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Tripmaker
Tripmaker
Last Activity: Nov 24 '07, 03:58 PM
Joined: Jun 18 '07
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  • Tripmaker
    replied to Please help with selecting a String from a database
    in MySQL
    You're correct in assuming that my GUI is Java Based. Please forgive me, but please can you explain in laymans terms what you want me to do. I'm very new at programming.

    Thank you....
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    • Tripmaker
      replied to Please help with selecting a String from a database
      in MySQL
      When I type in a persons name in my GUI I want it to link to my database and give me the persons telephone number, the book they loaned and the date that they took the book.

      Petra...
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      • Tripmaker
        started a topic Please help with selecting a String from a database
        in MySQL

        Please help with selecting a String from a database

        What is wrong with my codeing. When I select the search button via my GUI, the GUI dissappears, it doesn't even go to the catch dialog. But when I copy and paste my search query to MySQL it works normally. Please explain.

        Here is my code:

        [CODE=java]If (source == searchB)
        {
        try
        {
        query = "SELECT Telephone,Book, Date from loan WHERE Name = ' " +
        nameT.getText() + " ' ";...
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        • Tripmaker
          started a topic Scroll bar attached to text area
          in Java

          Scroll bar attached to text area

          I'm trying to set u a scroll bar to be attached to the text area with a border around it. The problem is my text area appears as a small screen above the bordered/scrolled text area.

          Here is my code:

          Code:
          notesText = new JTextArea();
notesText.setLineWrap(true);
notesText.setWrapStyleWord(true);

JScrollPane scroll = new JScrollPane(notesText);
scroll.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
          ...
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          • Tripmaker
            replied to Help with ERROR
            in Java
            Thanks. I'll try that....
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            • Tripmaker
              replied to Tricky stuff
              in Java
              Let see if I can get this right. The value stays at 42 because of the while statement. In laymans terms while x == 42 the system prints out x != 42 and the program is ended. Everytime you re-run the program you keep getting the same answer. You will never get to the second while statement....
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              • Tripmaker
                replied to Tricky stuff
                in Java
                I'm new at programming so I'm going to take a calculated guess. The answer for a = 0.7999999999999 999 . The reason being double belongs to Floating-point numbers which represent numbers with fractional precision. Double doesn't round off a number.

                Petra...
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                • Tripmaker
                  started a topic Help with ERROR
                  in Java

                  Help with ERROR

                  Hi!

                  In my 'if' statement I'm wanting to say that if the following three textField are not an empty string then it must execute the statements that I've stipulated. The problem is I keep getting an error in my 'if' statement.

                  My code looks as follows:

                  if(loanField3 != "" && loanField4 != "" && loanField5 != "")

                  the error it gives me is 'incomparable...
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                  • Tripmaker
                    replied to Column name or number of supplied values does not match table definition in jsp
                    in Java
                    This is just a suggestion. I sometimes come up with the same error only to find that the order of the tables in the database do not match the order in my program. SQL is very sensitive with things like that. Also check that the number of question marks indicated in your program match the number of tables in your database.

                    Hope this helps.
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                    • Tripmaker
                      replied to Math.Random()
                      in Java
                      To answer your question about the goal. It's only a small project for our lecturer to see if we could design Customer, Employee and Resource GUIs for a Videostore. It was my idea to add the math.Random() method for customerID for a way of quick identification. It's still interesting to read other ideas of how to going about this. Who knows when I need to use it in the future.

                      Petra...
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                      • Tripmaker
                        replied to Math.Random()
                        in Java
                        Thanks. Never thought of that option.

                        Petra...
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                        • Tripmaker
                          replied to Math.Random()
                          in Java
                          Hi Jos

                          Sorry, my fault. Didn't read the answer correctly. Too many late nights I guess.

                          Thanks for all you help

                          Petra...
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                          • Tripmaker
                            replied to Math.Random()
                            in Java
                            I can not put an int on a text field.

                            this is part of my code:

                            int randNo = 0;
                            randNo = (int)((Math.ran dom()*700)+1);
                            custIdText.setT ext(randNo);

                            Petra...
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                            • Tripmaker
                              replied to Math.Random()
                              in Java
                              Thanks for your welcome and help. I've just completed a 10 month intense Java course at a private college and am working on a project that needs to be handed in in 2 weeks time. So I'm very new at all of this. I've tried surging the tutorials but haven't anything to help me.

                              Regards
                              Petra...
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                              • Tripmaker
                                started a topic Math.Random()
                                in Java

                                Math.Random()

                                Hi! I'm new at Java and enjoying what I've learned to date. I'm busy designing a GUI (for customers of a Video store). My question is: I want to use Math.random() to generate a unique customer no. The problem is I'm using a TextField and the error that keeps coming up is that I'm unable to use int in a String field. How can I get passed this?

                                Thank you
                                Petra
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