display new image?

G

Geoff Cox

Hello

The code below allows me to display an image and a question and when I
click on the "Next" button I can save the slider value (the answer to
the question) to a file.

I cannot at the moment see how I can display a new image and question
after the "Next" button has been clicked ...

Help!

Cheers

Geoff


import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.io.*;


class Changes3 extends JFrame implements ChangeListener,
ActionListener
{
JSlider scale = new JSlider(-20,+20,0);
JLabel position = new JLabel("Set Position");
JButton nb = new JButton("Next");

public Changes3()
{

super("Slider");
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);

Container contentArea = getContentPane();
GridLayout lay = new GridLayout(3,1);
contentArea.setLayout(lay);

scale.setMajorTickSpacing(10);
scale.setMinorTickSpacing(5);
scale.setPaintTicks(true);
scale.setPaintLabels(true);

scale.addChangeListener(this);

JLabel text = new JLabel("Look at the picture and indicate
on the slider how you feel.");

ImageIcon picicon = new ImageIcon("pic1.jpg");
JButton buttonpic = new JButton(picicon);

nb.addActionListener(this);

JPanel panel1 = new JPanel();
panel1.setBackground(Color.blue);
panel1.add(buttonpic);

JPanel panel2 = new JPanel();
panel2.setBackground(Color.white);
panel2.add(text);

JPanel panel3 = new JPanel();
panel3.setBackground(Color.white);
JLabel slidertext = new JLabel("-20 = Very Bad, +20 = Very
Good");
panel3.add(slidertext);
panel3.add(scale);
panel3.add(nb);

contentArea.add(panel1);
contentArea.add(panel2);
contentArea.add(panel3);

setContentPane(contentArea);
}

public void stateChanged(ChangeEvent event)
{
JSlider src = (JSlider) event.getSource();
if(!src.getValueIsAdjusting())
position.setText("Position is "+scale.getValue());
}

public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
if (source == nb ) {
tofile();
}

}

public void tofile() {
try
{
FileWriter outfile = new FileWriter ("data.txt");
PrintWriter pw = new PrintWriter(outfile);
pw.println(scale.getValue());
pw.close();
}
catch (IOException e) { System.out.println(e); }



}



public static void main(String[] args)
{
Changes3 eg = new Changes3();
}
}
 
J

Joan

Hello

The code below allows me to display an image and a question and
when I
click on the "Next" button I can save the slider value (the
answer to
the question) to a file.

I cannot at the moment see how I can display a new image and
question
after the "Next" button has been clicked ...

Help!

Cheers

Geoff
<snip -- too much stuff to read>
Did you try delete the icon and question then re-display it.
 
J

Joan

Geoff Cox said:
On Mon, 25 Jul 2005 11:49:53 -0500, "Joan"
<[email protected]>
wrote:

Joan,


I have been taken to task before for not providing code which
can be
run!
Click to expand...

No prob, it is just me that doesn't like to read a bunch of
stuff.
No - will give that a go.
Click to expand...

I do this in one of my programs.

// remove the old table
ExcelUtil.frame.getContentPane().remove(myTable);

// create new table
myTable = new JTable(tempArray, colName);
myTable.setToolTipText("Split File Names");
myTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
myTable.setRowSelectionAllowed(true);
myTable.setEnabled(true);
myTable.setVisible(true);

ExcelUtil.frame.getContentPane().add(myTable,
BorderLayout.SOUTH);
ExcelUtil.frame.pack();
ExcelUtil.frame.setVisible(true);
 
G

Geoff Cox

I do this in one of my programs.
Click to expand...

Joan,

Not sure how to remove the icon but thought it might be

panel1.remove(buttonpic) which I have after the slider value has been
saved to a file. This will not compile, problem with "variable panel1
etc" - if you could kindly (really kindly!) scan the code below I
guess you will see why?

