Java Switch Statement

if-statement, java, switch-statement

Solution

i would recommend to define exactly what staments should be executed:

switch (variable){
    case A: 
        statement_1();
        statement_3();
        break;
    case B: 
        statement_2();
        statement_3();
        break;
}

for Update-3:

create methods for those 10 lines:

public void statement_1() {
    //your 10 lines of code
}

if you're always executing statement_3, except for case C you can go with if/else-blocks as you wrote them.

but in my honest opinion: define EXACTLY what has to be done in which case if you have a small amount of cases. it is easier to read for others

Problem

I have a problem using switch statement when I tried to deal with a special situation. For example, I have 3 cases: A, B, C. - for A, I want to do statement_1 and statement_3. - for B, I want to do statement_2 and statement_3. - for C, I want to do nothing if I use if-else statement, it will look like the following: ``` if ( not C){ do statement_3 if B do statement 2 else if A do statement 1 } ``` If I want to use switch statement to do the same thing, I have some trouble. ``` switch (variable){ case A: do statement_1 case B: do statement_2 // how to do statement 3 here? } ``` I am trying to avoid the duplicated codes. So I am thinking that how to make the codes as simple as I can. UPDATE 1： to make my codes/question more clear, I just want to make my codes as simple/clear as I can, that is why I want to use switch statement instead of if-else. Also, I heard that switch-statement is usually faster than if-else. (I am not 100% sure though). I want to use switch-case because Case A, B, C are enum type. they are not variable. Sorry about the confusion. each statements are more than 10 lines of codes. That is why I do not want to do the followings: ``` switch (enum variable) { case A: statement1 statement3 break; case B: statement2 statement3 break; ``` }

Original source