How to parse a two dimensional JSON array in java

Question

This is my json data

 {
    "tag1":["haaai ","hello"],

    "tag2":[["haai1","haai2"],["hello1","hello2","hello3"]]
 }

I can successfully read array tag1 using my java code

 JSONArray msg = (JSONArray) jsonObject.get("tag1");    
 Iterator<String> iterator = msg.iterator();

 while (iterator.hasNext()) {    
        String text = iterator.next();    
        System.out.println(text);
 }

But, I can't read the tag2 array using the above method. Any idea?

You have two seperate objects in your json; you have to retreive them seperately. Or re-think your json data structure, i.e. with a root object. — s.ijpma
– s.ijpma, Commented Jul 8, 2015 at 7:24

Codebender · Accepted Answer · 2015-07-08 07:22:18Z

3

You can't read using the same method because the format is different. You will have to use 2 loops instead.

 JSONArray msg = (JSONArray) jsonObject.get("tag2");    
 Iterator<JSONArray> iterator = msg.iterator();

 while (iterator.hasNext()) {
        Iterator<String> innerIterator = iterator.next().iterator();
        while (innerIterator.hasNext()) {
             String text = innerIterator.next();    
             System.out.println(text);
        }
 }

answered Jul 8, 2015 at 7:22

Codebender

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1 Comment

Abdul Manaf Over a year ago

its working fine. thanks for your valuable comments.

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