I'm having some trouble with my switch statement

Question

Ok so I've been programming for a short time and I've already started making pretty nice programs. But when it comes to switches it's always luck when they actually work. I wrote this switch statement:

String answer1 = in.nextLine();

switch (answer1)
{
case 1:
        System.out.println("...");
        break;
case 2:
        System.out.println("...");
        break;
case 3:
        System.out.println("...");
        break;
}

And the switch labels next to the cases all said 'error cannot convert from int to string' could someone please help. Thanks Noob programmer~ Chase

The code didn't actually looked so sandwiched together it's just my iphone doin that — Chase Zandvliet, Jul 29 '15 at 02:29
If the code does not look right, you can click [edit] and change it. — Sergey Kalinichenko, Jul 29 '15 at 02:30

score 3 · Answer 1 · answered Jul 29 '15 at 02:32

3

You are trying to switch on a String, while the cases are ints. You need to parse the string before passing it to switch:

String answer1 = in.nextLine();
switch (Integer.parseInt(answer1)) {
    ...
}

answered Jul 29 '15 at 02:32

Sergey Kalinichenko

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score 1 · Answer 2 · answered Jul 29 '15 at 02:33

Strings in switch are supported only from Java 7.

http://docs.oracle.com/javase/7/docs/technotes/guides/language/strings-switch.html

If you are using Java 7 and above then

switch (answer1)
{
case "1":
        System.out.println("...");
        break;
case "2":
        System.out.println("...");
        break;
case "3":
        System.out.println("...");
        break;

else you have to convert it to int as shown in the answer by @dasblinkenlight

score 0 · Answer 3 · edited May 23 '17 at 12:06

0

You might need to verify the version of Java you're using. This was not possible on older versions of Java.

See: Why can't I switch on a String?

http://docs.oracle.com/javase/tutorial/java/nutsandbolts/switch.html

That is, if you intend to switch on String. See the below answer (@dasblinkenlight) if you do indeed expect an integer (You need to parse it).

edited May 23 '17 at 12:06

Community

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answered Jul 29 '15 at 02:31

Dynelight

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I'm having some trouble with my switch statement

3 Answers3