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Join Date: Mar 2007
Posts: 25
Reputation: 
Rep Power: 2
Solved Threads: 0
Light Poster
I need to
Modify the Inventory Program by adding a button to the GUI that allows the user to move to the first item, the previous item, the next item, and the last item in the inventory. If the first item is displayed and the user clicks on the Previous button, the last item should display. If the last item is displayed and the user clicks on the Next button, the first item
should display.
Add a company logo to the GUI using Java graphics classes.
This is what I have so far.
Modify the Inventory Program by adding a button to the GUI that allows the user to move to the first item, the previous item, the next item, and the last item in the inventory. If the first item is displayed and the user clicks on the Previous button, the last item should display. If the last item is displayed and the user clicks on the Next button, the first item
should display.
Add a company logo to the GUI using Java graphics classes.
This is what I have so far.
import java.awt.*;
import java.awt.event.*;
import java.text.NumberFormat; // used to format currency
import javax.swing.*;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
class InventoryMain implements ActionListener
{
CD[] product;
JTextField[] fields;
NumberFormat nf;
public void actionPerformed(ActionEvent e)
{
int index = ((JComboBox)e.getSource()).getSelectedIndex();
populateFields(index);
}
public static void main(String[] args)
{
try
{
UIManager.setLookAndFeel(
"com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
}
catch (Exception e)
{
System.err.println(e.getClass().getName() + ": " + e.getMessage());
}
InventoryMain test = new InventoryMain();
test.initCD();
test.showGUI();
test.populateFields(0);
}
/**
*
*/
public void initCD() {
//Create an array
product = new CD[10];
//fill in the classes
product[0] = new CD( 1, "Crowbar" , 20.00, 10, "00722");
product[1] = new CD( 2, "Pantera" , 20.00, 10, "00263");
product[2] = new CD( 3, "Ozzy" , 15.00, 10, "00142");
product[3] = new CD( 4, "Soulfly" , 18.00, 10, "00553");
product[4] = new CD( 5, "Down", 24.00, 10, "00789");
product[5] = new CD( 6, "God Forbid" , 10.00, 10, "00712");
product[6] = new CD( 7, "Black Label Society" , 16.00, 10, "00458" );
product[7] = new CD( 8, "Saint Vitus" , 15.00, 10, "00889");
product[8] = new CD( 9, "Clearlight" , 15.00, 10, "00897");
product[9] = new CD( 10, "Testament" , 15.00, 10, "00656");
//Sort elements in array in alphabetical order by product name
// product[0].sortItems(product);
final JButton firstBtn = new JButton("First"); // first button
final JButton prevBtn = new JButton("Previous"); // previous button
final JButton nextBtn = new JButton("Next"); // next button
final JButton lastBtn = new JButton("Last"); // last button
final JLabel label; // logo
final JTextArea textArea; // text area for product list
final JPanel buttonJPanel; // panel to hold buttons
//JLabel constructor for logo
Icon logo = new ImageIcon("C:/logo.jpg"); // load logo
label = new JLabel(logo); // create logo label
label.setToolTipText("Company Logo"); // create tooltip
}
private void showGUI() {
JLabel l;
JButton b;
fields = new JTextField[9];
JComboBox combo = new JComboBox();
for(int j = 0; j < product.length; j++)
combo.addItem(product[j].getName());
combo.addActionListener(this);
JFrame f = new JFrame("InventoryGUI");
Container cp = f.getContentPane();
cp.setLayout(new GridBagLayout());
cp.setBackground(UIManager.getColor("control"));
GridBagConstraints c = new GridBagConstraints();
c.gridx = 0;
c.gridy = GridBagConstraints.RELATIVE;
c.gridwidth = 1;
c.gridheight = 1;
c.insets = new Insets(2, 2, 2, 2);
c.anchor = GridBagConstraints.EAST;
cp.add(l = new JLabel("Item Number:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('a');
cp.add(l = new JLabel("Item Name:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('b');
cp.add(l = new JLabel("Number of Units in Stock:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('c');
cp.add(l = new JLabel("Price per Unit: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('d');
cp.add(l = new JLabel("Total cost of This Item: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('e');
cp.add(l = new JLabel("Total Value of All Merchandise in Inventory: $",
SwingConstants.CENTER), c); l.setDisplayedMnemonic('f');
cp.add(l = new JLabel("Item Code:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('g');
cp.add(l = new JLabel("Product Restocking Fee: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('h');
cp.add(combo, c);
c.gridx = 1;
c.gridy = 0;
c.weightx = 1.0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.CENTER;
cp.add(fields[0] = new JTextField(), c);
fields[0].setFocusAccelerator('a');
c.gridx = 1;
c.gridy = GridBagConstraints.RELATIVE;
cp.add(fields[1] = new JTextField(), c); fields[1].setFocusAccelerator('b');
