can not initialize a two dimensional array in java using for loop

Question

I can not initialize a two dimensional array using for loop

import java.util.Scanner;

   public class Quater{
      public static void main(String[] args){
        //declare an array
        double product[][]=new double[3][2];

        //declare a Scanner object
        Scanner userInput=new Scanner(System.in);

        //ask the user for input

        System.out.println("Please enter your data");
        for(int i=0;i<=1;i++)
        {
          for(int j=0;j<=2;j++){
          System.out.println(" enter your data");

          product[i][j]=userInput.nextDouble();
        } 
      }
    }
  }

The problem is when I try to enter the third number, This shut down and not working, however, if I make it new double[100][100], this can work and allow me to enter 6 number.

Answer 1

The outer cycle iterates over rows and inner over columns, therefore you need to have an array of dimensions double[2][3], not double[3][2] that you use.

Answer 2

If you make your array new double[3][2], then you can access product[i][j] where i goes up to 3-1=2, and j goes up to 2-1=1. That is, the bounds of the indexes in the same order in which they appear in the new. But you're trying to access product[i][j] where j is 2.