Thanks

Geoff

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.io.*;


class Changes3 extends JFrame implements ChangeListener,
ActionListener
{
JSlider scale = new JSlider(-20,+20,0);
JLabel position = new JLabel("Set Position");
JButton nb = new JButton("Next");
ImageIcon picicon = new ImageIcon("pic1.jpg");
JButton buttonpic = new JButton(picicon);


public Changes3()
{

super("Slider");
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);

Container contentArea = getContentPane();
GridLayout lay = new GridLayout(3,1);
contentArea.setLayout(lay);

scale.setMajorTickSpacing(10);
scale.setMinorTickSpacing(5);
scale.setPaintTicks(true);
scale.setPaintLabels(true);

scale.addChangeListener(this);

JLabel text = new JLabel("Look at the picture and indicate
on the slider how you feel.");


nb.addActionListener(this);

JPanel panel1 = new JPanel();
panel1.setBackground(Color.blue);
panel1.add(buttonpic);

JPanel panel2 = new JPanel();
panel2.setBackground(Color.white);
panel2.add(text);

JPanel panel3 = new JPanel();
panel3.setBackground(Color.white);
JLabel slidertext = new JLabel("-20 = Very Bad, +20 = Very
Good");
panel3.add(slidertext);
panel3.add(scale);
panel3.add(nb);

contentArea.add(panel1);
contentArea.add(panel2);
contentArea.add(panel3);

setContentPane(contentArea);
}

public void stateChanged(ChangeEvent event)
{
JSlider src = (JSlider) event.getSource();
if(!src.getValueIsAdjusting())
position.setText("Position is "+scale.getValue());
}

public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
if (source == nb ) {
tofile();
}

}

public void tofile() {
try
{
FileWriter outfile = new FileWriter ("data.txt");
PrintWriter pw = new PrintWriter(outfile);
pw.println(scale.getValue());
pw.close();
}
catch (IOException e) { System.out.println(e); }

// System.exit(0);

panel1.remove(buttonpic);
ImageIcon picicon = new ImageIcon("pic2.jpg");
JButton buttonpic = new JButton(picicon);


}



public static void main(String[] args)
{
Changes3 eg = new Changes3();
}
}
 
J

Joan

Geoff Cox said:
Joan,

Not sure how to remove the icon but thought it might be

panel1.remove(buttonpic) which I have after the slider value
has been
saved to a file. This will not compile, problem with "variable
panel1
etc" - if you could kindly (really kindly!) scan the code below
I
guess you will see why?

Thanks

Geoff
Click to expand...

I copied your sample code and got it to work.
there are a few things that are different from what you were
doing
from what I was doing. I took poetic licence to change variable
names
and to move some local variables to fields etc. The reason it did
not
compile for you was a scope thing. I don't use GridLayout often
enough
to know if I can replace something at a particular location, so I
changed
it to BorderLayout. ;-) The basic idea is to replace the NORTH
piece
of the puzzle when you click the button. I replace the panel with
a new
panel, but I also have to put the new panel into the contentArea
to
complete the replacement. Here is the new program. Hope it makes
sense.

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

class Changes3 extends JFrame implements ChangeListener,
ActionListener {

private JSlider scale = new JSlider(-20, +20, 0);
private JLabel position = new JLabel("Set Position");
private JButton nxtButton = new JButton("Next");
private ImageIcon picIcon1 = new ImageIcon("pic1.jpg");
private ImageIcon picIcon2 = new ImageIcon("pic2.jpg");
private JButton buttonPic1 = new JButton(picIcon1);
private JButton buttonPic2 = new JButton(picIcon2);
private JPanel myPanel;
private static Changes3 egg;
private Container contentArea;
private BorderLayout myLayout;
private JLabel labText;

public Changes3() {

super("Slider");
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);

contentArea = getContentPane();
myLayout = new BorderLayout();
contentArea.setLayout(myLayout);

scale.setMajorTickSpacing(10);
scale.setMinorTickSpacing(5);
scale.setPaintTicks(true);
scale.setPaintLabels(true);

scale.addChangeListener(this);

labText = new JLabel(
"Look at the picture and indicate on the slider
how you feel.");
nxtButton.addActionListener(this);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
myPanel.add(buttonPic1);