cp.add(fields[2] = new JTextField(), c); fields[2].setFocusAccelerator('c');
cp.add(fields[3] = new JTextField(), c); fields[3].setFocusAccelerator('d');
cp.add(fields[4] = new JTextField(), c); fields[4].setFocusAccelerator('e');
cp.add(fields[5] = new JTextField(), c); fields[5].setFocusAccelerator('f');
cp.add(fields[6] = new JTextField(), c); fields[6].setFocusAccelerator('g');
cp.add(fields[7] = new JTextField(), c); fields[7].setFocusAccelerator('h');
cp.add(fields[8] = new JTextField(), c); fields[8].setFocusAccelerator('i');
c.weightx = 0.0;
c.fill = GridBagConstraints.NONE;
cp.add(b = new JButton("OK"), c);
cp.add(b = new JButton("First"),c); // set up panel
cp.add(b = new JButton("Prev"),c);
cp.add(b = new JButton("Next"),c);
cp.add(b = new JButton("Last"),c);
b.setMnemonic('o');
f.pack();
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent evt)
{
System.exit(0);
}
});
f.setVisible(true);
}
private void populateFields(int index) {
CD cd = product[index];
fields[0].setText(Long.toString(cd.getNumberCode()));
fields[1].setText(cd.getName());
fields[2].setText(Long.toString(cd.getUnits()));
fields[3].setText(Double.toString(cd.getPrice()));
fields[4].setText(Double.toString(cd.getSum()));
fields[5].setText(Double.toString(cd.totalAllInventory(product)));
fields[6].setText(cd.getCode());
fields[7].setText(Double.toString(cd.getSum()*.05));
}
}
class CD {
int itemNumber;
String name;
int units;
double price;
String itemCode;
public CD(int n, String name, double price, int units, String itemCo) {
itemNumber = n;
this.name = name;
this.price = price;
this.units = units;
itemCode = itemCo;
}
public int getNumberCode() { return itemNumber; }
public String getName() { return name; }
public int getUnits() { return units; }
public double getPrice() { return price; }
public double getSum() { return units*price; }
public String getCode() { return itemCode; }
public double totalAllInventory(CD[] cds) {
double total = 0;
for(int j = 0; j < cds.length; j++)
total += cds[j].getSum();
return total;
}
}
public class InventoryI {
String productnumber;
String name;
int numberofunits;
double priceperunit;
String itemcode;
// Create a new instance of Inventory
// main constructor for the class
public InventoryI(String Item_Number, String Item_Name, int Items_in_Stock,
double Item_Price, String Item_Code) {
productnumber = Item_Number;
name = Item_Name;
numberofunits = Items_in_Stock;
priceperunit = Item_Price;
itemcode = Item_Code;
}
public void setItemName(String Item_Name) {
// sets the items name
name = Item_Name;
}
public void setItemCode(String Item_Code) {
// sets the items name
itemcode = Item_Code;
}
public void setItemNumber(String Item_Number) { // Sets the Product =Number
// for the item
productnumber = Item_Number;
}
public void setItemsInStock(int Items_in_Stock) { // sets the =number of
// units in stock
numberofunits = Items_in_Stock;
}
public void setItemPrice(double Item_Price) { // sets the price of =the
// item
priceperunit = Item_Price;
}
public String getItemName() { // returns the Product Name of this item
return name;
}
public String getItemCode() { // returns the Product Name of this item
return itemcode;
}
public String getItemNumber() { // returns the Product Number of the =item
return productnumber;
}
public int getItemsInStock() { // returns how many units are in stock
return numberofunits;
}
public double getItemPrice() { // returns the price of the item
return priceperunit;
}
public double getInventoryIValue() { // returns the total value of =the stock
// for this item
return priceperunit * numberofunits;
}
public static double getTotalValueOfAllInventory(InventoryI [] inv) {
double tot = 0.0;
for(int i = 0; i < inv.length; i++)
tot += inv[i].getInventoryIValue();
return tot;
}
public static InventoryI[] sort(InventoryI [] inventory)
{
InventoryI temp[] = new InventoryI[1];
//sorting the array using Bubble Sort
for(int j = 0; j < inventory.length - 1; j++)
{
for(int k = 0; k < inventory.length - 1; k++)
{
if(inventory[k].getItemName().compareToIgnoreCase(inventory[k+1].getItemName()) > 0)
{
temp[0] = inventory[k];
inventory[k] = inventory[k+1];
inventory[k+1] = temp[0];
}//end if
}//end for loop
}//end for loop
return inventory;
}
public String toString()
{
StringBuffer sb = new StringBuffer();
sb.append("CD Title: \t").append(name).append("\n");
sb.append("Item Code: \t").append(itemcode).append("\n");
sb.append("Item #: \t").append(productnumber).append("\n");
sb.append("Number in stock:\t").append(numberofunits).append("\n");
sb.append("Price: \t").append(String.format("$%.2f%n", priceperunit));
sb.append("Inventory Value:\t").append(String.format("$%.2f%n", this.getInventoryIValue()));
return sb.toString();
}
}
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Join Date: Mar 2007
Posts: 25
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Solved Threads: 0
Light Poster
I forgot to say that my code compiles and runs showing the buttons but the buttons do nothing.
