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Thread: Break/Continue example doesn't work with ConsoleReader

  1. #1
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    Default Break/Continue example doesn't work with ConsoleReader

    class BreakExample
    {
        public static void main(String[] args)
        {
            System.out.println("(Please enter a number from 1 to 6)");
            ConsoleReader console = new ConsoleReader(System.in);
            int num = console.readInt();
            System.out.println("(Please enter another number, from 1 to 8)");
            ConsoleReader console2 = new ConsoleReader(System.in);
            int num2 = console2.readInt();
     
            for(int num = 1; num  < 6; num++)
            {
     
                for(int num2 = 1; num2 < 8; num2++)
                {
                 if(num == 4 && num2 == 1)
                 {
                     System.out.println("keep the loop going when the numbers are: " +num+ " and " + num2);
                     continue;
                    }
     
                    if( num == 5 && num2 == 3 )
     
                 {
                    System.out.println( "Break the loop when the numbers are: " +num+ " and " + num2);
                    break;
                }   
                    System.out.println("Continue with the loop when the numbers are: " +num+ "and " + num2);
                }
            }
        }
    }

    The user input with this program doesn't work. I'm having a problem with the variables that I can't seem to figure out. Any ideas on how to get this to work?


  2. #2
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    Default Re: Break/Continue example doesn't work with ConsoleReader

    user input with this program doesn't work.
    Can you explain what "doesn't work" means? If there are errors, copy the full text and pasted it here.
    If the program doesn't do what you want, please explain what you want it to do differently.

    I see nested loops. The break and continue statements as coded work in the inner loop.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Break/Continue example doesn't work with ConsoleReader

    Sorry, the error is related to this line:

    for(int num = 1; num < 6; num++)

    the error is "variable num is already defined in method main(java.lang.string{})

  4. #4
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    Default Re: Break/Continue example doesn't work with ConsoleReader

    Please copy the EXACT text of the error message and paste it here. What you posted does not make sense. There is no class: java.lang.string. The String class's name starts with a S not s

    --- Update ---

    The compiler sees another, earlier definition for the variable: num. Change one of the definitions so they are different.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Break/Continue example doesn't work with ConsoleReader

    variable num is already defined in method main(java.lang.String[])

    That is the exact error, with for(int num = 1; num < 6; num++) being highlighted.

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    Default Re: Break/Continue example doesn't work with ConsoleReader

    See the update section of post #4
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Break/Continue example doesn't work with ConsoleReader

    class BreakExample2
    {
        public static void main(String[] args)
        {
            System.out.println("(Please enter a number from 1 to 6)");
            ConsoleReader console = new ConsoleReader(System.in);
            System.out.println("(Please enter another number, from 1 to 8)");
            ConsoleReader console2 = new ConsoleReader(System.in);
     
     
            for(int num = console.readInt(); num  < 6; num++)
            {
     
                for(int num2 = console2.readInt(); num2 < 8; num2++)
                {
                 if(num == 4 && num2 == 1)
                 {
                     System.out.println("keep the loop going when the numbers are: " +num+ " and " + num2);
                     continue;
                    }
     
                    if( num == 5 && num2 == 3 )
     
                 {
                    System.out.println( "Break the loop when the numbers are: " +num+ " and " + num2);
                    break;
                }   
                    System.out.println("Continue with the loop when the numbers are: " +num+ "and " + num2);
                }
            }
        }
    }

    I tried this, and the program compiles, but doesn't run as its supposed to. Still can't wrap my head around the variable errors.

  8. #8
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    Default Re: Break/Continue example doesn't work with ConsoleReader

    doesn't run as its supposed to
    Can you explain? What does it do now and what do you want it to do differently?

    Do you want the program to read a new value every time the loop goes around? Putting the call to the readInt() method in the for statement could cause that. Read the ending values one time into a variable and then use the variables in the for statement.

    can't wrap my head around the variable errors.
    What are the "variable errors"?
    If you don't understand my answer, don't ignore it, ask a question.

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