hello I'm haveing alot of trouble here, i couldnt figure out how to get the pie to reflect my amoritization output using on only 2 slices and I haev to hand in something today so I thought I would jsut color the 4 sections with representative colors. If a person chose option 1 and clicked on display pie then the corresponding chart woudl appear but when I click on display pie nothing happens. and advice woudl be greatly apprecaited by a novice.
import java.awt.Color;
import java.awt.Container;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.text.NumberFormat;
import javax.swing.BoxLayout;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;
/**
* This is code based on the layout design created by David Lilley
* POS 407 student January 2006. He wanted this layout and could not
* achieve it as he wanted. I wrote the code to show him how to do it in
* return for me using the code as an example for future classes. I hope you
* enjoy.
* @author Chip Dickson
*/
public class LayoutExample1 extends JFrame implements ActionListener
{
private static final long serialVersionUID = 4364582253350924044L;
private Container jContentPane = null;
private JSplitPane splitpane = null;
private JPanel leftpanel = null;
private JScrollPane rightpane = null;
private JTextArea amortization_out = null;
private JRadioButton option1 = null;
private JRadioButton option2 = null;
private JRadioButton option3 = null;
private ButtonGroup btgroup_options;
private ButtonGroup btgroup_plans;
private JLabel lb_terms = null;
private JTextField tf_terms = null;
private JLabel lb_interest = null;
private JTextField tf_interest = null;
private JLabel lb_principal = null;
private JTextField tf_principal = null;
private JCheckBox plan_a = null;
private JCheckBox plan_b = null;
private JButton calc_button = null;
private JButton exit_button = null;
private JLabel lb_payment=null;
private JTextField tf_payment = null;
private JButton clear_button = null;
private JButton show_pie = null;
private String[] listItems;
private NumberFormat fmt = NumberFormat.getInstance();
String[] pieitems = {"5.35", "5.50", "7.50", "8.50"};
Color uneasyBeingGreen = new Color(0xCC, 0xCC, 0x99);
Color zuzusPetals = new Color(0xCC, 0x66, 0xFF);
Color zootSuit = new Color(0x66, 0x66, 0x99);
Color sweetHomeAvocado = new Color(0x66, 0x99, 0x66);
Color shrinkingViolet = new Color(0x66, 0x66, 0x99);
Color miamiNice = new Color(0x33, 0xFF, 0xFF);
Color inBetweenGreen = new Color(0x00, 0x99, 0x66);
Color norwegianBlue = new Color(0x33, 0xCC, 0xCC);
Color purpleRain = new Color(0x66, 0x33, 0x99);
Color freckle = new Color(0x99, 0x66, 0x33);
/**
* Constructor
*/
public LayoutExample1()
{
super();
initialize();
}
/**
* Initialize everyting.
*
*/
private void initialize()
{
listItems = loadListItems("loadtest.txt");
// set up the basics
// set up the number formatter... BTW there is also a currency formatter
fmt.setGroupingUsed(true);
fmt.setMaximumFractionDigits(2);
fmt.setMinimumFractionDigits(2);
jContentPane = this.getContentPane();
setTitle("Mcbride Financial Services Mortgage Calculator"); // I changed title
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Notice the top pane is just a simple BoxLayout
jContentPane.setLayout(new BoxLayout(jContentPane, BoxLayout.X_AXIS));
// create a splitpane to layout out code
splitpane = new JSplitPane();
// make the splitter up and down...
splitpane.setOrientation(JSplitPane.VERTICAL_SPLIT);
splitpane.setDividerSize(2);
splitpane.setDividerLocation(200); // set the divider a little off from the middle
//splitpane.setEnabled(false); // locks the divider bar
// Call the method to load the left side of the split pane
loadLeftSide();
// load the right side of the split pane
loadRightSide();
// add the split pane to the content pane
jContentPane.add(splitpane, null);
}
private String [] loadListItems(String filename)
{
// assumes you have 4 entries in your file
String [] retval = new String [4];
int index = 0;
try
{
// If you are not an applet, uncomment these two lines and comment out the other 2.