•
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Join Date: May 2007
Location: USA
Posts: 2,599
Reputation:
Rep Power: 11
Solved Threads: 257
You actually define the buttons twice, once in the initCD() method and then again in showGUI(), but you do not add any ActionListeners (or Actions, both are valid) to be executed when the buttons are pressed.
How To Use Actions
How To Use Actions
Last edited by Ezzaral : Sep 6th, 2007 at 4:07 pm. Reason: added link
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Join Date: Mar 2007
Posts: 25
Reputation:
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Light Poster
here is the code with changes,
import java.awt.*;
import java.awt.event.*;
import java.text.NumberFormat; // used to format currency
import javax.swing.*;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
class InventoryMain extends Frame implements ActionListener
{
CD[] product;
JTextField[] fields;
NumberFormat nf;
JButton b;
public void actionPerformed(ActionEvent e)
{
int index = ((JComboBox)e.getSource()).getSelectedIndex();
populateFields(index);
}
public static void main(String[] args)
{
try
{
UIManager.setLookAndFeel(
"com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
}
catch (Exception e)
{
System.err.println(e.getClass().getName() + ": " + e.getMessage());
}
InventoryMain test = new InventoryMain();
test.initCD();
test.showGUI();
test.populateFields(0);
}
/**
*
*/
public void initCD() {
//Create an array
product = new CD[10];
//fill in the classes
product[0] = new CD( 1, "Crowbar" , 20.00, 10, "00722");
product[1] = new CD( 2, "Pantera" , 20.00, 10, "00263");
product[2] = new CD( 3, "Ozzy" , 15.00, 10, "00142");
product[3] = new CD( 4, "Soulfly" , 18.00, 10, "00553");
product[4] = new CD( 5, "Down", 24.00, 10, "00789");
product[5] = new CD( 6, "God Forbid" , 10.00, 10, "00712");
product[6] = new CD( 7, "Black Label Society" , 16.00, 10, "00458" );
product[7] = new CD( 8, "Saint Vitus" , 15.00, 10, "00889");
product[8] = new CD( 9, "Clearlight" , 15.00, 10, "00897");
product[9] = new CD( 10, "Testament" , 15.00, 10, "00656");
//Sort elements in array in alphabetical order by product name
// product[0].sortItems(product);
b = new JButton("First"); // first button
b.addActionListener(this);
b = new JButton("Previous"); // previous button
b.addActionListener(this);
b = new JButton("Next"); // next button
b.addActionListener(this);
b = new JButton("Last"); // last button
}
// inner class for button event handling
private class ButtonHandler implements ActionListener
{
// handle button event
public void actionPerformed( ActionEvent event )
{
// System.out.println(event.getActionCommand());
// See which button was pressed
if (event.getActionCommand()== "Next"){
}
else if (event.getActionCommand()== "Prev"){
}
else if (event.getActionCommand()== "Last"){
}
else if (event.getActionCommand()== "First"){
}
} // end method actionPerformed
} // end private inner class ButtonHandler
private void showGUI() {
JLabel l;
JButton b;
fields = new JTextField[9];
JComboBox combo = new JComboBox();
for(int j = 0; j < product.length; j++)
combo.addItem(product[j].getName());
combo.addActionListener(this);
JFrame f = new JFrame("InventoryGUI");
Container cp = f.getContentPane();
cp.setLayout(new GridBagLayout());
cp.setBackground(UIManager.getColor("control"));
GridBagConstraints c = new GridBagConstraints();
c.gridx = 0;
c.gridy = GridBagConstraints.RELATIVE;
c.gridwidth = 1;
c.gridheight = 1;
c.insets = new Insets(2, 2, 2, 2);
c.anchor = GridBagConstraints.EAST;
cp.add(l = new JLabel("Item Number:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('a');
cp.add(l = new JLabel("Item Name:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('b');
cp.add(l = new JLabel("Number of Units in Stock:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('c');
cp.add(l = new JLabel("Price per Unit: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('d');
