This is what I have so far:

I don't know how to create the 2 dimensional array that accesses the other one dimensionals and also I know that my product int is wrong. Any help is greatly appreciated.

public class Mult { public static void main(String[] args){ int M1[] = new int[13]; int M2[] = new int[12]; int M3[][] = ; for (int i = 2; i < M1.length; i+=2){ } for (int j = 1; j < M2.length; j+=2) { } int product = M1[i]*M2[j]; System.out.println(M3); } }