File fromFile = new File(filename);
BufferedReader reader = new BufferedReader(new FileReader(fromFile));
String line = reader.readLine();
while(line != null)
{
retval[index] = line;
line = reader.readLine();
index++;
}
return retval;
}
catch (IOException e)
{
System.err.println(e.getMessage());
return null;
}
}
/**
*
*/
private void loadRightSide()
{
// Not much to the right side... just a JScrollPane and the textArea to go in it...
rightpane = new JScrollPane();
// make the scroll bars always be there
rightpane.setHorizontalScrollBarPolicy(javax.swing.JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
rightpane.setVerticalScrollBarPolicy(javax.swing.JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
// give ourselves a nice boarder
rightpane.setViewportBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.LOWERED));
amortization_out = new JTextArea();
Font displayFont = new Font("Serif", Font.BOLD, 14);
// don't want folks typing in here... so we better not let them.
amortization_out.setEditable(false);
amortization_out.setFont(displayFont);
amortization_out.setText("This is some sample text.\nIt shows how this might look.");
rightpane.setViewportView(amortization_out);
splitpane.setRightComponent(rightpane);
}
/**
*
*/
private void loadLeftSide()
{
leftpanel = new JPanel();
leftpanel.setComponentOrientation(java.awt.ComponentOrientation.LEFT_TO_RIGHT);
// add a nice boarder to the panel
leftpanel.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.SoftBevelBorder.LOWERED));
// we are using a grid bag layout for this...
leftpanel.setLayout(new GridBagLayout());
// we want 2 button groups (one on top, one on the bottom)
// this is how you make your radio buttons turn off when another is clicked on
btgroup_options = new ButtonGroup();
btgroup_plans = new ButtonGroup();
// GridBagLayout Base constraints
GridBagConstraints gridBagConstraints = new GridBagConstraints();
gridBagConstraints.insets = new java.awt.Insets(0, 0, 0, 0);
gridBagConstraints.gridy = 0;
gridBagConstraints.ipadx = 0;
gridBagConstraints.ipady = 0;
gridBagConstraints.gridx = 0;
// Create all our components
option1 = new JRadioButton(listItems[0]);
option1.addActionListener(this);
option2 = new JRadioButton(listItems[1]);
option2.addActionListener(this);
option3 = new JRadioButton(listItems[2]);
option3.addActionListener(this);
// put the buttons in a group
btgroup_options.add(option1);
option1.setSelected(true); // sets the default button on
btgroup_options.add(option2);
btgroup_options.add(option3);
lb_terms = new JLabel("Terms");
lb_interest = new JLabel("Interest");
lb_principal = new JLabel("Principal");
lb_payment = new JLabel("Payment");
// we are strtin with option 1 selected... so lets put the text in our fields
String [] selection = listItems[0].split("% for "); // should leave us with the rate and the years
tf_terms = new JTextField();
tf_terms.setText(selection[1].substring(0,2).trim());
tf_terms.setEditable(false); // can't edit because we are in preset mode.
tf_interest = new JTextField(selection[0]);
tf_interest.setEditable(false);
tf_principal = new JTextField();
tf_payment = new JTextField();
tf_payment.setEditable(false);
plan_a = new JCheckBox("Manual Entry");
plan_a.addActionListener(this);
plan_b = new JCheckBox("Prepared Plan");
plan_b.addActionListener(this);
plan_b.setSelected(true); // sets the default selection
btgroup_plans.add(plan_a);
btgroup_plans.add(plan_b);
calc_button = new JButton("Calculate");
// add the action listener
calc_button.addActionListener(this);
clear_button = new JButton("Clear"); // me
// add the clear action command me
clear_button.addActionListener(this);// me
exit_button = new JButton("Exit");
// add the action listener
exit_button.addActionListener(this);
show_pie = new JButton("Show Pie");
show_pie.addActionListener(this);
// lay the components out
// all of these are on the first row (y=0)
leftpanel.add(option1, gridBagConstraints);
gridBagConstraints.gridx = 1;
leftpanel.add(option2, gridBagConstraints);
gridBagConstraints.gridx = 2;
leftpanel.add(option3, gridBagConstraints);
// **** Second row
gridBagConstraints.gridx = 0;
gridBagConstraints.gridy = 1;
leftpanel.add(lb_terms, gridBagConstraints);
gridBagConstraints.gridx = 1;
// we want the text fields to go across 2 cells
gridBagConstraints.gridwidth = 2;
// ... and we want it to fill the space
gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
leftpanel.add(tf_terms, gridBagConstraints);
// set everything back to default
gridBagConstraints.fill = java.awt.GridBagConstraints.NONE;
gridBagConstraints.gridwidth = 1;
// **** Third row
gridBagConstraints.gridx = 0;
gridBagConstraints.gridy = 2;
leftpanel.add(lb_interest, gridBagConstraints);
gridBagConstraints.gridx = 1;
// we want the text fields to go across 2 cells
gridBagConstraints.gridwidth = 2;
// ... and we want it to fill the space
gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
leftpanel.add(tf_interest, gridBagConstraints);
// set everything back to default
gridBagConstraints.fill = java.awt.GridBagConstraints.NONE;
gridBagConstraints.gridwidth = 1;
// **** Fourth row
gridBagConstraints.gridx = 0;
gridBagConstraints.gridy = 3;
leftpanel.add(lb_principal, gridBagConstraints);
gridBagConstraints.gridx = 1;
// we want the text fields to go across 2 cells
gridBagConstraints.gridwidth = 2;
// ... and we want it to fill the space
gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
leftpanel.add(tf_principal, gridBagConstraints);
// set everything back to default
gridBagConstraints.fill = java.awt.GridBagConstraints.NONE;
gridBagConstraints.gridwidth = 1;
// **** Fith row
gridBagConstraints.gridx = 0;
gridBagConstraints.gridy = 4;
leftpanel.add(lb_payment, gridBagConstraints);
gridBagConstraints.gridx = 1;
// we want the text fields to go across 2 cells
gridBagConstraints.gridwidth = 2;
// ... and we want it to fill the space
gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
leftpanel.add(tf_payment, gridBagConstraints);
// set everything back to default
gridBagConstraints.fill = java.awt.GridBagConstraints.NONE;
gridBagConstraints.gridwidth = 1;
// **** Sixth Row
gridBagConstraints.gridx = 0;
gridBagConstraints.gridy = 5;
leftpanel.add(plan_a, gridBagConstraints);
gridBagConstraints.gridx = 1;
leftpanel.add(plan_b, gridBagConstraints);
// Buttons are sort of funny, so we have to do a little extra work to get them to look right
// in this layout. I will create individual contraints for each... you could create constrains
// for every component, and in a more sophisticated layout, you probably would.