cp.add(l = new JLabel("Total cost of This Item: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('e');
cp.add(l = new JLabel("Total Value of All Merchandise in Inventory: $",
SwingConstants.CENTER), c); l.setDisplayedMnemonic('f');
cp.add(l = new JLabel("Item Code:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('g');
cp.add(l = new JLabel("Product Restocking Fee: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('h');
cp.add(combo, c);
c.gridx = 1;
c.gridy = 0;
c.weightx = 1.0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.CENTER;
cp.add(fields[0] = new JTextField(), c);
fields[0].setFocusAccelerator('a');
c.gridx = 1;
c.gridy = GridBagConstraints.RELATIVE;
cp.add(fields[1] = new JTextField(), c); fields[1].setFocusAccelerator('b');
cp.add(fields[2] = new JTextField(), c); fields[2].setFocusAccelerator('c');
cp.add(fields[3] = new JTextField(), c); fields[3].setFocusAccelerator('d');
cp.add(fields[4] = new JTextField(), c); fields[4].setFocusAccelerator('e');
cp.add(fields[5] = new JTextField(), c); fields[5].setFocusAccelerator('f');
cp.add(fields[6] = new JTextField(), c); fields[6].setFocusAccelerator('g');
cp.add(fields[7] = new JTextField(), c); fields[7].setFocusAccelerator('h');
cp.add(fields[8] = new JTextField(), c); fields[8].setFocusAccelerator('i');
c.weightx = 0.0;
c.fill = GridBagConstraints.NONE;
cp.add(b = new JButton("OK"), c);
cp.add(b = new JButton("First"),c);
cp.add(b = new JButton("Prev"),c);
cp.add(b = new JButton("Next"),c);
cp.add(b = new JButton("Last"),c);
b.setMnemonic('o');
f.pack();
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent evt)
{
System.exit(0);
}
});
f.setVisible(true);
}
private void populateFields(int index) {
CD cd = product[index];
fields[0].setText(Long.toString(cd.getNumberCode()));
fields[1].setText(cd.getName());
fields[2].setText(Long.toString(cd.getUnits()));
fields[3].setText(Double.toString(cd.getPrice()));
fields[4].setText(Double.toString(cd.getSum()));
fields[5].setText(Double.toString(cd.totalAllInventory(product)));
fields[6].setText(cd.getCode());
fields[7].setText(Double.toString(cd.getSum()*.05));
}
}
class CD {
int itemNumber;
String name;
int units;
double price;
String itemCode;
String command;
public CD(int n, String name, double price, int units, String itemCo) {
itemNumber = n;
this.name = name;
this.price = price;
this.units = units;
itemCode = itemCo;
}
public int getNumberCode() { return itemNumber; }
public String getName() { return name; }
public int getUnits() { return units; }
public double getPrice() { return price; }
public double getSum() { return units*price; }
public String getCode() { return itemCode; }
public String getActionnCommand() {return command; }
public double totalAllInventory(CD[] cds) {
double total = 0;
for(int j = 0; j < cds.length; j++)
total += cds[j].getSum();
return total;
}
}
public class InventoryI {
String productnumber;
String name;
int numberofunits;
double priceperunit;
String itemcode;
String command;
// Create a new instance of Inventory
// main constructor for the class
public InventoryI(String Item_Number, String Item_Name, int Items_in_Stock,
double Item_Price, String Item_Code) {
productnumber = Item_Number;
name = Item_Name;
numberofunits = Items_in_Stock;
priceperunit = Item_Price;
itemcode = Item_Code;
}
public void setItemName(String Item_Name) {
// sets the items name
name = Item_Name;
}
public void setItemCode(String Item_Code) {
// sets the items name
itemcode = Item_Code;
}
public void setItemNumber(String Item_Number) { // Sets the Product =Number
// for the item
productnumber = Item_Number;
}
public void setItemsInStock(int Items_in_Stock) { // sets the =number of
// units in stock
numberofunits = Items_in_Stock;
}
public void setItemPrice(double Item_Price) { // sets the price of =the
// item
priceperunit = Item_Price;
}
public String getItemName() { // returns the Product Name of this item