JPanel panel2 = new JPanel();
panel2.setBackground(Color.white);
panel2.add(labText);

JPanel panel3 = new JPanel();
panel3.setBackground(Color.white);
JLabel slidertext = new JLabel("-20 = Very Bad, +20 =
Very Good");
panel3.add(slidertext);
panel3.add(scale);
panel3.add(nxtButton);

contentArea.add(myPanel, BorderLayout.NORTH);
contentArea.add(panel2, BorderLayout.CENTER);
contentArea.add(panel3, BorderLayout.SOUTH);

setContentPane(contentArea);
}

public void stateChanged(ChangeEvent event) {
JSlider src = (JSlider) event.getSource();
if (!src.getValueIsAdjusting())
position.setText("Position is " + scale.getValue());
}

public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
if (source == nxtButton) {
tofile();
}

contentArea.remove(myPanel);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
myPanel.add(buttonPic2);

contentArea.add(myPanel, BorderLayout.NORTH);

setContentPane(contentArea);

contentArea.setVisible(true);
}

public void tofile() {
try {
FileWriter outfile = new FileWriter("data.txt");
PrintWriter pw = new PrintWriter(outfile);
pw.println(scale.getValue());
pw.close();
} catch (IOException e) {
System.out.println(e);
}
// System.exit(0);
}

public static void main(String[] args) {
egg = new Changes3();
}
}
 
G

Geoff Cox

Joan,

Many thanks for your efforts! It works fine - will now try to
understand how you have solved the problem!

Thanks again

Geoff
Not sure how to remove the icon but thought it might be

panel1.remove(buttonpic) which I have after the slider value
has been
saved to a file. This will not compile, problem with "variable
panel1
etc" - if you could kindly (really kindly!) scan the code below
I
guess you will see why?

Thanks

Geoff
Click to expand...

I copied your sample code and got it to work.
there are a few things that are different from what you were
doing
from what I was doing. I took poetic licence to change variable
names
and to move some local variables to fields etc. The reason it did
not
compile for you was a scope thing. I don't use GridLayout often
enough
to know if I can replace something at a particular location, so I
changed
it to BorderLayout. ;-) The basic idea is to replace the NORTH
piece
of the puzzle when you click the button. I replace the panel with
a new
panel, but I also have to put the new panel into the contentArea
to
complete the replacement. Here is the new program. Hope it makes
sense.

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

class Changes3 extends JFrame implements ChangeListener,
ActionListener {

private JSlider scale = new JSlider(-20, +20, 0);
private JLabel position = new JLabel("Set Position");
private JButton nxtButton = new JButton("Next");
private ImageIcon picIcon1 = new ImageIcon("pic1.jpg");
private ImageIcon picIcon2 = new ImageIcon("pic2.jpg");
private JButton buttonPic1 = new JButton(picIcon1);
private JButton buttonPic2 = new JButton(picIcon2);
private JPanel myPanel;
private static Changes3 egg;
private Container contentArea;
private BorderLayout myLayout;
private JLabel labText;

public Changes3() {

super("Slider");
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);

contentArea = getContentPane();
myLayout = new BorderLayout();
contentArea.setLayout(myLayout);

scale.setMajorTickSpacing(10);
scale.setMinorTickSpacing(5);
scale.setPaintTicks(true);
scale.setPaintLabels(true);

scale.addChangeListener(this);

labText = new JLabel(
"Look at the picture and indicate on the slider
how you feel.");
nxtButton.addActionListener(this);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
myPanel.add(buttonPic1);

JPanel panel2 = new JPanel();
panel2.setBackground(Color.white);
panel2.add(labText);

