JFrame help

Ok.. bare with me, not sure how to word this.

I am writing a program that stores airplane data. My problem right now is trying to figure out how to get the navigation to work.

My program loads my "menu page". All I want to do is figure out how to load different content in the same container when I click a button.

For instance, right now I am working on just getting displaySeating() to work. I have a button on my "menu page" that I want to clear all the menu buttons and show a "new page" that has seating information.

I've tried to use removeAll() to remove all the components, but I haven't gotten it to work.

Here is my code so far... it isn't close to finished, but here it is so far.

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 import javax.swing.*;

import java.awt.*;

import java.awt.event.*;
 
public class Airplane extends JFrame {

    private static final int WIDTH = 400;

    private static final int HEIGHT = 300;
 
    private JLabel menu, selOption, seatingMenu;

    private JRadioButton newPlane, displaySeating, assignSeat, cancelSeat, removeSeats, exit;

    private JButton submit, back;

    private ButtonGroup menuOptions;

    private SubmitButtonHandler subHandler;

    private boolean npTF, dsTF, asTF, csTF, rsTF, eTF;

    private JTextArea seatingMenuTA;
 
    public Airplane(){
 
        Container c = getContentPane();

        c.setLayout(null);
 
        setTitle("");

        setSize(WIDTH, HEIGHT);

        setVisible(true);

        setDefaultCloseOperation(EXIT_ON_CLOSE);

    }
 
    public void mainMenu(){

        Container c = getContentPane();

        c.setLayout(null);
 
        //JLabels

        menu = new JLabel("Main menu");

        selOption = new JLabel("Select an option");
 
        //JRadioButtons

        newPlane = new JRadioButton("Get new Plane");

        displaySeating = new JRadioButton("Display seating");

        assignSeat = new JRadioButton("Assign a seat");

        cancelSeat = new JRadioButton("Cancel a seat");

        removeSeats = new JRadioButton("Remove all seating");

        exit = new JRadioButton("Exit program");
 
        //JButtons

        submit = new JButton("Submit");

        subHandler = new SubmitButtonHandler();

        submit.addActionListener(subHandler);
 
        //set size

        newPlane.setSize(150, 30);    

        displaySeating.setSize(150, 30);    

        assignSeat.setSize(150, 30);    

        cancelSeat.setSize(150, 30);    

        removeSeats.setSize(150, 30);    

        exit.setSize(150, 30);

        menu.setSize(150, 30);    

        selOption.setSize(150,30);

        submit.setSize(150, 30);
 
        //set location

        newPlane.setLocation(100, 30);    

        displaySeating.setLocation(100, 60);    

        assignSeat.setLocation(100, 90);    

        cancelSeat.setLocation(100, 120);    

        removeSeats.setLocation(100, 150);    

        exit.setLocation(100, 180);

        menu.setLocation(0, 0);    

        selOption.setLocation(0,30);

        submit.setLocation(100, 210);
 
        //add graphic objects

        c.add(newPlane);

        c.add(displaySeating);

        c.add(assignSeat);

        c.add(cancelSeat);

        c.add(removeSeats);

        c.add(exit);

        c.add(menu);

        c.add(selOption);

        c.add(submit);
 
        //button group

        menuOptions = new ButtonGroup();

        menuOptions.add(newPlane);

        menuOptions.add(displaySeating);

        menuOptions.add(assignSeat);

        menuOptions.add(cancelSeat);

        menuOptions.add(removeSeats);

        menuOptions.add(exit);
 
        setTitle("Main Menu");

        setSize(WIDTH, HEIGHT);

        setVisible(true);

        setDefaultCloseOperation(EXIT_ON_CLOSE);
 
    }
 
    public void displaySeatingMenu(){
 
        Container c = getContentPane();

        c.setLayout(null);
 
        seatingMenu = new JLabel("Seating Chart");

        seatingMenu.setSize(150, 30);

        seatingMenu.setLocation(150, 0);

        c.add(seatingMenu);
 
        back = new JButton("Back to Menu");

        back.setSize(150, 30);

        back.setLocation(120, 210);

        c.add(back);
 
        seatingMenuTA = new JTextArea(40, 10);

        seatingMenuTA.setSize(150,150);

        seatingMenuTA.setLocation(100, 30);