return name;
}
public String getItemCode() { // returns the Product Name of this item
return itemcode;
}
public String getItemNumber() { // returns the Product Number of the =item
return productnumber;
}
public int getItemsInStock() { // returns how many units are in stock
return numberofunits;
}
public double getItemPrice() { // returns the price of the item
return priceperunit;
}
public double getInventoryIValue() { // returns the total value of =the stock
// for this item
return priceperunit * numberofunits;
}
public static double getTotalValueOfAllInventory(InventoryI [] inv) {
double tot = 0.0;
for(int i = 0; i < inv.length; i++)
tot += inv[i].getInventoryIValue();
return tot;
}
public static InventoryI[] sort(InventoryI [] inventory)
{
InventoryI temp[] = new InventoryI[1];
//sorting the array using Bubble Sort
for(int j = 0; j < inventory.length - 1; j++)
{
for(int k = 0; k < inventory.length - 1; k++)
{
if(inventory[k].getItemName().compareToIgnoreCase(inventory[k+1].getItemName()) > 0)
{
temp[0] = inventory[k];
inventory[k] = inventory[k+1];
inventory[k+1] = temp[0];
}//end if
}//end for loop
}//end for loop
return inventory;
}
public String toString()
{
StringBuffer sb = new StringBuffer();
sb.append("CD Title: \t").append(name).append("\n");
sb.append("Item Code: \t").append(itemcode).append("\n");
sb.append("Item #: \t").append(productnumber).append("\n");
sb.append("Number in stock:\t").append(numberofunits).append("\n");
sb.append("Price: \t").append(String.format("$%.2f%n", priceperunit));
sb.append("Inventory Value:\t").append(String.format("$%.2f%n", this.getInventoryIValue()));
return sb.toString();
}
} •
•
Join Date: May 2007
Location: USA
Posts: 2,599
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Solved Threads: 257
b = new JButton("First"); // first button
b.addActionListener(this);
b = new JButton("Previous"); // previous button
b.addActionListener(this);
b = new JButton("Next"); // next button
b.addActionListener(this); Last edited by Ezzaral : Sep 6th, 2007 at 5:18 pm.
•
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Join Date: Mar 2007
Posts: 25
Reputation:
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Light Poster
Ok, I changes it so the action listener is added to the buttons that are being added to the panel annd still nothing. by the way, i want to thank you for all your help and advice, they are much appreciated.
import java.awt.*;
import java.awt.event.*;
import java.text.NumberFormat; // used to format currency
import javax.swing.*;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
class InventoryMain extends Frame implements ActionListener
{
CD[] product;
JTextField[] fields;
NumberFormat nf;
JButton b;
public void actionPerformed(ActionEvent e)
{
int index = ((JComboBox)e.getSource()).getSelectedIndex();
populateFields(index);
}
// inner class for button event handling
private class ButtonHandler implements ActionListener
{
// handle button event
public void actionPerformed( ActionEvent event )
{
System.out.println(event.getActionCommand());
// See which button was pressed
if (event.getActionCommand()== "Next"){
}
else if (event.getActionCommand()== "Prev"){
}
else if (event.getActionCommand()== "Last"){
}
else if (event.getActionCommand()== "First"){
}
} // end method actionPerformed
} // end private inner class ButtonHandler
public static void main(String[] args)
{
try
{
UIManager.setLookAndFeel(
"com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
}
catch (Exception e)
{
System.err.println(e.getClass().getName() + ": " + e.getMessage());
}
InventoryMain test = new InventoryMain();
test.initCD();
test.showGUI();
test.populateFields(0);
}
/**
*
*/
public void initCD() {
//Create an array
product = new CD[10];
//fill in the classes
product[0] = new CD( 1, "Crowbar" , 20.00, 10, "00722");
product[1] = new CD( 2, "Pantera" , 20.00, 10, "00263");
