|  |  | 
 |  |  |             if (i < 10) { | 
 |  |  |                 Object o = hnMap1.get(s + "-" + month + "-0" + i); | 
 |  |  |                 String s1 = JSON.toJSONString(o); | 
 |  |  |                 if (s1.equals("null")){ | 
 |  |  |                     list2.add(0.0); | 
 |  |  |                     continue; | 
 |  |  |                 } | 
 |  |  |                 Map map1 = JSON.parseObject(s1, Map.class); | 
 |  |  |                 String pm2_5 = map1.get("PM2_5").toString(); | 
 |  |  |                 list2.add(Double.parseDouble(pm2_5)); | 
 |  |  |             } else { | 
 |  |  |                 Object o = hnMap1.get(s + "-" + month + "-" + i); | 
 |  |  |                 String s1 = JSON.toJSONString(o); | 
 |  |  |                 if (s1.equals("null")){ | 
 |  |  |                     list2.add(0.0); | 
 |  |  |                     continue; | 
 |  |  |                 } | 
 |  |  |                 Map map1 = JSON.parseObject(s1, Map.class); | 
 |  |  |                 String pm2_5 = map1.get("PM2_5").toString(); | 
 |  |  |                 list2.add(Double.parseDouble(pm2_5)); |