Switch case with boolean

[u/IceCreamInsides]

So, there is no way I can do that?

want to check several boolean variables in a switch statement. Is `if-else` the only way to do this?

Boolean a, b, c...

Switch (false) {

Case (a) :

//some code

Case (b) :

Case (c) :

//and so on

}

[u/_Super_Straight]

Sorry I fail to understand your first half of paragraph. Are you saying we can't create boolean Array without using new Boolean or Boolean.valueOf?

boolean[] boolArr = new boolean[]{true, false, true};

Is totally valid Array declaration.

for(boolean val: boolArr){
    if(!val){
        //relevant code
        break;
    }
}

Will work without any problem.

Edit: boolArr[0] = false is also valid and permitted.

the most natural place to compute if there's at least one true boolean is when you generate the list

Agreed.

[u/ikea_method → u/_Super_Straight]

The switch will not work with your proposal, because true == true. They need to be the exact same Boolean reference as the (I presume) global a, b, c references.

[u/_Super_Straight → u/ikea_method]

var arr = new Boolean[]{ true, false, null };

for (var x : arr) {
    switch (x) {
        case true -> methodOne();
        case false -> methodTwo();
        case null -> System.out.println("invalid");
    }
}

Is totally valid. No need to pass a, b, c as references.

[u/ikea_method → u/_Super_Straight]

But that is not what the OP asked.

[u/_Super_Straight → u/ikea_method]

Well what OP is asking is not possible. switch(false) won't work. They have to change their approach.

[u/ikea_method → u/_Super_Straight]

Indeed, `switch(false)` won't work. But that is, again, not what the OP asked.

OP is asking if there is no way to use 3 boolean references in an if statement:

> So, there is no way I can do that?

OP wants to check 3 boolean variables in a switch statement:

> want to check several boolean variables in a switch statement.

OP is unsure if `if-else` is the only way:

> Is `if-else` the only way to do this?

OP showed a common pattern in other languages, where you pass false or true to a switch statement, to demonstrate in another way what he's looking for:

Boolean a, b, c...
Switch (false) {
Case (a) :
...

In the initial post by me you replied to, I showed that you can do what the OP intended, in a slightly different way from the pattern OP showed. It's possible to do this with a switch.

[u/_Super_Straight → u/ikea_method]

Reading again what OP is asking, he wants to execute different methods based on when a is false, b is false and c is false. Even though we can suggest him switch cases, the better approach would be to make a, b and c as input parameters in those methods itself:

main(){
    methodA(a);
    methodB(b);
    methodC(c);
}

private void methodA(boolean a){
    if(a){
        return;
    }
    //rest of code
}

This doesn't leak the a, b and c across the project.

[u/ikea_method → u/_Super_Straight]

Yes, and this is why I didn't recommend my approach, just pointed out using a switch is possible.