product[2] = new CD( 3, "Ozzy" , 15.00, 10, "00142");
product[3] = new CD( 4, "Soulfly" , 18.00, 10, "00553");
product[4] = new CD( 5, "Down", 24.00, 10, "00789");
product[5] = new CD( 6, "God Forbid" , 10.00, 10, "00712");
product[6] = new CD( 7, "Black Label Society" , 16.00, 10, "00458" );
product[7] = new CD( 8, "Saint Vitus" , 15.00, 10, "00889");
product[8] = new CD( 9, "Clearlight" , 15.00, 10, "00897");
product[9] = new CD( 10, "Testament" , 15.00, 10, "00656");
//Sort elements in array in alphabetical order by product name
// product[0].sortItems(product);
b = new JButton("First"); // first button
b = new JButton("Previous"); // previous button
b = new JButton("Next"); // next button
b = new JButton("Last"); // last button
}
private void showGUI() {
JLabel l;
JButton b;
fields = new JTextField[9];
JComboBox combo = new JComboBox();
for(int j = 0; j < product.length; j++)
combo.addItem(product[j].getName());
JFrame f = new JFrame("InventoryGUI");
Container cp = f.getContentPane();
cp.setLayout(new GridBagLayout());
cp.setBackground(UIManager.getColor("control"));
GridBagConstraints c = new GridBagConstraints();
c.gridx = 0;
c.gridy = GridBagConstraints.RELATIVE;
c.gridwidth = 1;
c.gridheight = 1;
c.insets = new Insets(2, 2, 2, 2);
c.anchor = GridBagConstraints.EAST;
cp.add(l = new JLabel("Item Number:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('a');
cp.add(l = new JLabel("Item Name:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('b');
cp.add(l = new JLabel("Number of Units in Stock:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('c');
cp.add(l = new JLabel("Price per Unit: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('d');
cp.add(l = new JLabel("Total cost of This Item: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('e');
cp.add(l = new JLabel("Total Value of All Merchandise in Inventory: $",
SwingConstants.CENTER), c); l.setDisplayedMnemonic('f');
cp.add(l = new JLabel("Item Code:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('g');
cp.add(l = new JLabel("Product Restocking Fee: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('h');
cp.add(combo, c);
c.gridx = 1;
c.gridy = 0;
c.weightx = 1.0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.CENTER;
cp.add(fields[0] = new JTextField(), c);
fields[0].setFocusAccelerator('a');
c.gridx = 1;
c.gridy = GridBagConstraints.RELATIVE;
cp.add(fields[1] = new JTextField(), c); fields[1].setFocusAccelerator('b');
cp.add(fields[2] = new JTextField(), c); fields[2].setFocusAccelerator('c');
cp.add(fields[3] = new JTextField(), c); fields[3].setFocusAccelerator('d');
cp.add(fields[4] = new JTextField(), c); fields[4].setFocusAccelerator('e');
cp.add(fields[5] = new JTextField(), c); fields[5].setFocusAccelerator('f');
cp.add(fields[6] = new JTextField(), c); fields[6].setFocusAccelerator('g');
cp.add(fields[7] = new JTextField(), c); fields[7].setFocusAccelerator('h');
cp.add(fields[8] = new JTextField(), c); fields[8].setFocusAccelerator('i');
c.weightx = 0.0;
c.fill = GridBagConstraints.NONE;
cp.add(b = new JButton("OK"), c);
b.addActionListener(this);
cp.add(b = new JButton("First"),c);
b.addActionListener(this);
cp.add(b = new JButton("Prev"),c);
b.addActionListener(this);
cp.add(b = new JButton("Next"),c);
b.addActionListener(this);
cp.add(b = new JButton("Last"),c);
b.addActionListener(this);
b.setMnemonic('o');
f.pack();
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent evt)
{
System.exit(0);
}
});
f.setVisible(true);
}
private void populateFields(int index) {
CD cd = product[index];
fields[0].setText(Long.toString(cd.getNumberCode()));
fields[1].setText(cd.getName());
fields[2].setText(Long.toString(cd.getUnits()));
fields[3].setText(Double.toString(cd.getPrice()));
fields[4].setText(Double.toString(cd.getSum()));
fields[5].setText(Double.toString(cd.totalAllInventory(product)));
fields[6].setText(cd.getCode());