// **** Seventh row
GridBagConstraints calc_constraints = new GridBagConstraints();
calc_constraints.insets = new java.awt.Insets(0, 0, 0, 0);
calc_constraints.gridy = 6;
calc_constraints.ipadx = 10;
calc_constraints.ipady = 11;
calc_constraints.gridx = 0;
leftpanel.add(calc_button, calc_constraints);
GridBagConstraints clear_constraints = new GridBagConstraints(); // me
clear_constraints.insets = new java.awt.Insets(0, 0, 0, 0); // me
clear_constraints.gridy = 6; // me
clear_constraints.ipadx = 20; // me
clear_constraints.ipady = 11; // me
clear_constraints.gridx = 1; // me
leftpanel.add(clear_button, clear_constraints); // me
GridBagConstraints pie_constraints = new GridBagConstraints();
pie_constraints.insets = new java.awt.Insets(0, 0, 0, 0);
pie_constraints.gridy = 6;
pie_constraints.ipadx = 30;
pie_constraints.ipady = 11;
pie_constraints.gridx = 2;
leftpanel.add(show_pie, pie_constraints);
GridBagConstraints exit_constraints = new GridBagConstraints();
exit_constraints.insets = new java.awt.Insets(0, 0, 0, 0);
exit_constraints.gridy = 6;
exit_constraints.ipadx = 40;
exit_constraints.ipady = 11;
exit_constraints.gridx = 3;
leftpanel.add(exit_button, exit_constraints);
// put the left hand side in the split pane
splitpane.setLeftComponent(leftpanel);
}
/* (non-Javadoc)
* @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
*/
public void actionPerformed(ActionEvent e)
{
Object source = e.getSource();
if(source == show_pie)
{
if (source == option1)
{
// this is totally useless, but you can put what ever you like in place of the pieitems
// This would NOT meet the requirements... what you put in the pie, or a graph would need
// to be related to a mortgage.
PiePanel pie2 = new PiePanel(listItems.length);
pie2.addSlice(purpleRain, Float.parseFloat(pieitems[0]));
pie2.addSlice(inBetweenGreen, Float.parseFloat(pieitems[1]));
pie2.addSlice(inBetweenGreen, Float.parseFloat(pieitems[2]));
pie2.addSlice(inBetweenGreen, Float.parseFloat(pieitems[3]));
final JFrame frame = new JFrame("Purple = interest, Green = Principal"); // added title as pie label
frame.getContentPane().add(pie2);
frame.pack();
frame.setSize(500,500);
frame.setVisible(true);
}
if (source == option2)
{
PiePanel pie2 = new PiePanel(listItems.length);
pie2.addSlice(purpleRain, Float.parseFloat(pieitems[0]));
pie2.addSlice(purpleRain, Float.parseFloat(pieitems[1]));
pie2.addSlice(inBetweenGreen, Float.parseFloat(pieitems[2]));
pie2.addSlice(inBetweenGreen, Float.parseFloat(pieitems[3]));
final JFrame frame = new JFrame("Purple = interest, Green = Principal"); // added title as pie label
frame.getContentPane().add(pie2);
frame.pack();
frame.setSize(500,500);
frame.setVisible(true);
}
if (source == option3)
{
PiePanel pie2 = new PiePanel(listItems.length);
pie2.addSlice(purpleRain, Float.parseFloat(pieitems[0]));
pie2.addSlice(purpleRain, Float.parseFloat(pieitems[1]));
pie2.addSlice(purpleRain, Float.parseFloat(pieitems[2]));
pie2.addSlice(inBetweenGreen, Float.parseFloat(pieitems[3]));
final JFrame frame = new JFrame("Purple = interest, Green = Principal"); // added title as pie label
frame.getContentPane().add(pie2);
frame.pack();
frame.setSize(500,500);
frame.setVisible(true);
}
}
else
{
// no matter what the user has clicked, the ammortization table is dirty... So clear it:
amortization_out.setText("");
tf_payment.setText("");
}
if (source == exit_button)
{
System.exit(0);
}
if (source == clear_button)
{
tf_terms.setText(""); // clears the loan amount field
tf_interest.setText(""); // clears the term field
tf_principal.setText(""); // clears the payment field
amortization_out.setText(""); // clears amortization output
tf_payment.setText("");
}
if (source == calc_button)
{
// YIPEE, call our MortgageCalc class.. but for now... lets do some error checking.
