My boolean variable could not be resolved into a variable in my while statement

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I want to make a code that repeats itself until the user types the word Game or the word Balance. I made a do while loop, but I'm getting an error with my while statement. The error is: error3 cannot be resolved into a variable. Does anyone know what's the problem with my code?

System.out.println("welcome to Roll the Dice!");
System.out.println("What is your name?");

Scanner input = new Scanner(System. in );
String Name = input.nextLine();

System.out.println("Welcome " + Name + "!");
System.out.println("Do you want to play a game or do you want to check your account's balance?");
System.out.println("For the game typ: Game. For you accounts balance typ: Balance");

do {
    String Choice = input.nextLine();
    String Balance = "Balance";
    String Game = "Game";
    input.close();

    boolean error1 = !new String(Choice).equals(Game);
    boolean error2 = !new String(Choice).equals(Balance);
    boolean error3 = (error2 || error1) == true;

    if (new String(Choice).equals(Game)) {
        System.out.println("Start the game!");
    }

    else if (new String(Choice).equals(Balance)) {
        System.out.println("Check the balance");
    }

    else {
        System.out.println("This is not an correct answer");
        System.out.println("Typ: Game to start a game. Typ: Balance to see your account's balance");
    }
}
while ( error3 == true );

error3 is defined inside the do scope. Move its declaration outside the do scope and set the value inside:

    boolean error3 = false;
    do {
        String Choice = input.nextLine();
        String Balance = "Balance";
        String Game = "Game";
        input.close();

        boolean error1 = ! new String(Choice).equals(Game);
        boolean error2 = ! new String(Choice).equals(Balance);
        error3 = error2 || error1; 

Note also that you can simplify (error2 || error1) == true to simply error2 || error1. The same can be done for your while statement:

while(error3);

Java, From looking at it I know it's outside of the scoop of the for statement My question is, how would I declare the finalAmount variable locally? Q: "eclipse is telling me my finalAmount variable can't be resolved" A: This is because you are declaring 'finalAmount' within the for loop. Once your for loop exits, 'finalAmount' goes out of scope. Meaning, Java has no clue it ever existed.

You're trying to read the value of error3 outside the scope of the loop body where it's declared:

while(error3 == true);

Simply declare it before the loop:

boolean error3 = true;
do {
    //...
    error3 = (error2 || error1) == true; 
    //...
}
while(error3 == true);

Java For Loop, For-Each Loop, While, Do-While Loop (ULTIMATE , loop is initialized at 100; boolean condition tests that the loop index is greater You can also use more than one variable in the loop initialization, test expression and for the step value. While loops are best used when you don't know how many times you have to loop over something. j cannot be resolved to a variable � 0 My boolean variable could not be resolved into a variable in my while statement Feb 16 '19 0 Why is the number value not initialized after the do while loop? Feb 20 '19

Because you defined the variable inside the do-while loop. Do this:

boolean error3=true;
do {
        String Choice = input.nextLine();
        String Balance = "Balance";
        String Game = "Game";
        input.close();

        boolean error1 = ! new String(Choice).equals(Game);
        boolean error2 = ! new String(Choice).equals(Balance);
        error3 = (error2 || error1) == true; 

        if (new String(Choice).equals(Game)){
            System.out.println("Start the game!");
        }

        else if(new String(Choice).equals(Balance)){
            System.out.println("Check the balance");
        }

        else{
            System.out.println("This is not an correct answer");
            System.out.println("Typ: Game to start a game. Typ: Balance to see your account's balance");
            }
    } 
    while(error3 == true);

How to fix "variable might not have been initialized" error in Java , You will not get this error if you just declare the local variable but will not use it. You can see we are trying to access variable "b" which is not initialized in the statement c = a + b, hence when you run problem: The local variable b may not have been initialized at Main.main(Main.java:14) glad it solved your problem. Turns out, it wasn’t the annotation, or anything else in Spring, or any of my code, or any of my Eclipse plugins. It was a step before that killed me. I was doing a little cleanup and I created a temp directory at the top of my project folder so I could move some files there. It wasn’t nested in anything, other than the top level directory.

Semantics, Variables can be defined using either their type (like String ) or by using the keyword while loop. Groovy supports the usual while {…} loops like Java: def x = 0 def y = 5 Groovy will call this method to coerce your object to a boolean value, e.g.: method calls are resolved at compile time, meaning that if a method is not� java,android,android-intent,uri,avd In my Android app, I have a button that when clicked, launches the external application of my choice to play a video (I gather that this is called an "implicit intent"). Here is the relevant Java code from my onCreate method.

[PDF] Macro Language Dictionary, %SUPERQ does not attempt to resolve a macro variable reference or a macro invocation library may not be installed at your site or may be a site-specific version. These examples illustrate expressions for the %DO %WHILE statement: Logical, or Boolean, expressions return a value that is evaluated as true or false. In. Hi, guys: I try to take the division operation on macro variables, but it does not work. Can you give me some idea how to do it. As a simple example, I have a variable, xx=5 and I want to generate yy that yy=1/xx=.2. Both variables are macro variables. My code is the following %let xx=5; %let

PEP 572 -- Assignment Expressions, This is a proposal for creating a way to assign to variables within an expression using Currently, this feature is available only in statement form, making it However, an assignment expression target name cannot be the same While it's technically possible to assign consistent semantics to these cases,� My focus was more on the closure not being inside of the loop than it being on the DOM event. I had in one draft of this mentioned bind but edited it out for sake of readability, this post really could be extended even more than it is but then what would be left to discuss in the comments.

Comments
  • Hi thank you for your answer. But I'm still getting an error i changed my code but he is currently giving me another error. at the line: boolean error3 = error2 || error1; The error is: Link all references for a local rename (does not change references in other files). Do you maybe know a solution for this error aswell? Thanks :)
  • Screenshot of the error? Sounds like a refactoring suggestion from an IDE, not a real error.
  • Actually, David below is correct. error3 = error2 || error1, you don't want the boolean at the beginning of that line.
  • Hi thank you for your answer. But I'm still getting an error i changed my code but he is currently giving me another error. at the line: boolean error3 = (error2 || error1) == true; The error is: Link all references for a local rename (does not change references in other files). When i run the code Eclipse says: duplicate local variable. Do you maybe know a solution for this error aswell? Thanks :)
  • @StijnKrabbenborg: Because you are trying to re-declare the error3 variable inside the loop. Don't re-declare it, use the existing variable like I do in the answer.
  • Hi thank you for your answer. But I'm still getting an error i changed my code but he is currently giving me another error. at the line: boolean error3 = (error2 || error1) == true; The error is: Link all references for a local rename (does not change references in other files). When i run the code Eclipse says: duplicate local variable. Do you maybe know a solution for this error aswell? Thanks :)
  • remove the type boolean from the variable inside the loop
  • Accepted answers help others to find the solution quickly.