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Thread: Error in block Scope ecample

  1. #1
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    Default Error in block Scope ecample

    Hi all,
    I am a beginner in programming and learning java using texteditor. I am getting an error in a program. Please tell me what's wrong in the below code.


    // Demonstrate block scope.
    class Scope {
    public static void main(String args[]) {
    int x; // known to all code within main
    x = 10;
    if(x == 10) { // start new scope
    int y = 20; // known only to this block
    // x and y both known here.
    - 46 -
    System.out.println("x and y: " + x + " " + y);
    x = y * 2;
    }
    // y = 100; // Error! y not known here
    // x is still known here.
    System.out.println("x is " + x);
    }
    }


  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Error in block Scope ecample

    When posting code, please use the highlight tags to preserve formatting.

    What exact error are you getting? You have it commented with exactly why you'd get an error, so what are you confused about?
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  3. #3
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    Default Re: Error in block Scope ecample

    Quote Originally Posted by KevinWorkman View Post
    When posting code, please use the highlight tags to preserve formatting.

    What exact error are you getting? You have it commented with exactly why you'd get an error, so what are you confused about?
    Hello, sorry for my posting mistakes..!
    // Demonstrate block scope.
    class Scope {
    public static void main(String args[]) {
    int x; // known to all code within main
    x = 10;
    if(x == 10) { // start new scope
    int y = 20; // known only to this block
    // x and y both known here.
    - 46 -
    System.out.println("x and y: " + x + " " + y);
    x = y * 2;
    }
    // y = 100; // Error! y not known here
    // x is still known here.
    System.out.println("x is " + x);
    }
    }

    In above example it is showing me the error in the line 5 and the error is : Scope.java:5: ';' expected
    If(x==10){
    ^
    1 error

    Tool completed with exit code 1

  4. #4
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Error in block Scope ecample

    You still haven't used the highlight tags. But your error might have something to do with the random "- 46 -" you have in the middle of your code?
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    Default Re: Error in block Scope ecample

    I removed it but still it is showing me that error.

  6. #6
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Error in block Scope ecample

    Please post the updated code, inside highlight tags, so we're all looking at the same thing. Are you sure you're recompiling the correct file?
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  7. #7
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    Default Re: Error in block Scope ecample

    You have declared the y variable inside the if statement therefore you cannot access outside the if statement.
    Improving the world one idiot at a time!

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