try
{
double principle = Double.parseDouble(tf_principal.getText().trim()); // this throws a NumberFormatException if the text is not a number
double rate = Double.parseDouble(tf_interest.getText().trim())/100;
int terms = Integer.parseInt(tf_terms.getText().trim());
MortgageCalculator cal = new MortgageCalculator(principle,rate,terms);
tf_payment.setText("$"+fmt.format(cal.getMonthlypayment()));
amortization_out.setText(cal.getAmortizationTableAsString());
// set the text area back to the top..
amortization_out.setCaretPosition(0);
}
catch (NumberFormatException nfe)
{
// Tell the user about the error...
JOptionPane.showMessageDialog(null, "Please make sure all your entries are numeric!", "USER INPUT ERROR", JOptionPane.ERROR_MESSAGE);
}
}
if(source == option1)
{
String [] selection = listItems[0].split("% for "); // should leave us with the rate and the years
tf_terms.setText(selection[1].substring(0,2));
tf_interest.setText(selection[0]);
}
if(source == option2)
{
String [] selection = listItems[1].split("% for "); // should leave us with the rate and the years
tf_terms.setText(selection[1].substring(0,2));
tf_interest.setText(selection[0]);
}
if(source == option3)
{
String [] selection = listItems[2].split("% for "); // should leave us with the rate and the years
tf_terms.setText(selection[1].substring(0,2));
tf_interest.setText(selection[0]);
}
if(source == plan_a)
{
// ok so we want to do this manually...
option1.setEnabled(false);
option1.setSelected(false);
option2.setEnabled(false);
option2.setSelected(false);
option3.setEnabled(false);
option3.setSelected(false);
tf_terms.setText("");
tf_terms.setEditable(true);
tf_interest.setText("");
tf_interest.setEditable(true);
}
if(source == plan_b)
{
// ok so we want to do this with presets...
option1.setEnabled(true);
option2.setEnabled(true);
option3.setEnabled(true);
//select 1 again
option1.setSelected(true);
String [] selection = listItems[0].split("% for "); // should leave us with the rate and the years
tf_terms.setText(selection[1].substring(0,2));
tf_interest.setText(selection[0]);
tf_terms.setEditable(false);
tf_interest.setEditable(false);
}
}
/**
* Inner class to limit the size of a text field.
* Could be in a seperate file, but since we are only using it for this class, it should be here.
*
* NOTE: This is not the same as defining 2 classes in the same file. This class is part of the top class
* That is why it is consided an inner class. Other than this type of thing, you have no reason to have
* an inner class in your work.
*
* Also, if you want to limit the input of a text field in your code, feel free to copy this as is and use it.
*/
public class JTextFieldLimit extends PlainDocument
{
private static final long serialVersionUID = -349808007443039827L;
private int limit;
// optional uppercase conversion
private boolean toUppercase = false;
JTextFieldLimit(int limit)
{
super();
this.limit = limit;
}
/**
* Sets the limit, and if you pass in true here.. will force the
* input to upper case before displaying it.
* @param limit
* @param upper
*/
JTextFieldLimit(int limit, boolean upper)
{
super();
this.limit = limit;
toUppercase = upper;
}
/**
* This is a callback method used by Java when text is entered into a text field. This is the
* place we can check the length before we actually place the character in the GUI.
*/
public void insertString(int offset, String str, AttributeSet attr) throws BadLocationException
{
if (str == null)
return;
if ((getLength() + str.length()) <= limit)
{
if (toUppercase)
str = str.toUpperCase();
super.insertString(offset, str, attr);
}
}
}
/**
* MAIN... the entry point to this program
* @param args
*/
public static void main(String[] args)
{
LayoutExample1 example = new LayoutExample1();
example.setVisible(true);
}
}most of it is my instructors code used with his permission I just have to modify the code to display a chart reflecting the different options
