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Thread: JDialogs

  1. #1
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    Default JDialogs

    I am a complete newbie in making GUI in Java Swing and Java in general. I am use to using Qt, so any harsh comments and feedback will be taken lightly, so don't worry about my naive questions. It took me a while to make a Dialog with just using JPanel and JFrame, but my problem is when I execute the program two dialogs pop-up. One with the right display and one that is completely blank and small.

    If someone can tell me what I am doing wrong I would greatly appreciate it.

    Here is the code. OH ALSO comment on how to properly post code as well.

    Thanks

    package com.familydatabasetest.domain;
     
    import java.awt.Dimension;
    import java.awt.GridLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.*;
     
     
     
    public class MainForm extends JDialog{
     
        private final JTable nameTable;
        private JScrollPane nameScroll;
        private final JTable infoTable;
        private JScrollPane infoScroll;
     
        private JPanel mainPanel;
        private JPanel buttonPanel;
     
        private JButton addNameButton;
        private JButton deleteNameButton;
        private JButton editButton;
     
        public MainForm(){
     
            final JFrame frame = new JFrame("Family Database");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setSize(500, 500);
     
            nameTable = new JTable();
            nameTable.setPreferredScrollableViewportSize(new Dimension(100, 200));
            nameTable.setFillsViewportHeight(true);
            nameScroll = new JScrollPane(nameTable);
            infoTable = new JTable();
            infoTable.setPreferredScrollableViewportSize(new Dimension(100, 200));
            infoTable.setFillsViewportHeight(true);
            infoScroll = new JScrollPane(infoTable);
     
            addNameButton = new JButton("Add Name");
            addNameButton.setPreferredSize(new Dimension(50, 5));
            addNameButton.addActionListener(new ActionListener(){
                public void actionPerformed(ActionEvent e){
                    NameForm nameform = new NameForm();
                    nameform.show();
                }
            });
            deleteNameButton = new JButton("Delete Name");
            deleteNameButton.setPreferredSize(new Dimension(50, 5));
            editButton = new JButton("Edit");
            editButton.setPreferredSize(new Dimension(50, 5));
     
            mainPanel = new JPanel();
            mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));
            buttonPanel = new JPanel(new GridLayout(1, 3));
     
            buttonPanel.add(addNameButton);
            buttonPanel.add(deleteNameButton);
            buttonPanel.add(editButton);
     
            mainPanel.add(nameScroll);
            mainPanel.add(infoScroll);
            mainPanel.add(buttonPanel);
     
            frame.setContentPane(mainPanel);
            frame.setVisible(true);
     
        }
    }
     
    //Here is the main
    package familydatabasetest;
     
    import com.familydatabasetest.domain.MainForm;
     
     
    public class FamilyDatabaseTest {
     
     
        public static void main(String[] args) {
     
     
            MainForm mainform = new MainForm();
            mainform.show();
     
     
        }   
    }

    //Keep in mind I am use to using C++/QT
    //Thanks


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: JDialogs

    Here's one:
    public class MainForm extends JDialog{
    ...
    mainform.show();

    and here's another:
    final JFrame frame = new JFrame("Family Database");
    ...
    frame.setVisible(true);
    If you don't understand my answer, don't ignore it, ask a question.

  3. The Following User Says Thank You to Norm For This Useful Post:

    LaTJ (October 24th, 2013)

  4. #3
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    Default Re: JDialogs

    Sorry for the late delay I had trouble with my screen. Anyways, what's wrong with pubic class MainForm extends JDialog. I got that from a tutorial. Do I have to call its constructor??

    Please explain with more detail so.

  5. #4
    Super Moderator Norm's Avatar
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    Default Re: JDialogs

    I was answering this concern:
    my problem is when I execute the program two dialogs pop-up.
    by showing where the 2 windows come from.
    If you don't understand my answer, don't ignore it, ask a question.

  6. The Following User Says Thank You to Norm For This Useful Post:

    LaTJ (October 25th, 2013)