Strange behaviour while reading array in Android-Java -

i'm trying array of int values json, strange happening , different output when read same array on 2 places in code.

does know reason behind behaviour?

public linegraphseries<datapoint> fillgraph(string city, int numberofdays){     int data[] = new int[numberofdays*8];     datapoint[] temperatures = new datapoint[numberofdays*8];     linegraphseries<datapoint> graph;     string url = "http://api.worldweatheronline.com/free/v2/weather.ashx?q=" + city + "&format=json&num_of_days=" + numberofdays + "&cc=no&fx24=no&show_comments=no&tp=3&key=e74975c820b1f6506bd6b9fdea5a5";     jsonobject dataznetu;     jsonarray dataarray;     jsonobject datahourly;     jsonarray datahourlyarray;     try {         dataznetu = requestwebservice(url).getjsonobject("data");         dataarray = dataznetu.getjsonarray("weather");         for(int = 0; i<dataarray.length(); i++){             datahourly = dataarray.getjsonobject(i);             datahourlyarray = datahourly.getjsonarray("hourly");             for(int j = 0; j<datahourlyarray.length(); j++){                 data[i*j] = datahourlyarray.getjsonobject(j).getint("feelslikec");                 //temperatures[i*j] = new datapoint(i*j,data[i*j]);                 log.v("datacorrect" + i,string.valueof(data[i*j])); //correct values             }         }     }     catch (exception e) {         e.printstacktrace();     }     for(int = 0;i<data.length;i++){         log.v("databroken" + i/8,string.valueof(data[i])); //broken values     }      graph = new linegraphseries<datapoint>(temperatures);     return graph; } 

log:

05-15 02:05:50.609  13125-13125/com.example.tomus.weatherdresser v/datacorrect0﹕ 6  05-15 02:05:50.609  13125-13125/com.example.tomus.weatherdresser v/datacorrect0﹕ 5  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect0﹕ 12  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect0﹕ 18  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect0﹕ 19  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect0﹕ 20  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect0﹕ 16  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect0﹕ 14  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect1﹕ 10  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect1﹕ 7  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect1﹕ 16  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect1﹕ 20  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect1﹕ 24  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect1﹕ 24  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect1﹕ 18  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect1﹕ 15  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect2﹕ 11  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect2﹕ 11  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect2﹕ 15  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect2﹕ 16  05-15 02:05:50.619  13125-13125/com.example.tomus.weatherdresser v/datacorrect2﹕ 17  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/datacorrect2﹕ 17  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/datacorrect2﹕ 14  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/datacorrect2﹕ 11  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken0﹕ 11  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken0﹕ 7  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken0﹕ 11  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken0﹕ 20  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken0﹕ 15  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken0﹕ 24  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken0﹕ 16  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken0﹕ 15  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken1﹕ 17  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken1﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken1﹕ 17  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken1﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken1﹕ 14  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken1﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken1﹕ 11  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken1﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken2﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken2﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken2﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken2﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken2﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken2﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken2﹕ 0  05-15 02:05:50.629  13125-13125/com.example.tomus.weatherdresser v/databroken2﹕ 0 

you need change array declaration way accessing it. instead of using * or multiplication during initialization, multi-dimension array , use [][] instead of performing arithmetic operation on array.

 int [][]data = new int[numberofdays][8];  string url = "http://api.worldweatheronline.com/free/v2/weather.ashx?q=" + city + "&format=json&num_of_days=" + numberofdays + "&cc=no&fx24=no&show_comments=no&tp=3&key=e74975c820b1f6506bd6b9fdea5a5";  jsonobject dataznetu;  jsonarray dataarray;  jsonobject datahourly;  jsonarray datahourlyarray;     try     {       webcontext webcontext = new webcontext();       dataznetu = webcontext.downloadjson(url).getjsonobject("data");       dataarray = dataznetu.getjsonarray("weather");       for(int = 0; i<dataarray.length(); i++)       {         datahourly = dataarray.getjsonobject(i);         datahourlyarray = datahourly.getjsonarray("hourly");         for(int j = 0; j<datahourlyarray.length(); j++){           data[i][j] = datahourlyarray.getjsonobject(j).getint("feelslikec");           //temperatures[i*j] = new datapoint(i*j,data[i*j]);           log.v("datacorrect" + i,string.valueof(data[i][j])); //correct values         }       }     }     catch (exception e)     {       e.printstacktrace();     }     for(int = 0;i<data.length;i++)     {       log.v("databroken" + i/8,string.valueof(data[i])); //broken values     }