Internship: tool class writing for type judgment

Integrate most of the data types that need to be judged into a tool class , Just call the method directly ;

 /** *  Is the object not empty  */
    public static boolean isNotEmpty(Object o) {
    
        return !isEmpty(o);
    }

    /** *  Whether the object is empty  */
    @SuppressWarnings("rawtypes")
    public static boolean isEmpty(Object o) {
    
        if (o == null) {
    
            return true;
        }
        if (o instanceof String) {
    
            if (o.toString().trim().equals("")) {
    
                return true;
            }
        } else if (o instanceof List) {
    
            if (((List) o).size() == 0) {
    
                return true;
            }
        } else if (o instanceof Map) {
    
            if (((Map) o).size() == 0) {
    
                return true;
            }
        } else if (o instanceof Set) {
    
            if (((Set) o).size() == 0) {
    
                return true;
            }
        } else if (o instanceof Object[]) {
    
            if (((Object[]) o).length == 0) {
    
                return true;
            }
        } else if (o instanceof int[]) {
    
            if (((int[]) o).length == 0) {
    
                return true;
            }
        } else if (o instanceof long[]) {
    
            if (((long[]) o).length == 0) {
    
                return true;
            }
        }
        return false;
    }

    /** *  Whether there is an empty object  */
    public static boolean isOneEmpty(Object... objects){
    
        for (Object object : objects) {
    
            boolean empty = isEmpty(object);
            if(empty){
    
                return true;
            }
        }
        return false;
    }

    /** * map turn list * @param map * @return */
    public static List mapTransitionList(Map map) {
    
        List list = new ArrayList();
        Iterator iter = map.entrySet().iterator();
        while (iter.hasNext()) {
    
            Map.Entry entry = (Map.Entry) iter.next();
            list.add(entry.getKey());
            list.add(entry.getValue());
        }
        return list;
    }