JSON array get length

Question

I can t get the array length of the JSON array  when I using length    method it is not working  it show as red underline in Netbeans   this is the source code    try            JSONObject myjson   JSONObject fromObject practiceInfoByUsername              JSONArray nameArray   myjson names            final JSONArray jar   myjson getJSONArray   types            for int i 0  i lt jar length    i                          String p   jar getString i               Log i  p  p                      catch  JSONException e                e printStackTrace

User · Answer

I came here and looking how to get the number of elements inside a JSONArray. From your question i used length() like that:

JSONArray jar = myjson.getJSONArray("_types");
System.out.println(jar.length());

and it worked as expected. On the other hand jar.size();(as proposed in the other answer) is not working for me.

So for future users searching (like me) how to get the size of a JSONArray, length() works just fine.

User · Answer

have you tried size     Something like    jar size      Hope it helps

User · Answer

At my Version the function to get the lenght or size was Count    You re Welcome  hope it help someone

User · Answer

The JSONArray length   returns the number of elements in the JSONObject contained in the Array  Not the size of the array itself

User · Answer

Note  if you re using importing  org json simple JSONArray  you have to use JSONArray size   to get the data you want  But use JSONArray length   if you re using org json JSONArray

User · Answer

The below snippet works fine for me I used the size     String itemId              for  int i   0  i  lt  itemList size    i                  JSONObject itemObj    JSONObject itemList get i               itemId  String  itemObj get  ItemId                System out println itemId                   If it is wrong to use use size   kindly advise

User · Answer

Check you have the line    import org json JSONArray    at the top of your source code

[java] JSON array get length

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