Java Switch Case

Question

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

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

You have missed using "break;" instruction at the end of each case matching.

your code should be similar to the following

switch (beta){

case 3:alpha=alpha+3; break;

case 4:alpha=alpha+4; break;

case 5:alpha=alpha+5; break;

default:alpha=alpha+6;

}

In case of forgetting to add the "break;", once each case statement is matched the rest of the instruction under other case/default statements are also executed. Notice for default no break; is needed since there is nothing to be run after default condition