JPanel panel3 = new JPanel();
panel3.setBackground(Color.white);
JLabel slidertext = new JLabel("-20 = Very Bad, +20 =
Very Good");
panel3.add(slidertext);
panel3.add(scale);
panel3.add(nxtButton);

contentArea.add(myPanel, BorderLayout.NORTH);
contentArea.add(panel2, BorderLayout.CENTER);
contentArea.add(panel3, BorderLayout.SOUTH);

setContentPane(contentArea);
}

public void stateChanged(ChangeEvent event) {
JSlider src = (JSlider) event.getSource();
if (!src.getValueIsAdjusting())
position.setText("Position is " + scale.getValue());
}

public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
if (source == nxtButton) {
tofile();
}

contentArea.remove(myPanel);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
myPanel.add(buttonPic2);

contentArea.add(myPanel, BorderLayout.NORTH);

setContentPane(contentArea);

contentArea.setVisible(true);
}

public void tofile() {
try {
FileWriter outfile = new FileWriter("data.txt");
PrintWriter pw = new PrintWriter(outfile);
pw.println(scale.getValue());
pw.close();
} catch (IOException e) {
System.out.println(e);
}
// System.exit(0);
}

public static void main(String[] args) {
egg = new Changes3();
}
}
Click to expand...
 
G

Geoff Cox

Joan,

I have read through your code and just wish to thank you again. You
have cleared up several questions for me.

Many thanks!

Cheers

Geoff

Joan,

Not sure how to remove the icon but thought it might be

panel1.remove(buttonpic) which I have after the slider value
has been
saved to a file. This will not compile, problem with "variable
panel1
etc" - if you could kindly (really kindly!) scan the code below
I
guess you will see why?

Thanks

Geoff
Click to expand...

I copied your sample code and got it to work.
there are a few things that are different from what you were
doing
from what I was doing. I took poetic licence to change variable
names
and to move some local variables to fields etc. The reason it did
not
compile for you was a scope thing. I don't use GridLayout often
enough
to know if I can replace something at a particular location, so I
changed
it to BorderLayout. ;-) The basic idea is to replace the NORTH
piece
of the puzzle when you click the button. I replace the panel with
a new
panel, but I also have to put the new panel into the contentArea
to
complete the replacement. Here is the new program. Hope it makes
sense.

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

class Changes3 extends JFrame implements ChangeListener,
ActionListener {

private JSlider scale = new JSlider(-20, +20, 0);
private JLabel position = new JLabel("Set Position");
private JButton nxtButton = new JButton("Next");
private ImageIcon picIcon1 = new ImageIcon("pic1.jpg");
private ImageIcon picIcon2 = new ImageIcon("pic2.jpg");
private JButton buttonPic1 = new JButton(picIcon1);
private JButton buttonPic2 = new JButton(picIcon2);
private JPanel myPanel;
private static Changes3 egg;
private Container contentArea;
private BorderLayout myLayout;
private JLabel labText;

public Changes3() {

super("Slider");
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);

contentArea = getContentPane();
myLayout = new BorderLayout();
contentArea.setLayout(myLayout);

scale.setMajorTickSpacing(10);
scale.setMinorTickSpacing(5);
scale.setPaintTicks(true);
scale.setPaintLabels(true);

scale.addChangeListener(this);

labText = new JLabel(
"Look at the picture and indicate on the slider
how you feel.");
nxtButton.addActionListener(this);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
myPanel.add(buttonPic1);

JPanel panel2 = new JPanel();
panel2.setBackground(Color.white);
panel2.add(labText);

JPanel panel3 = new JPanel();
panel3.setBackground(Color.white);
JLabel slidertext = new JLabel("-20 = Very Bad, +20 =
Very Good");
panel3.add(slidertext);
panel3.add(scale);
panel3.add(nxtButton);

contentArea.add(myPanel, BorderLayout.NORTH);
contentArea.add(panel2, BorderLayout.CENTER);
contentArea.add(panel3, BorderLayout.SOUTH);

setContentPane(contentArea);
}

public void stateChanged(ChangeEvent event) {
JSlider src = (JSlider) event.getSource();
if (!src.getValueIsAdjusting())
position.setText("Position is " + scale.getValue());
}

public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
if (source == nxtButton) {
tofile();
}

contentArea.remove(myPanel);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
myPanel.add(buttonPic2);

contentArea.add(myPanel, BorderLayout.NORTH);

setContentPane(contentArea);

contentArea.setVisible(true);
}

public void tofile() {
try {
FileWriter outfile = new FileWriter("data.txt");
PrintWriter pw = new PrintWriter(outfile);
pw.println(scale.getValue());
pw.close();
} catch (IOException e) {
System.out.println(e);
}
// System.exit(0);
}

public static void main(String[] args) {
egg = new Changes3();
}
}
Click to expand...
 