fields[7].setText(Double.toString(cd.getSum()*.05));
}
}
class CD {
int itemNumber;
String name;
int units;
double price;
String itemCode;
String command;
public CD(int n, String name, double price, int units, String itemCo) {
itemNumber = n;
this.name = name;
this.price = price;
this.units = units;
itemCode = itemCo;
}
public int getNumberCode() { return itemNumber; }
public String getName() { return name; }
public int getUnits() { return units; }
public double getPrice() { return price; }
public double getSum() { return units*price; }
public String getCode() { return itemCode; }
public String getActionnCommand() {return command; }
public double totalAllInventory(CD[] cds) {
double total = 0;
for(int j = 0; j < cds.length; j++)
total += cds[j].getSum();
return total;
}
}
public class InventoryI {
String productnumber;
String name;
int numberofunits;
double priceperunit;
String itemcode;
String command;
// Create a new instance of Inventory
// main constructor for the class
public InventoryI(String Item_Number, String Item_Name, int Items_in_Stock,
double Item_Price, String Item_Code) {
productnumber = Item_Number;
name = Item_Name;
numberofunits = Items_in_Stock;
priceperunit = Item_Price;
itemcode = Item_Code;
}
public void setItemName(String Item_Name) {
// sets the items name
name = Item_Name;
}
public void setItemCode(String Item_Code) {
// sets the items name
itemcode = Item_Code;
}
public void setItemNumber(String Item_Number) { // Sets the Product =Number
// for the item
productnumber = Item_Number;
}
public void setItemsInStock(int Items_in_Stock) { // sets the =number of
// units in stock
numberofunits = Items_in_Stock;
}
public void setItemPrice(double Item_Price) { // sets the price of =the
// item
priceperunit = Item_Price;
}
public String getItemName() { // returns the Product Name of this item
return name;
}
public String getItemCode() { // returns the Product Name of this item
return itemcode;
}
public String getItemNumber() { // returns the Product Number of the =item
return productnumber;
}
public int getItemsInStock() { // returns how many units are in stock
return numberofunits;
}
public double getItemPrice() { // returns the price of the item
return priceperunit;
}
public double getInventoryIValue() { // returns the total value of =the stock
// for this item
return priceperunit * numberofunits;
}
public static double getTotalValueOfAllInventory(InventoryI [] inv) {
double tot = 0.0;
for(int i = 0; i < inv.length; i++)
tot += inv[i].getInventoryIValue();
return tot;
}
public static InventoryI[] sort(InventoryI [] inventory)
{
InventoryI temp[] = new InventoryI[1];
//sorting the array using Bubble Sort
for(int j = 0; j < inventory.length - 1; j++)
{
for(int k = 0; k < inventory.length - 1; k++)
{
if(inventory[k].getItemName().compareToIgnoreCase(inventory[k+1].getItemName()) > 0)
{
temp[0] = inventory[k];
inventory[k] = inventory[k+1];
inventory[k+1] = temp[0];
}//end if
}//end for loop
}//end for loop
return inventory;
}
public String toString()
{
StringBuffer sb = new StringBuffer();
sb.append("CD Title: \t").append(name).append("\n");
sb.append("Item Code: \t").append(itemcode).append("\n");
sb.append("Item #: \t").append(productnumber).append("\n");
sb.append("Number in stock:\t").append(numberofunits).append("\n");
sb.append("Price: \t").append(String.format("$%.2f%n", priceperunit));
sb.append("Inventory Value:\t").append(String.format("$%.2f%n", this.getInventoryIValue()));
return sb.toString();
}
} •
•
Join Date: Dec 2004
Location: London or Slovakia
Posts: 2,137
Reputation:
Rep Power: 10
Solved Threads: 257
To be fair this program is in mess you should organize it little, good thing is you willing to work on it.
Bellow are some uptades for you, check the red marked parts.
PS: Can you please next time put each java file is separated code tags? Thanx
Bellow are some uptades for you, check the red marked parts.
