A comma separates each variable.
public class MainClass{
public static void main(String[] arg){
long a = 999999999L, b = 100000000L;
int c = 0, d = 0;
System.out.println(a);
System.out.println(b);
System.out.println(c);
System.out.println(d);
}
}
999999999
100000000
0