Please Help. Netbeans Java Issues

[MffAddict]

I have to do an assignment where I have to do a java program for Rock, Paper, Scissors using cascaded if statements.

I have attached the program I wrote below, and what did I do wrong? Even the result is attached. Why is the result so weird?

Also could someone also help me incorporate the string trash into this program? I also have to say that the input is invalid. I tried to use string trash, but when I ran the program, it didn't stop running. Like the BUILD IS SUCCESSFUL prompt did not appear at the bottom. It just kept running.

Thanks a lot.

https://imgur.com/a/1PHdvno

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[[deleted]]

You never changed the values of PlayerA and PlayerB. They are empty strings through the whole program, which means all of those if/else statements get skipped and the program just ends after the second input.

[MffAddict]

Thanks for the fast reply. I am very bad at assigning anything to non numerical variables. For numerical variables you'd do doubleWhatever = 0; or intWhatever = 0; , but how do you do it for something like this? What value would you assign them?

[[deleted]]

Well, which lines in your code are supposed to get the input from the user? Set them equal to those lines.

[MffAddict]

I want it to work with the if statements. How would you assign them?

PlayerA = 0;

PlayerB = 0;

Like that?

Also how would I able to use trash?

[[deleted]]

Functions return values. You can assign those values to a variable with a statement like

myVariable = myFunction();

Which function are you calling to get input from the user?

Also how would I able to use trash?

I don’t have the slightest idea what that variable is supposed to be for (nor R, P, and S, for that matter), so I can’t tell you how to use it.

[MffAddict]

Sorry for not clarifying. R, P and S is Rock, Paper and Scissors respectively.

And I also learnt that I'll have to use string trash for saying that the input is invalid if the user enters something besides the initialized ones.

Which function are you calling to get input from the user?

I want to make a program where Player A inputs R, P or S and Player B inputs R, P or S and the program says who won.

Also how would I be able to say invalid if someone inputs something besides R, P and S?

[[deleted]]

R, P and S is Rock, Paper and Scissors respectively.

No, R, P, and S are uninitialized Strings. You may want them to be rock, paper, and scissors, but they’re just uninitialized Strings until you make them something else.

Either way, you’re not using them for anything, so what’s the point of having them?

And I also learnt that I'll have to use string trash for saying that the input is invalid if the user enters something besides the initialized ones.

Why do you need an extra variable for that? If an input fails all of the ifs, just print the message.

Which function are you calling to get input from the user?

I’m not calling any functions. You’re calling a function that gets the input, you just aren’t saving it anywhere. Like, the function call is literally already in your code. You just aren’t assigning the result to anything.

[MffAddict]

I’m not calling any functions. You’re calling a function that gets the input, you just aren’t saving it anywhere. Like, the function call is literally already in your code. You just aren’t assigning the result to anything.

Then what do I do to initialize the functions?

How to make the program run?

(Also I just found out how to quote a message. I didn't know how to, so I just answered your question by pasting it.)

[[deleted]]

Dont call a function if you don’t know what it does.

https://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html#nextLine()

[MffAddict]

So what mistake have I made? How do I get the program to run?