J

Joan

Geoff Cox said:
On Mon, 25 Jul 2005 15:38:36 -0500, "Joan"
<[email protected]>
wrote:

Joan,

I have read through your code and just wish to thank you again.
You
have cleared up several questions for me.

Many thanks!
Click to expand...

Glad to help, I had a similar problem not too long ago so I had
some code to refer to.

Cheers

Geoff

I do this in one of my programs.

Joan,

Not sure how to remove the icon but thought it might be

panel1.remove(buttonpic) which I have after the slider value
has been
saved to a file. This will not compile, problem with
"variable
panel1
etc" - if you could kindly (really kindly!) scan the code
below
I
guess you will see why?

Thanks

Geoff
Click to expand...

I copied your sample code and got it to work.
there are a few things that are different from what you were
doing
from what I was doing. I took poetic licence to change variable
names
and to move some local variables to fields etc. The reason it
did
not
compile for you was a scope thing. I don't use GridLayout often
enough
to know if I can replace something at a particular location, so
I
changed
it to BorderLayout. ;-) The basic idea is to replace the NORTH
piece
of the puzzle when you click the button. I replace the panel
with
a new
panel, but I also have to put the new panel into the
contentArea
to
complete the replacement. Here is the new program. Hope it
makes
sense.

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

class Changes3 extends JFrame implements ChangeListener,
ActionListener {

private JSlider scale = new JSlider(-20, +20, 0);
private JLabel position = new JLabel("Set Position");
private JButton nxtButton = new JButton("Next");
private ImageIcon picIcon1 = new ImageIcon("pic1.jpg");
private ImageIcon picIcon2 = new ImageIcon("pic2.jpg");
private JButton buttonPic1 = new JButton(picIcon1);
private JButton buttonPic2 = new JButton(picIcon2);
private JPanel myPanel;
private static Changes3 egg;
private Container contentArea;
private BorderLayout myLayout;
private JLabel labText;

public Changes3() {

super("Slider");
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);

contentArea = getContentPane();
myLayout = new BorderLayout();
contentArea.setLayout(myLayout);

scale.setMajorTickSpacing(10);
scale.setMinorTickSpacing(5);
scale.setPaintTicks(true);
scale.setPaintLabels(true);

scale.addChangeListener(this);

labText = new JLabel(
"Look at the picture and indicate on the slider
how you feel.");
nxtButton.addActionListener(this);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
myPanel.add(buttonPic1);

JPanel panel2 = new JPanel();
panel2.setBackground(Color.white);
panel2.add(labText);

JPanel panel3 = new JPanel();
panel3.setBackground(Color.white);
JLabel slidertext = new JLabel("-20 = Very Bad, +20 =
Very Good");
panel3.add(slidertext);
panel3.add(scale);
panel3.add(nxtButton);

contentArea.add(myPanel, BorderLayout.NORTH);
contentArea.add(panel2, BorderLayout.CENTER);
contentArea.add(panel3, BorderLayout.SOUTH);

setContentPane(contentArea);
}

public void stateChanged(ChangeEvent event) {
JSlider src = (JSlider) event.getSource();
if (!src.getValueIsAdjusting())
position.setText("Position is " +
scale.getValue());
}

public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
if (source == nxtButton) {
tofile();
}

contentArea.remove(myPanel);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
myPanel.add(buttonPic2);

contentArea.add(myPanel, BorderLayout.NORTH);

setContentPane(contentArea);

contentArea.setVisible(true);
}

public void tofile() {
try {
FileWriter outfile = new FileWriter("data.txt");
PrintWriter pw = new PrintWriter(outfile);
pw.println(scale.getValue());
pw.close();
} catch (IOException e) {
System.out.println(e);
}
// System.exit(0);
}

public static void main(String[] args) {
egg = new Changes3();
}
}
Click to expand...
Click to expand...
 
