javaswitch-statementjava-13

Can there be multiple value assignments for the enhanced switch statement?

I'm trying to initialize two variables with an enhanced switch statement:

int num = //something

boolean val1;
String val2;

val1, val2 = switch(num) {
    case 0 -> (true, "zero!");
    case 1 -> (true, "one!");
    default -> (false, "unknown :/");
}

Is this possible?

Solution

  • Since you are already on Java-13, I would suggest refraining from using an additional library to represent a tuple and make use ofMap.entry(introduced in Java-9) with the syntactic sugar of local variable type var inferred.

    var entry = switch (num) {
    case 0 -> Map.entry(true, "zero!");
    case 1 -> Map.entry(true, "one!");
    default -> Map.entry(false, "unknown :/");
};
boolean val1 = entry.getKey();
String val2 = entry.getValue();