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JsonConfig cfg = new JsonConfig();   
           cfg.registerJsonValueProcessor(java.util.Date.class,new JsonValueProcessor() {   
            private final String format="yyyy-MM-dd";   
            public Object processObjectValue(String key, Object value,   
              JsonConfig arg2)   
            {   
             if(value==null)   
              return "";   
             if (value instanceof Date) {   
              String str = new SimpleDateFormat(format).format((Date) value);   
              return str;   
             }   
             return value.toString();   
            }   
  
            public Object processArrayValue(Object value, JsonConfig arg1)   
            {   
             return null;   
            }   
           });   
           
        Collection<JsonBean> list = JSONArray.toCollection(JSONArray.fromObject(jsonStr,cfg ), JsonBean.class);      
           
        JSONArray json = JSONArray.fromObject(votes,cfg);  

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