Variable will not set...

How do we get from here:

creditsEarned = ((Number)creditsEarnedField.getValue()).doubleValue();

System.out.println(String.valueOf(creditsEarned));

... to here:and here is the code that I'm using to print them when they click on the "Print" button.

menuItem.addActionListener(new ActionListener()

{

public void actionPerformed(ActionEvent k)

abillconsla at 2007-7-13 12:00:11 >

All my variables are instanciated at the class level and never redefined as a local variable, thats what really boggled my mind when I was looking through all my code. My teacher is confused as well, would like to see the entire code? I may just be flat our missing something completely obvious...

EmBraCea at 2007-7-13 12:00:11 >

> @abillconsl: I was showing you how I set the

> variables and how I returned them, but I forgot to

> show that they were in different methods. My bad on

> not clarifying that if thats what confused you.

Yes, what I meant was that you leave no way to connect the two uses of the variables or sets of variables. How do we know that comickr is not right?

abillconsla at 2007-7-13 12:00:11 >

package de.must.util;

import java.awt.*;

import java.awt.event.*;

import java.io.*;

import java.applet.*;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.text.*;

import java.beans.PropertyChangeListener;

import java.beans.PropertyChangeEvent;

import java.text.*;

import java.math.*;

import javax.swing.table.*;

public class CreditConversion extends JPanel

implements PropertyChangeListener

{

//Values for the fields

private double creditsEarned;

private double outOf, ARHSCredits, creditTotal;

private int studentNumber;

private double gradeLevel;

private String studentName;

JButton calcButton = null;

private static final boolean noteNotMatchingBookmarks = true;

JCheckBox halfButton;

private static boolean isFullScreen = false;

private static GraphicsDevice device;

//Labels to identify the fields

private JLabel studentNumberLabel;

private JLabel studentNameLabel;

private JLabel creditTotalLabel;

private JLabel creditsEarnedLabel;

private JLabel outOfLabel;

private JLabel gradeLevelLabel;

private JLabel ARHSCreditsLabel;

//String for the labels

private String[] classStrings = {"1/2 Freshmen", "Freshmen","Sophmore","Junior","Senior"};

private String studentNumberString = "Student Number: ";

private String studentNameString = "Student Name: ";

private String creditTotalString = "ARHS Total Credits: ";

private static String creditsEarnedString = "Credits Earned: ";

private static String outOfString = "Credits Possible: ";

private static String gradeLevelString = "Grade Level at ARHS: ";

private static String ARHSCreditsString = "Credits Needed to Graduate: ";

//Fields for data entry

private JFormattedTextField studentNumberField;

private JFormattedTextField studentNameField;

private JFormattedTextField creditTotalField;

private JFormattedTextField creditsEarnedField;

private JFormattedTextField outOfField;

private JFormattedTextField gradeLevelField;

private JFormattedTextField ARHSCreditsField;

//Formats to format and parse numbers

private NumberFormat studentNameFormat;

private NumberFormat studentNumberFormat;

private NumberFormat creditTotalFormat;

private NumberFormat creditsEarnedFormat;

private NumberFormat outOfFormat;

private NumberFormat ARHSCreditsFormat;

public CreditConversion(JFrame frame)

{

super(new BorderLayout());

double creditsNeeded = computeCredits(creditsEarned, outOf, gradeLevel);

calcButton = new JButton("Calculate");

halfButton = new JCheckBox("Half a Year?");

halfButton.setSelected(false);

JComboBox classList = new JComboBox(classStrings);

creditTotalFormat = NumberFormat.getNumberInstance();

creditTotalFormat.setMaximumFractionDigits(1);

ARHSCreditsFormat = NumberFormat.getNumberInstance();

ARHSCreditsFormat.setMaximumFractionDigits(1);

//Create the labels.

studentNameLabel = new JLabel(studentNameString);

studentNumberLabel = new JLabel(studentNumberString);

creditTotalLabel = new JLabel(creditTotalString);

creditsEarnedLabel = new JLabel(creditsEarnedString);

outOfLabel = new JLabel(outOfString);

gradeLevelLabel = new JLabel(gradeLevelString);

ARHSCreditsLabel = new JLabel(ARHSCreditsString);

//Create the text fields and set them up.

studentNameField = new JFormattedTextField(studentNameFormat);

studentNameField.setValue(studentName);

studentNameField.setColumns(10);

studentNameField.addPropertyChangeListener("value", this);

studentNumberField = new JFormattedTextField(studentNumberFormat);

studentNumberField.setValue(new Integer(studentNumber));

studentNumberField.setColumns(10);

studentNumberField.addPropertyChangeListener("value", this);

creditsEarnedField = new JFormattedTextField(creditsEarnedFormat);

creditsEarnedField.setValue(new Double(creditsEarned));

creditsEarnedField.setColumns(10);

creditsEarnedField.addPropertyChangeListener("value", this);

outOfField = new JFormattedTextField(outOfFormat);

outOfField.setValue(new Double(outOf));

outOfField.setColumns(10);

outOfField.addPropertyChangeListener("value", this);

gradeLevelField = new JFormattedTextField();

gradeLevelField.setValue(new Integer(9));

gradeLevelField.setColumns(10);

gradeLevelField.addPropertyChangeListener("value", this);