G

Geoff Cox

Joan,

If you are still around?!

I have declared a

private int count;

and added

count = ++count;
pw.print(count+": ");

to tofile() in order to put a question number in front of the slider
value and this seems to work OK. I also added "true" to the FileWriter
so as to not overwrite the data file.

I would now like to be able to display a series of images rather than
just the 2 so far ... I thought of using the incremented count value
for buttonpic3, buttonpic4 etc by writing (buttonpic + count) but this
does not work. Any thoughts? Some sort of loop needed?

Cheers

Geoff

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

class Changes4 extends JFrame implements ChangeListener,
ActionListener {

private JSlider scale = new JSlider(-20, +20, 0);
private JLabel position = new JLabel("Set Position");
private JButton nxtButton = new JButton("Next");
private ImageIcon picIcon1 = new ImageIcon("pic1.jpg");
private ImageIcon picIcon2 = new ImageIcon("pic2.jpg");
private ImageIcon picIcon3 = new ImageIcon("pic3.jpg");

private JButton buttonPic1 = new JButton(picIcon1);
private JButton buttonPic2 = new JButton(picIcon2);
private JButton buttonPic3 = new JButton(picIcon3);

private JPanel myPanel;
private static Changes4 egg;
private Container contentArea;
private BorderLayout myLayout;
private JLabel labText;
private int count = 0;

public Changes4() {

super("Slider");
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);

contentArea = getContentPane();
myLayout = new BorderLayout();
contentArea.setLayout(myLayout);

scale.setMajorTickSpacing(10);
scale.setMinorTickSpacing(5);
scale.setPaintTicks(true);
scale.setPaintLabels(true);

scale.addChangeListener(this);

labText = new JLabel(
"Look at the picture and indicate on the slider how
you feel.");
nxtButton.addActionListener(this);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
myPanel.add(buttonPic1);

JPanel panel2 = new JPanel();
panel2.setBackground(Color.white);
panel2.add(labText);

JPanel panel3 = new JPanel();
panel3.setBackground(Color.white);
JLabel slidertext = new JLabel("-20 = Very Bad, +20 = Very
Good");
panel3.add(slidertext);
panel3.add(scale);
panel3.add(nxtButton);

contentArea.add(myPanel, BorderLayout.NORTH);
contentArea.add(panel2, BorderLayout.CENTER);
contentArea.add(panel3, BorderLayout.SOUTH);

setContentPane(contentArea);
}

public void stateChanged(ChangeEvent event) {
JSlider src = (JSlider) event.getSource();
if (!src.getValueIsAdjusting())
position.setText("Position is " + scale.getValue());
}

public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
if (source == nxtButton) {
tofile();
}

contentArea.remove(myPanel);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
myPanel.add(buttonPic2);

contentArea.add(myPanel, BorderLayout.NORTH);

setContentPane(contentArea);

contentArea.setVisible(true);
}

public void tofile() {
try {
FileWriter outfile = new FileWriter("data.txt",true);
PrintWriter pw = new PrintWriter(outfile);

count = ++count;

pw.print(count+": ");
pw.println(scale.getValue());
pw.close();
} catch (IOException e) {
System.out.println(e);
}
// System.exit(0);
}

public static void main(String[] args) {
egg = new Changes4();
}
}



public void tofile() {
try {
FileWriter outfile = new FileWriter("data.txt", true);
PrintWriter pw = new PrintWriter(outfile);

count = ++count;
pw.print(count+": ");

pw.println(scale.getValue());
pw.close();
} catch (IOException e) {
System.out.println(e);
}
 
J

Joan

Geoff Cox said:
On Mon, 25 Jul 2005 16:25:49 -0500, "Joan"
<[email protected]>
wrote:

Joan,

If you are still around?!

