Make a switch case execute previous cases

Question

My code looks like:

    switch(read.nextInt()){
        case 1:
            //do "a" and print the result
            break;
        case 2:
            //do "b" and print the result
            break;
        case 3:
            //do "a" and print the result
            //do "b" and print the result
    }

Is there another way to do it without simply copying what's inside case 1 and 2? I just started my graduation, so I can only use String and Scanner for this, thanks :)

Answer 1

Define two methods called doA() and doB() and call them. This way you won't duplicate your code. Also are you sure you don't need break statements after each case statement?

    switch(read.nextInt()){
        case 1:
            doA();
            break;
        case 2:
            doB();
            break;
        case 3:
            doA();
            doB();
            break;
        default:
            // do something
            break;
    }