json - Android object collection having same value -

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i have json object in format { "result": { "name": "ram", "mark": "50" }, { "name": "ram", "mark": "60" }, { "name": "ram", "mark": "50" }, { "name": "ram", mark: "50" }, { "name": "ram", "mark": "50" }, { "name": "ram", "mark": "80" }, { "name": "ram", "mark": "50" } } . how collect same set of object having same marks in 1 list , other object having different marks in different list.please help..thanks in advance.

thats not valid json data,you can validate here putting json data. https://jsonformatter.curiousconcept.com/.

your json data should like:

{     "result": [{         "name": "ram",         "mark": "50"     },     {         "name": "raj",         "mark": "60"     },     {         "name": "ramesh",         "mark": "70"     },     {         "name": "manish",         "mark": "50"     },     {         "name": "priya",         "mark": "50"     },     {         "name": "shiv",         "mark": "80"     },     {         "name": "pankaj",         "mark": "50"     }] } 

and code is:

list list = new arraylist<string>(); json object json = new jsonobject(); if(json.has("result")){    jsonarray array = json.getjsonarray("result");    if(array.length() > 0){      for(int i=0;i<array.length();i++){      jsonobject result = array.getjsonobject(i);      list.add(result.getstring("mark"));   }  } }