        //seatingMenuTA.append("\n\n\n\n\n\n\n\n\n\n");
 
        c.add(seatingMenuTA);
 
        setTitle("Seating Chart");

        setSize(WIDTH, HEIGHT);

        setVisible(true);

        setDefaultCloseOperation(EXIT_ON_CLOSE);
 
    }//end displaySeating
 
    private class SubmitButtonHandler implements ActionListener {

        public void actionPerformed(ActionEvent e){
 
            if(npTF == true){
 
            }

            if(asTF == true){
 
            }

            if(dsTF == true){
 
            }

            if(csTF == true){
 
            }

            if(rsTF == true){
 
            }

            if(eTF == true){
 
            }

            else{

            }

        }//end actionPerformed

    }//end SubmitButtonHandler
 
    public void itemStateChanged(ItemEvent e){

        if(e.getSource() == newPlane){

            npTF = true; dsTF = false; asTF = false; csTF = false; rsTF = false; eTF = false;

        }

        if(e.getSource() == displaySeating){

        npTF = false; dsTF = true; asTF = false; csTF = false; rsTF = false; eTF = false; 

        }

        if(e.getSource() == assignSeat){

            npTF = false; dsTF = false; asTF = true; csTF = false; rsTF = false; eTF = false;

        }

        if(e.getSource() == cancelSeat){

            npTF = false; dsTF = false; asTF = false; csTF = true; rsTF = false; eTF = false;

        }

        if(e.getSource() == removeSeats){

            npTF = false; dsTF = false; asTF = false; csTF = false; rsTF = true; eTF = false;

        }

        if(e.getSource() == exit){

            npTF = false; dsTF = false; asTF = false; csTF = false; rsTF = false; eTF = true;

        }

    }//end itemStateChanged
 
    public static void main(String[] args){

        char[][] seating = new char[7][8];
 
        Airplane plane = new Airplane(); 

        plane.mainMenu();
 
    }//end main

}//end Airplane

Dec 11 '06 #1

Subscribe Post Reply

3032

Caution

not sure if I was clear enough, really frustrated right now, let me know if I wasn't clear :\

Dec 11 '06 #2

r035198x

13,262

8TB

not sure if I was clear enough, really frustrated right now, let me know if I wasn't clear :\

I have to go now maybe someone else will help you out but I would advise you to use JPanels for laying out things

Dec 11 '06 #3

Caution

I haven't learned anything about JPanels yet :\

I just converted all of the JRadioButtons into JButtons. The button I used to test bringing up the second window works, but it isn't removing any of the previous content in the container.

I used getContentPane().removeAll(); then called the method to load the next screen. It doesn;t look like removeAll() did anything...

Dec 11 '06 #4

Caution

when I scroll over the container, the new buttons then overlap the old ones... I tried removeAll and removing them one by one, not working...

Dec 11 '06 #5

DeMan

1,806

1GB

There is loads of online information about JPanels, if you are really interested (just search for jPanel)

Basically, JPanel has a constructor that accepts a LayoutManager (of which you have several choices, but are generally easy to use). The LayoutManager defines how (or probably more accurately where) things are displayed on the screen. I think (And I'm sure someone will correct me if I'm wrong), that the most layout managers can work with %ages (like html can), so that size of objects can be relative and overlap isn't an issue. Check out the tute's you can find if you want exact detail.....

Dec 11 '06 #6

Caution

I'm not sure how/if that's going to help me right now. I just need to understand why removeAll() isn't working.

Here's where I am now, didn't change much, but the submit button at least calls displaySeatingMenu() correctly, the problem is components from mainMenu() don't get removed.

