generic, doesn’t it?
edit: which is then coerced to the primitive because Integer.toString() expects an int… omg

At least he was using a StringBuilder…