I have declared a

private int count;

and added

count = ++count;
pw.print(count+": ");

to tofile() in order to put a question number in front of the
slider
value and this seems to work OK. I also added "true" to the
FileWriter
so as to not overwrite the data file.

I would now like to be able to display a series of images
rather than
just the 2 so far
Click to expand...

I thought you might. ;-)

... I thought of using the incremented count value
for buttonpic3, buttonpic4 etc by writing (buttonpic + count)
but this
does not work.
Click to expand...

This is a trick they use quite effectively in Java Script, but
not for java.
Any thoughts? Some sort of loop needed?
Click to expand...

Since this is driven by user input which is slow you can generate
the Icons on the fly (unless you expect this to be run by
hundreds
of people simultaneously.)

You could put a "static int" field into the class that starts at
0
and is incremented up to N in "actionPerformed" to keep track of
which image you are using.
You'll need a String[] array to keep the names of the jpg files.
Use the length of the array as N.

Of course, now the values that you write into file "data.txt"
write on top
of each other. Maybe you want to have an array of filenames for
that too.
--------------- this works ----------
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

class Changes3 extends JFrame implements ChangeListener,
ActionListener {

private JSlider scale = new JSlider(-20, +20, 0);
private JLabel position = new JLabel("Set Position");
private JButton nxtButton = new JButton("Next");
private ImageIcon picIcon;
private JButton picButton;
private JPanel myPanel;
private static Changes3 egg;
private Container contentArea;
private BorderLayout myLayout;
private JLabel labText;
private static int jpgIndex = 0;
private static final String[] jpgNames = { "pic1.jpg",
"pic2.jpg", };

public Changes3() {

super("Slider");
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);

contentArea = getContentPane();
myLayout = new BorderLayout();
contentArea.setLayout(myLayout);

scale.setMajorTickSpacing(10);
scale.setMinorTickSpacing(5);
scale.setPaintTicks(true);
scale.setPaintLabels(true);

scale.addChangeListener(this);

labText = new JLabel(
"Look at the picture and indicate on the slider how you
feel.");
nxtButton.addActionListener(this);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
picIcon = new ImageIcon(jpgNames[jpgIndex]);
picButton = new JButton(picIcon);
myPanel.add(picButton);
if (++jpgIndex == jpgNames.length)
jpgIndex = 0;

JPanel panel2 = new JPanel();
panel2.setBackground(Color.white);
panel2.add(labText);

JPanel panel3 = new JPanel();
panel3.setBackground(Color.white);
JLabel slidertext = new JLabel("-20 = Very Bad, +20 = Very
Good");
panel3.add(slidertext);
panel3.add(scale);
panel3.add(nxtButton);

contentArea.add(myPanel, BorderLayout.NORTH);
contentArea.add(panel2, BorderLayout.CENTER);
contentArea.add(panel3, BorderLayout.SOUTH);

setContentPane(contentArea);
}

public void stateChanged(ChangeEvent event) {
JSlider src = (JSlider) event.getSource();
if (!src.getValueIsAdjusting())
position.setText("Position is " + scale.getValue());
}

public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
if (source == nxtButton) {
tofile();
}

contentArea.remove(myPanel);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
picIcon = new ImageIcon(jpgNames[jpgIndex]);
picButton = new JButton(picIcon);
myPanel.add(picButton);
if (++jpgIndex == jpgNames.length)
jpgIndex = 0;

contentArea.add(myPanel, BorderLayout.NORTH);

setContentPane(contentArea);

contentArea.setVisible(true);
}

public void tofile() {
try {
FileWriter outfile = new FileWriter("data.txt");
PrintWriter pw = new PrintWriter(outfile);
pw.println(scale.getValue());
pw.close();
} catch (IOException e) {
System.out.println(e);
}
// System.exit(0);
}

public static void main(String[] args) {
egg = new Changes3();
}
}
 
G

Geoff Cox

Joan,

I follow what you have done re jpgIndex etc but not clear why now when
I add "true" to

FileWriter outfile = new FileWriter("data.txt", true);

the slider figures are not successively added to the data.txt file?
They did before and I cannot see how your jpgIndex additions would
affect this?!