Expand|Select|Wrap|Line Numbers

 import javax.swing.*;

import java.awt.*;

import java.awt.event.*;
 
public class Airplane extends JFrame {

    private static final int WIDTH = 400;

    private static final int HEIGHT = 300;
 
    private JLabel menu, selOption, seatingMenu;

    private JButton submit, back, newPlane, displaySeating, assignSeat, cancelSeat, removeSeats, exit;

    private ButtonGroup menuOptions;

    private SubmitButtonHandler subHandler;

    private boolean npTF, dsTF, asTF, csTF, rsTF, eTF;

    private JTextArea seatingMenuTA;
 
    public Airplane(){
 
        Container c = getContentPane();

        c.setLayout(null);
 
        setTitle("");

        setSize(WIDTH, HEIGHT);

        setVisible(true);

        setDefaultCloseOperation(EXIT_ON_CLOSE);

    }
 
    public void mainMenu(){

        Container c = getContentPane();

        c.setLayout(null);
 
        //JLabels

        menu = new JLabel("Main menu");

        selOption = new JLabel("Select an option");
 
        //JButtons

        newPlane = new JButton("Get new Plane");

        displaySeating = new JButton("Display seating");

        assignSeat = new JButton("Assign a seat");

        cancelSeat = new JButton("Cancel a seat");

        removeSeats = new JButton("Remove all seating");

        exit = new JButton("Exit program");

        submit = new JButton("Submit");

        subHandler = new SubmitButtonHandler();

        submit.addActionListener(subHandler);
 
        //set size

        newPlane.setSize(150, 30);    

        displaySeating.setSize(150, 30);    

        assignSeat.setSize(150, 30);    

        cancelSeat.setSize(150, 30);    

        removeSeats.setSize(150, 30);    

        exit.setSize(150, 30);

        menu.setSize(150, 30);    

        selOption.setSize(150,30);

        submit.setSize(150, 30);
 
        //set location

        newPlane.setLocation(100, 30);    

        displaySeating.setLocation(100, 60);    

        assignSeat.setLocation(100, 90);    

        cancelSeat.setLocation(100, 120);    

        removeSeats.setLocation(100, 150);    

        exit.setLocation(100, 180);

        menu.setLocation(0, 0);    

        selOption.setLocation(0,30);

        submit.setLocation(100, 210);
 
        //add graphic objects

        c.add(newPlane);

        c.add(displaySeating);

        c.add(assignSeat);

        c.add(cancelSeat);

        c.add(removeSeats);

        c.add(exit);

        c.add(menu);

        c.add(selOption);

        c.add(submit);
 
        setTitle("Main Menu");

        setSize(WIDTH, HEIGHT);

        setVisible(true);

        setDefaultCloseOperation(EXIT_ON_CLOSE);
 
    }
 
    public void displaySeatingMenu(){
 
        Container c = getContentPane();

        c.setLayout(null);
 
        seatingMenu = new JLabel("Seating Chart");

        seatingMenu.setSize(150, 30);

        seatingMenu.setLocation(150, 0);

        c.add(seatingMenu);
 
        back = new JButton("Back to Menu");

        back.setSize(150, 30);

        back.setLocation(120, 210);

        c.add(back);
 
        seatingMenuTA = new JTextArea(40, 10);

        seatingMenuTA.setSize(150,150);

        seatingMenuTA.setLocation(100, 30);

        //seatingMenuTA.append("\n\n\n\n\n\n\n\n\n\n");
 
        c.add(seatingMenuTA);
 
        setTitle("Seating Chart");

        setSize(WIDTH, HEIGHT);

        setVisible(true);

        setDefaultCloseOperation(EXIT_ON_CLOSE);
 
    }//end displaySeating
 
    private class SubmitButtonHandler implements ActionListener {

        public void actionPerformed(ActionEvent e){

            getContentPane().removeAll();

            displaySeatingMenu();

        }//end actionPerformed

    }//end SubmitButtonHandler
 
    public static void main(String[] args){

        char[][] seating = new char[7][8];
 
        Airplane plane = new Airplane(); 

        plane.mainMenu();
 
    }//end main

}//end Airplane

Dec 11 '06 #7

r035198x

13,262

8TB

I'm not sure how/if that's going to help me right now. I just need to understand why removeAll() isn't working.

Here's where I am now, didn't change much, but the submit button at least calls displaySeatingMenu() correctly, the problem is components from mainMenu() don't get removed.

