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How to make an invalid option cause you to re-enter an option? Java

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  • 02-10-2012 8:17pm
    #1
    Brego
    Registered Users Posts: 24 ✭


    I'm coding a voting system for school, and wondering how to make an invalid vote not count as one of 5 votes? As in, if a invalid vote is cast, 5 are still left to be made, not 4.

    How can I do this with the else statement which prints out the invalid option code?


    string Variable;

    Variable = JOptionPane.showInputDialog(blah);

    if(boolean) {
    code
    }

    else if

    else if

    else { JOptionPane.showMessageDialog(null, "You have entered an invalid option. Your vote has not been counted.");

    JOptionPane.showMessageDialog(null, "Please re-enter your vote.");

    How do I make the last statement repeat the string variable without counting as a vote?


Comments

  • Options
    #2
    Mmmm_Lemony
    Registered Users Posts: 891 ✭✭✭Mmmm_Lemony


    Brego wrote: »
    I'm coding a voting system for school, and wondering how to make an invalid vote not count as one of 5 votes? As in, if a invalid vote is cast, 5 are still left to be made, not 4.

    How can I do this with the else statement which prints out the invalid option code?


    string Variable;

    Variable = JOptionPane.showInputDialog(blah);

    if(boolean) {
    code
    }

    else if

    else if

    else { JOptionPane.showMessageDialog(null, "You have entered an invalid option. Your vote has not been counted.");

    JOptionPane.showMessageDialog(null, "Please re-enter your vote.");

    How do I make the last statement repeat the string variable without counting as a vote?

    Not sure if this is exactly what you are looking for but, If you declare and instantiate a boolean value such as
    boolean validVote = true;

    then you can have a do while loop.

    Do, as in display the input dialog, and repeat, while validVote is false.


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