ARHSCreditsField = new JFormattedTextField(ARHSCreditsFormat);

ARHSCreditsField.setValue(new Double(creditsNeeded));

ARHSCreditsField.setColumns(10);

ARHSCreditsField.setEditable(false);

ARHSCreditsField.setBackground(Color.black);

ARHSCreditsField.setForeground((Color.red));

creditTotalField = new JFormattedTextField(creditTotalFormat);

creditTotalField.setValue(new Double(creditTotal));

creditTotalField.setColumns(10);

creditTotalField.setEditable(false);

creditTotalField.setBackground(Color.black);

creditTotalField.setForeground((Color.cyan).darker());

//Tell accessibility tools about label/textfield pairs.

studentNameLabel.setLabelFor(creditsEarnedField);

studentNumberLabel.setLabelFor(creditsEarnedField);

creditTotalLabel.setLabelFor(creditTotalField);

creditsEarnedLabel.setLabelFor(creditsEarnedField);

outOfLabel.setLabelFor(outOfField);

gradeLevelLabel.setLabelFor(gradeLevelField);

ARHSCreditsLabel.setLabelFor(ARHSCreditsField);

//Lay out the labels in a panel.

JPanel labelPane = new JPanel(new GridLayout(0,1));

labelPane.add(studentNameLabel);

labelPane.add(studentNumberLabel);

labelPane.add(creditsEarnedLabel);

labelPane.add(outOfLabel);

labelPane.add(gradeLevelLabel);

labelPane.add(ARHSCreditsLabel);

labelPane.add(creditTotalLabel);

//Layout the text fields in a panel.

JPanel fieldPane = new JPanel(new GridLayout(0,1));

fieldPane.add(studentNameField);

fieldPane.add(studentNumberField);

fieldPane.add(creditsEarnedField);

fieldPane.add(outOfField);

fieldPane.add(classList);

fieldPane.add(halfButton);

fieldPane.add(ARHSCreditsField);

fieldPane.add(creditTotalField);

//Put the panels in this panel, labels on left,

//text fields on right.

setBorder(BorderFactory.createEmptyBorder(40, 40, 20, 20));

add(labelPane, BorderLayout.CENTER);

add(fieldPane, BorderLayout.LINE_END);

//add(halfButton, BorderLayout.NORTH);

add(calcButton, BorderLayout.SOUTH);

calcButton.addActionListener(new ActionListener()

{

public void actionPerformed(ActionEvent e)

{

ARHSCredits = computeCredits(creditsEarned, outOf, gradeLevel);

ARHSCreditsField.setValue(new Double(ARHSCredits));

creditTotalField.setValue(new Double(creditTotal));

System.out.println(getCredits());

return;

}

});

halfButton.addActionListener(new ActionListener()

{

public void actionPerformed(ActionEvent e)

{

if(halfButton.isSelected() == true)

gradeLevel = (gradeLevel + (.5));

else

gradeLevel = (gradeLevel - (.5));

}

});

classList.addActionListener(new ActionListener()

{

public void actionPerformed(ActionEvent e)

{

JComboBox cb = (JComboBox)e.getSource();

gradeLevel = cb.getSelectedIndex();

}

});

}

public JMenuBar createMenuBar()

{

JMenuBar menuBar;

JMenu menu;

JMenuItem menuItem, menuItem2;

//Create the menu bar.

menuBar = new JMenuBar();

//Build the first menu.

menu = new JMenu("File");

menu.setMnemonic(KeyEvent.VK_A);

menu.getAccessibleContext().setAccessibleDescription(

"");

menuBar.add(menu);

menuItem2 = new JMenuItem("New",

KeyEvent.VK_N);

menuItem2.setAccelerator(KeyStroke.getKeyStroke(

KeyEvent.VK_1, ActionEvent.ALT_MASK));

menuItem = new JMenuItem("Print",

KeyEvent.VK_P);

menuItem.setAccelerator(KeyStroke.getKeyStroke(

KeyEvent.VK_2, ActionEvent.ALT_MASK));

menu.add(menuItem2);

menu.add(menuItem);

menuItem.addActionListener(new ActionListener()

{

public void actionPerformed(ActionEvent k)

{

//WordProcessing.createNewDocumentFromTemplate("creditConversion");

//WordProcessing.typeTextAtBookmark("studentName", studentName);

System.out.println(studentName);

//WordProcessing.typeTextAtBookmark("studentNumber", studentNumber);

System.out.println(studentNumber);

