Jagged array in java -

my final output should like:

how many rows in jagged array? 4 enter row, separated spaces: 9 2 14 5 8 enter row, separated spaces: 3 enter row, separated spaces: 15 23 enter row, separated spaces: 9 8 7 6 5 4 3  after funky operation, resulting array is:  9    4   42   20   40 6 45   92 36   40   42   42   40   36   30 

but keep getting errors:

exception in thread "main" java.util.nosuchelementexception: no line found     @ scannerhacked.nextline(scannerhacked.java:1525)     @ jagged.main(jagged.java:14) 

here code:

import java.util.scanner;  public class jagged {      public static void main(string[] args) {         scanner sc = new scanner(system.in);         system.out.print("how many rows in jagged array? ");         int row = sc.nextint();         int[][] jaggedarray = new int[row][];          for(int = 0; < row; i++)         {   scanner rows = new scanner(system.in);             system.out.print("enter row, separated spaces: ");             string arraystring = rows.nextline();             string []a = arraystring.split(" ");             jaggedarray[i] = new int[a.length];         for(int j = 0; j < jaggedarray[i].length; j++)         {             int y = integer.parseint(a[j]);             jaggedarray[i][j]  =  y;          }          }         system.out.println("after funky operation, resulting array is:");         (int = 0; < row; i++)         {             (int j = 0; j < jaggedarray[i].length; j++)             {                 if(jaggedarray[i][j] > 9)                 system.out.print("   "+(jaggedarray[i][j]*(i+j+1)) + "");                     else                 system.out.print("    "+(jaggedarray[i][j]*(i+j+1)) + "");             }             system.out.print("\n");         }        }  } 

as can see, using 2 scanner same source (system.in) in main() method...

scanner sc = new scanner(system.in); scanner rows = new scanner(system.in); 

it might throw exception, should close first scanner i.e. sc.close(); when going use scanner same source.