Expand|Select|Wrap|Line Numbers

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class Airplane extends JFrame {

    private static final int WIDTH = 400;

    private static final int HEIGHT = 300;

    private JLabel menu, selOption, seatingMenu;

    private JButton submit, back, newPlane, displaySeating, assignSeat, cancelSeat, removeSeats, exit;

    private ButtonGroup menuOptions;

    private SubmitButtonHandler subHandler;

    private boolean npTF, dsTF, asTF, csTF, rsTF, eTF;

    private JTextArea seatingMenuTA;

    public Airplane(){

        Container c = getContentPane();

        c.setLayout(null);

        setTitle("");

        setSize(WIDTH, HEIGHT);

        setVisible(true);

        setDefaultCloseOperation(EXIT_ON_CLOSE);

    }

    public void mainMenu(){

        Container c = getContentPane();

        c.setLayout(null);

        //JLabels

        menu = new JLabel("Main menu");

        selOption = new JLabel("Select an option");

        //JButtons

        newPlane = new JButton("Get new Plane");

        displaySeating = new JButton("Display seating");

        assignSeat = new JButton("Assign a seat");

        cancelSeat = new JButton("Cancel a seat");

        removeSeats = new JButton("Remove all seating");

        exit = new JButton("Exit program");

        submit = new JButton("Submit");

        subHandler = new SubmitButtonHandler();

        submit.addActionListener(subHandler);

        //set size

        newPlane.setSize(150, 30);

        displaySeating.setSize(150, 30);

        assignSeat.setSize(150, 30);

        cancelSeat.setSize(150, 30);

        removeSeats.setSize(150, 30);

        exit.setSize(150, 30);

        menu.setSize(150, 30);

        selOption.setSize(150,30);

        submit.setSize(150, 30);

        //set location

        newPlane.setLocation(100, 30);

        displaySeating.setLocation(100, 60);

        assignSeat.setLocation(100, 90);

        cancelSeat.setLocation(100, 120);

        removeSeats.setLocation(100, 150);

        exit.setLocation(100, 180);

        menu.setLocation(0, 0);

        selOption.setLocation(0,30);

        submit.setLocation(100, 210);

        //add graphic objects

        c.add(newPlane);

        c.add(displaySeating);

        c.add(assignSeat);

        c.add(cancelSeat);

        c.add(removeSeats);

        c.add(exit);

        c.add(menu);

        c.add(selOption);

        c.add(submit);

        setTitle("Main Menu");

        setSize(WIDTH, HEIGHT);

        setVisible(true);

        setDefaultCloseOperation(EXIT_ON_CLOSE);

    }

    public void displaySeatingMenu(){

        Container c = getContentPane();

        c.setLayout(null);

        seatingMenu = new JLabel("Seating Chart");

        seatingMenu.setSize(150, 30);

        seatingMenu.setLocation(150, 0);

        c.add(seatingMenu);

        back = new JButton("Back to Menu");

        back.setSize(150, 30);

        back.setLocation(120, 210);

        c.add(back);

        seatingMenuTA = new JTextArea(40, 10);

        seatingMenuTA.setSize(150,150);

        seatingMenuTA.setLocation(100, 30);

        //seatingMenuTA.append("\n\n\n\n\n\n\n\n\n\n");

        c.add(seatingMenuTA);

        setTitle("Seating Chart");

        setSize(WIDTH, HEIGHT);

        setVisible(true);

        setDefaultCloseOperation(EXIT_ON_CLOSE);

    }//end displaySeating

    private class SubmitButtonHandler implements ActionListener {

        public void actionPerformed(ActionEvent e){

            getContentPane().removeAll();

            displaySeatingMenu();

        }//end actionPerformed

    }//end SubmitButtonHandler

    public static void main(String[] args){

        char[][] seating = new char[7][8];

        Airplane plane = new Airplane();

        plane.mainMenu();

    }//end main

}//end Airplane

Since you seem new to swing, all I can say is that if you use JPanels you'll be able to see the remove working properly. I also do not think it's correct to learn how to use JButtons and JRadioButtons before you learn to use JPanel.

Dec 12 '06 #8

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