Calling an enum variable in Java

Question

I'm working on a JPanel project where you play the computer in Rock, Paper, Scissors. I'm using an enum for the choices. I have it set up like so

enum Choices {rock, paper, scissors}

And now, to set the "players choice" to be whatever button they press, I have

if (event.getSource() == rock){        //Makes it so when you press rock button, your choice is rock
    Choice playerChoice = Choice.rock; 
}

But now when I try to do

if (playerChoice == Choice.rock)
    if (cpuChoice == Choice.scissors)
        playerWon = true;

.. and so on for each of the options, I get an error on "playerChoice" saying it cannot find symbol. Any ideas? Thanks in advance!

Edit: It was suggested "Using variables outside of an if statement", but on that, the person was initializing and instantiating the variable inside. I have already initialized it the enum.

BlackHatSamurai · Accepted Answer · 2016-12-06T18:14:39.973

1

You need to change the scope of your Choice playerChoice.

So do:

Choice playerChoice
if (event.getSource() == rock){ 
   playerChoice = Choice.rock; 
}

if (playerChoice == Choice.rock)
    if (cpuChoice == Choice.scissors)
        playerWon = true;

edited Dec 06 '16 at 18:14

answered Dec 06 '16 at 18:09

BlackHatSamurai

23,275
22
95
156

Sorry, that was a typo. the enum name and the test are the same, I did not mean to add the "s" in the enum name – Cythix Dec 06 '16 at 18:12
@Cythix I updated my answer. – BlackHatSamurai Dec 06 '16 at 18:16
That fixed it! Thank you very much – Cythix Dec 06 '16 at 18:18

Calling an enum variable in Java

1 Answers1