判断对象为空

public boolean isEmpty(Object object) {    if (object == null)        return true;    if (object instanceof String)        return ((String) object).trim().length() == 0;    if (object.getClass().isArray())        return Array.getLength(object) == 0;    if (object instanceof Collection)        return ((Collection<?>) object).isEmpty();    if (object instanceof Map)        return ((Map<?, ?>) object).isEmpty();    return false;}