break and switch appears to execute all case statements

Question

In the latest stable release of Java and Eclipse (Kempler), entering the following code and executing it, assuming the package and class names exist:

package         


        

Answer 1

If a condition in a case block is true and there is no return or break, all the other case blocks will be executed regardless if the are true or not.

For a rule of thumb always put a break or return at the end of a case block and you will be 90% right.

switch (p) {
    case (1):
        x--;
        break;
    case (2):
        x = 2;
        break;
    case (3):
        x = 3;
        break;
    default:
        x++;
        break;
}