Geoff




This is a trick they use quite effectively in Java Script, but
not for java.
Any thoughts? Some sort of loop needed?
Click to expand...

Since this is driven by user input which is slow you can generate
the Icons on the fly (unless you expect this to be run by
hundreds
of people simultaneously.)

You could put a "static int" field into the class that starts at
0
and is incremented up to N in "actionPerformed" to keep track of
which image you are using.
You'll need a String[] array to keep the names of the jpg files.
Use the length of the array as N.

Of course, now the values that you write into file "data.txt"
write on top
of each other. Maybe you want to have an array of filenames for
that too.
--------------- this works ----------
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

class Changes3 extends JFrame implements ChangeListener,
ActionListener {

private JSlider scale = new JSlider(-20, +20, 0);
private JLabel position = new JLabel("Set Position");
private JButton nxtButton = new JButton("Next");
private ImageIcon picIcon;
private JButton picButton;
private JPanel myPanel;
private static Changes3 egg;
private Container contentArea;
private BorderLayout myLayout;
private JLabel labText;
private static int jpgIndex = 0;
private static final String[] jpgNames = { "pic1.jpg",
"pic2.jpg", };

public Changes3() {

super("Slider");
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);

contentArea = getContentPane();
myLayout = new BorderLayout();
contentArea.setLayout(myLayout);

scale.setMajorTickSpacing(10);
scale.setMinorTickSpacing(5);
scale.setPaintTicks(true);
scale.setPaintLabels(true);

scale.addChangeListener(this);

labText = new JLabel(
"Look at the picture and indicate on the slider how you
feel.");
nxtButton.addActionListener(this);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
picIcon = new ImageIcon(jpgNames[jpgIndex]);
picButton = new JButton(picIcon);
myPanel.add(picButton);
if (++jpgIndex == jpgNames.length)
jpgIndex = 0;

JPanel panel2 = new JPanel();
panel2.setBackground(Color.white);
panel2.add(labText);

JPanel panel3 = new JPanel();
panel3.setBackground(Color.white);
JLabel slidertext = new JLabel("-20 = Very Bad, +20 = Very
Good");
panel3.add(slidertext);
panel3.add(scale);
panel3.add(nxtButton);

contentArea.add(myPanel, BorderLayout.NORTH);
contentArea.add(panel2, BorderLayout.CENTER);
contentArea.add(panel3, BorderLayout.SOUTH);

setContentPane(contentArea);
}

public void stateChanged(ChangeEvent event) {
JSlider src = (JSlider) event.getSource();
if (!src.getValueIsAdjusting())
position.setText("Position is " + scale.getValue());
}

public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
if (source == nxtButton) {
tofile();
}

contentArea.remove(myPanel);

myPanel = new JPanel();
myPanel.setBackground(Color.blue);
picIcon = new ImageIcon(jpgNames[jpgIndex]);
picButton = new JButton(picIcon);
myPanel.add(picButton);
if (++jpgIndex == jpgNames.length)
jpgIndex = 0;

contentArea.add(myPanel, BorderLayout.NORTH);

setContentPane(contentArea);

contentArea.setVisible(true);
}

public void tofile() {
try {
FileWriter outfile = new FileWriter("data.txt");
PrintWriter pw = new PrintWriter(outfile);
pw.println(scale.getValue());
pw.close();
} catch (IOException e) {
System.out.println(e);
}
// System.exit(0);
}

public static void main(String[] args) {
egg = new Changes3();
}
}
Click to expand...
 
G

Geoff Cox

Joan,

Must have been my mistake, slider values are now being appended to the
file.

Cheers

Geoff
 

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