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Thread: Creating a new class and dont know how to generate a random number math code

  1. #1
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    Default Creating a new class and dont know how to generate a random number math code


    I am creating a new class the calculates random integers in simplistic mathematical operations for school. Bellow I have copy/paste my code from JGRASP, I have commented on the two portions that are not performing correctly. The first error message in correlation to the first portion that I commented on as being a mistake states the following:

    PrintingIntCalculator.java:4: error: illegal start of type
    import java.until.Random;
    ^
    PrintingIntCalculator.java:4: error: ';' expected
    import java.until.Random;
    ^
    PrintingIntCalculator.java:4: error: illegal start of type
    import java.until.Random;
    ^
    PrintingIntCalculator.java:4: error: ';' expected
    import java.until.Random;
    ^
    PrintingIntCalculator.java:4: error: <identifier> expected
    import java.until.Random;
    ^
    The second portion in which I commented on (at the end of my code) states the following error message:

    PrintingIntCalculator.java:34: error: ';' expected
    total = ran.nextInt(b-a+1)+a)
    ^
    Both of these are suppose to tell the class that it needs to generate a random number. Could someone please help me correct these problems. It is greatly appreciated.
    Thank you so much in advance




    public class PrintingIntCalculator {

    //This part is wrong:
    import java.until.Random;

    public PrintingIntCalculator(){}


    private int total = 0;
    private int a = 0;
    private int b = 0;

    public int add(int a, int b){
    total = a + b;
    return (total);
    }
    public int subtract(int a, int b){
    total = a - b;
    return (total);
    }
    public int multiply(int a, int b){
    total = a * b;
    return (total);
    }
    public int divide(int a, int b){
    total = a / b;
    return (total);
    }
    public int remainder(int a, int b){
    total = a % b;
    return (total);
    }

    //This part is wrong:

    public int random(int a, int b){
    Random ran = new Random ();
    total = ran.nextInt(b-a+1)+a)
    return (total);
    }
    }


  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Creating a new class and dont know how to generate a random number math code

    Missing semicolon?
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  3. #3
    Super Moderator copeg's Avatar
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    Default Re: Creating a new class and dont know how to generate a random number math code

    2 Suggestions. First, suggest the following link for reading up on how to use import statement, especially the part that discusses where to place them
    Using Package Members (The Java™ Tutorials > Learning the Java Language > Packages)
    Second, make sure your lines/code statements end in semicolons - the compiler error point you to the exact line where this happens.

  4. #4
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Creating a new class and dont know how to generate a random number math code

    Extra parenthesis?
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  5. #5
    Super Moderator Norm's Avatar
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    Default Re: Creating a new class and dont know how to generate a random number math code

    What are on the first three lines of your source?
    The error message refers to an import statement on line 4.

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