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Thread: java switch and if issue

  1. #1
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    Default java switch and if issue

    thats what I'm trying to do:

    * If user inputs 3, onscreen message should say "A triangle has 3 sides."
    * If user inputs 4, onscreen message should say "A rectangle has 4 sides."
    * If user inputs 5, onscreen message should see "A pentagon has 5 sides."


    and here is my code:

    import java.util.Scanner;


    public class helloWorld{


    public static void main(String[] args) {

    String userInputStringOfAngles; // Declare a variable of type String to capture user input
    int numberOfAngles; // Declare a variable of type int to hold the converted user input

    Scanner myInputScannerInstance = new Scanner(System.in); // Recognize the keyboard
    System.out.print("Please type the integer press Enter: "); // Prompt the user
    userInputStringOfAngles= myInputScannerInstance.next(); // Capture user input as string
    numberOfAngles = Integer.parseInt(userInputStringOfAngles); // Convert the string to a number in case this will be useful later



    }
    int numberOfAngles=3;// LINE 1. CODE TO DETERMINE WHETHER USER INPUT IS OUT OF BOUNDS GOES HERE
    String userInputStringOfAngles;
    switch (numberOfAngles){
    case '3' : userInputStringOfAngles="3"
    break;
    case '4': userInputStringOfAngles="4"

    break;
    case '5':userInputStringOfAngles="5"

    break;
    default :
    System.out.println("Invalid input");

    // LINE 2. SWITCH CODE TO PRINT CORRECT "SHAPE" MESSAGE BASED ON USER INPUT GOES HERE


    }
    }
    if (userInputStringOfAngles==3){
    System.out.println("A triangle has 3 sides. ");


    };

    else if (userInputStringOfAngles==4){
    System.out.println("A rectangle has 4 sides");

    };
    else if (userInputStringOfAngles==5){
    System.out.println("A pentagon has 5 sides");
    }
    else System.out.println("Invalid input");
    }};

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: java switch and if issue

    Do you have any specific java programming questions about your program?

    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: java switch and if issue

    You have many syntax errors. The first thing you need to do is to match up your braces {} and indent to clean up your code. That may help you figure out some of these errors.

    Regards,
    Jim

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