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Thread: Need help putting GUI in program!

  1. #1
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    Default Need help putting GUI in program!

    I have a program that works fine already, I just have to make a GUI for it and have no idea what I am doing lol. I need it to look like the picture I have attached. Can anyone please help! Much appreciated!

    import java.io.PrintStream;
    import javax.swing.JOptionPane;
     
     
    public class DivisibleByTwo
    {
        public static void main(String args[])
        {
            int first = Integer.parseInt(JOptionPane.showInputDialog("Enter starting integer."));
            int second = Integer.parseInt(JOptionPane.showInputDialog("Enter ending integer."));
            if(first > second)
            {
                int temp = first;
                first = second;
                second = temp;
            }
            System.out.println((new StringBuilder()).append("The integers divisible by 2 in the range ").append(first).append(" to ").append(second).append(" are:\n").toString());
            for(int l = first; l <= second; l++)
                if(l % 2 == 0)
                    System.out.printf("\t\t%5d\n", new Object[] {
                        Integer.valueOf(l)
                    });
     
            System.exit(0);
        }
    }
    Attached Images Attached Images


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    Administrator copeg's Avatar
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    Default Re: Need help putting GUI in program!


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    Default Re: Need help putting GUI in program!

    I have a basic understanding of creating a GUI but Im having a real hard time turning an already made program into one that has a GUI. Any help please?

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    Default Re: Need help putting GUI in program!

    I have a basic understanding of creating a GUI
    Then what have you tried? Did you try to create a JFrame with a layout similar to the picture you attached? That's one place where you can start...

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    Default Re: Need help putting GUI in program!

    I have to put "extends JFrame
    implements ActionListener" in right? But do I put it right after "public class DivisibleByTwo" or what? I'm just having trouble incorporating the gui stuff into the code I already have. Thanks

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    Default Re: Need help putting GUI in program!

    Quote Originally Posted by greyfox175 View Post
    I have to put "extends JFrame
    implements ActionListener" in right? But do I put it right after "public class DivisibleByTwo" or what? I'm just having trouble incorporating the gui stuff into the code I already have. Thanks
    This means you should go back and read the tutorial I linked above - it might seem overwhelming but if you search you will find the components you need, and tutorials showing you how to use them. My advice: start from scratch and break your problem down - strip out the logic from your original code and turn it into a method which can be accessed regardless of whether you use the command line, a gui, whatever (this is a very important concept to learn). Then write your GUI - as I said break the problem down - first work on the layout, then work on the Actions, then work on linking those actions to the logic

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