Why is the output of the code 14, not 8 : alpha=3+5=8?

Question

public class Application4{

public static void main(String[] args) {
int alpha=3;
int beta=5;

switch (beta){
case 3:alpha=alpha+3;
case 4:alpha=alpha+4;
case 5:alpha=alpha+5;
default:alpha=alpha+6;

}

System.out.println(alpha);
}
}

Answer 1

I think you forgot a break; statement, so calculation falls through to the next step.

Answer 2

you have to put break; after each case like this:
int alpha=3;
int beta=5;
switch (beta){
case 3:alpha=alpha+3;
break;
case 4:alpha=alpha+4;
break;
case 5:alpha=alpha+5;
break;
default:alpha=alpha+6;
break;
}
System.out.println(alpha);

Answer 3

No this was on question paper, So as the previous code is not correct, does it skips to the last step?