//WordProcessing.typeTextAtBookmark("creditsEarned", creditsEarned);

System.out.println(creditsEarned);

//WordProcessing.typeTextAtBookmark("remainingCredits", ARHSCredits);

System.out.println(ARHSCredits);

//WordProcessing.typeTextAtBookmark("totalCreditsNeeded", creditTotal);

//WordProcessing.printToPrinterToSelectByUserAndForget();

//WordProcessing.quitApplication();

//WordProcessing.exec();

System.out.println(getCredits());

}

});

/*menuItem2.addActionListener(new ActionListener()

{

public void actionPerformed(ActionEvent k)

{

Double nothing = new Double(0.0);

creditsEarned = 0.0;

creditsEarnedField.setValue(nothing);

outOf = 0.0;

outOfField.setValue(nothing);

ARHSCredits = 0.0;

ARHSCreditsField.setValue(nothing);

creditTotal = 0.0;

creditTotalField.setValue(nothing);

studentNumber = 0;

studentNumberField.setValue(new Integer(0));

gradeLevel = 0.0;

studentName = "";

studentNameField.setValue("");

}

});*/

return menuBar;

}

/** Called when a field's "value" property changes. */

public void propertyChange(PropertyChangeEvent e)

{

Object source = e.getSource();

if (source == creditsEarnedField)

{

creditsEarned = ((Number)creditsEarnedField.getValue()).doubleValue();

System.out.println(String.valueOf(creditsEarned));

}

else if (source == outOfField)

{

outOf = ((Number)outOfField.getValue()).doubleValue();

System.out.println(String.valueOf(outOf));

}

else if (source == studentNameField)

{

studentName = ((String)studentNameField.getValue());

System.out.println(studentName);

}

else if (source == studentNumberField)

{

studentNumber = ((Number)studentNumberField.getValue()).intValue();

System.out.println(String.valueOf(studentNumber));

}

}

private static void createAndShowGUI()

{

/*GraphicsEnvironment env = GraphicsEnvironment.

getLocalGraphicsEnvironment();

GraphicsDevice device = env.getDefaultScreenDevice();

GraphicsConfiguration gc = device.getDefaultConfiguration();*/

JFrame.setDefaultLookAndFeelDecorated(false);

//Create and set up the window.

JFrame frame = new JFrame("ARHS Credit Conversion");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//Create and set up the content pane.

JComponent newContentPane = new CreditConversion(frame);

newContentPane.setOpaque(true); //content panes must be opaque

frame.setContentPane(newContentPane);

CreditConversion list = new CreditConversion(frame);

frame.setJMenuBar(list.createMenuBar());

/*frame.setUndecorated(true);

frame.setIgnoreRepaint(false);

device.setFullScreenWindow(frame);*/

//Display the window.

frame.pack();

frame.setVisible(true);

}

public static void main(String[] args)

{

//Schedule a job for the event-dispatching thread:

//creating and showing this application's GUI.

javax.swing.SwingUtilities.invokeLater(new Runnable()

{

public void run()

{

createAndShowGUI();

}

});

}

public double getCredits()

{

return creditTotal;

}

public double computeCredits(double myCreditsEarned, double myOutOf, double myGradeLevel)

{

double creditPercent, arhsCredits, arhsCreditsPossible=0, neededCredits=0.0;

if(myGradeLevel==0)

arhsCreditsPossible = 3;

else if(myGradeLevel==1)

arhsCreditsPossible = 6;

else if(myGradeLevel==1.5)

arhsCreditsPossible = 9;

else if(myGradeLevel==2)

arhsCreditsPossible = 12;

else if(myGradeLevel==2.5)

arhsCreditsPossible = 15;

else if(myGradeLevel==3)

arhsCreditsPossible = 18;

else if(myGradeLevel==3.5)

arhsCreditsPossible = 21;

else if(myGradeLevel==4)

arhsCreditsPossible = 24;

creditPercent = (myCreditsEarned/myOutOf);

arhsCredits = (creditPercent*arhsCreditsPossible);

neededCredits = (22.50 - arhsCredits);

creditTotal = arhsCredits;

return neededCredits;

}

}

There it is, I must be having a brain ****(passing gas) cause after your last post I looked around at all my variable definitions and didn't see them getting reset. Although I think thats what happening but I'm just not seeing it. Gah, I feel like such a newb.... Also, I'm not near completion so this probably isn't the most efficient program on he planet but I hope to make it much better.

EmBraCea at 2007-7-13 12:00:11 >

I'll try yours in abit work but I tried MLRon's and it printed the SOP 2x and then null. The null is fromstudentName = ((String)studentNameField.getValue());

System.out.println(studentName);

because it starts in that box which triggers the SOP but with no input, once something is typed it prints the typed thing. But it being printed 2x means it''s being called on 2x. Interesting...

EmBraCea at 2007-7-20 22:06:56 >