java - Out of bounds array into multidimentional array -

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• how avoid arrayindexoutofboundsexception or indexoutofboundsexception? [duplicate] 2 answers

i'm trying program store 1 dimentional array 2 dimentions because have product id's , amount of units sold. it's telling me array out of bounds in loop. tried many ways can't single dimentional array go multidimentional array. spent 2 days trying figure out this. please me! , yes have right imports, i'm not including them in here.

class productcalculator {    public static void main(string[] args) {      string csvfile = "/users/garre_000/desktop/comp 182/sales data.csv";     bufferedreader br = null;     string line = "";     string cvssplitby = ",";        try {          br = new bufferedreader(new filereader(csvfile));         while ((line = br.readline()) != null) {              string[] productsales = line.split(cvssplitby);              system.out.println(productsales[0] + " " + productsales[1]);             //system.out.println(productsales[0][0] + productsales[0][1]);                (int = 2; <= productsales.length; i+=2) {                 int x = integer.parseint(productsales[i]);                 int z = integer.parseint(productsales[i++]);                  int[][] multiproduct = new int[x][z];                 system.out.println(multiproduct[0][0]);             }         }      } catch (filenotfoundexception e) {         e.printstacktrace();     } catch (ioexception e) {         e.printstacktrace();     } {         if (br != null) {             try {                 br.close();             } catch (ioexception e) {                 e.printstacktrace();             }         }     }      system.out.println("done");     } } 

for (int = 2; <= productsales.length; i+=2) {   int x = integer.parseint(productsales[i]);   int z = integer.parseint(productsales[i++]); 

you need able read @ least 2 elements productsales in loop body here - however, current loop guard, run body , including i == productsales.length, try read:

productsales[productsales.length]      // 1 beyond end of array productsales[productsales.length + 1]  // 2 beyond end of array 

hence, need loop guard be:

for (int = 2; < productsales.length - 1; += 2) {