Question

I use this code in netBeans , it’s compilation error .

public class Main
{
public static void main(String[] args)
{
int a2[]={2,3},a3={4,5,3},a4={1,2,3,4};
int a1[][]={a2,a3,a4};
System.out.println(a1[0][1]+","+a1[1][2]+","+a1[2][3]);
}}

the I use the command prompt , and that’s not occurred any error ..
and I obtained this output

3,3,4

Answer 1

a3 and a4 both variable must be declared as array [] like a3[] and a4[].

int a2[]={2,3},a4[]={1,2,3,4}, a3[]={4,5,3};