public void processCase(String key, Label end) { push((int)key.charAt(key.length() - 1));
public void processCase(Object key, Label end) { String string = (String)key; push((int)string.charAt(string.length() - 1));
                    public void processCase(String key, Label end) {                        push((int)key.charAt(key.length() - 1));                        goTo(end);                    }