PS: Can you please next time put each java file is separated code tags? Thanx
import java.awt.*;
import java.awt.event.*;
import java.text.NumberFormat; // used to format currency
import javax.swing.*;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
class InventoryMain extends Frame implements ActionListener
{
CD[] product;
JTextField[] fields;
NumberFormat nf;
JButton jbtOk, jbtFirst, jbtPrev, jbtNext, jbtLast;
public static void main(String[] args)
{
try
{
UIManager.setLookAndFeel(
"com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
}
catch (Exception e)
{
System.err.println(e.getClass().getName() + ": " + e.getMessage());
}
InventoryMain test = new InventoryMain();
test.initCD();
test.showGUI();
test.populateFields(0);
}
/* DOESN'T DO ANYTHING
public void actionPerformed(ActionEvent e)
{
int index = ((JComboBox)e.getSource()).getSelectedIndex();
populateFields(index);
}
// inner class for button event handling
private class ButtonHandler implements ActionListener
{
// handle button event
public void actionPerformed( ActionEvent event )
{
System.out.println(event.getActionCommand());
// See which button was pressed
if (event.getActionCommand()== "Next"){
}
else if (event.getActionCommand()== "Prev"){
}
else if (event.getActionCommand()== "Last"){
}
else if (event.getActionCommand()== "First"){
}
} // end method actionPerformed
} // end private inner class ButtonHandler*/
public void actionPerformed(ActionEvent ae)
{
if(ae.getSource() == jbtOk)
{
// add OK button functionality
System.out.println("OK pressed");
}
if(ae.getSource() == jbtFirst)
{
// add First button functionality
System.out.println("FIRST pressed");
}
if(ae.getSource() == jbtPrev)
{
// add Previous button functionality
System.out.println("PREVIOUS pressed");
}
if(ae.getSource() == jbtNext)
{
// add Next button functionality
System.out.println("NEXT pressed");
}
if(ae.getSource() == jbtLast)
{
// add Last button functionality
System.out.println("LAST pressed");
}
}
public void initCD()
{
//Create an array
product = new CD[10];
//fill in the classes
product[0] = new CD( 1, "Crowbar" , 20.00, 10, "00722");
product[1] = new CD( 2, "Pantera" , 20.00, 10, "00263");
product[2] = new CD( 3, "Ozzy" , 15.00, 10, "00142");
product[3] = new CD( 4, "Soulfly" , 18.00, 10, "00553");
product[4] = new CD( 5, "Down", 24.00, 10, "00789");
product[5] = new CD( 6, "God Forbid" , 10.00, 10, "00712");
product[6] = new CD( 7, "Black Label Society" , 16.00, 10, "00458" );
product[7] = new CD( 8, "Saint Vitus" , 15.00, 10, "00889");
product[8] = new CD( 9, "Clearlight" , 15.00, 10, "00897");
product[9] = new CD( 10, "Testament" , 15.00, 10, "00656");
//Sort elements in array in alphabetical order by product name
// product[0].sortItems(product);
/* WHAT IS THIS FOR ? ? ?
b = new JButton("First"); // first button
b = new JButton("Previous"); // previous button
b = new JButton("Next"); // next button
b = new JButton("Last"); // last button */
}
private void showGUI()
{
JLabel l;
/* ONE BUTTON DOESN'T DO FOR ALL ! ! !
ALSO THIS IS SECOND DECLARATION OF THE BUTTON, ONE ON THE START
JButton b;*/
fields = new JTextField[9];
JComboBox combo = new JComboBox();
for(int j = 0; j < product.length; j++)
combo.addItem(product[j].getName());
JFrame f = new JFrame("InventoryGUI");
Container cp = f.getContentPane();
cp.setLayout(new GridBagLayout());
cp.setBackground(UIManager.getColor("control"));
GridBagConstraints c = new GridBagConstraints();
c.gridx = 0;
c.gridy = GridBagConstraints.RELATIVE;
c.gridwidth = 1;
c.gridheight = 1;
c.insets = new Insets(2, 2, 2, 2);
c.anchor = GridBagConstraints.EAST;
cp.add(l = new JLabel("Item Number:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('a');
cp.add(l = new JLabel("Item Name:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('b');
cp.add(l = new JLabel("Number of Units in Stock:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('c');
cp.add(l = new JLabel("Price per Unit: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('d');
cp.add(l = new JLabel("Total cost of This Item: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('e');
cp.add(l = new JLabel("Total Value of All Merchandise in Inventory: $",
SwingConstants.CENTER), c); l.setDisplayedMnemonic('f');
cp.add(l = new JLabel("Item Code:", SwingConstants.CENTER), c); l.setDisplayedMnemonic('g');
cp.add(l = new JLabel("Product Restocking Fee: $", SwingConstants.CENTER), c); l.setDisplayedMnemonic('h');
cp.add(combo, c);
c.gridx = 1;
c.gridy = 0;
c.weightx = 1.0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.CENTER;
cp.add(fields[0] = new JTextField(), c);
fields[0].setFocusAccelerator('a');
c.gridx = 1;
c.gridy = GridBagConstraints.RELATIVE;
cp.add(fields[1] = new JTextField(), c); fields[1].setFocusAccelerator('b');
cp.add(fields[2] = new JTextField(), c); fields[2].setFocusAccelerator('c');
cp.add(fields[3] = new JTextField(), c); fields[3].setFocusAccelerator('d');
cp.add(fields[4] = new JTextField(), c); fields[4].setFocusAccelerator('e');
cp.add(fields[5] = new JTextField(), c); fields[5].setFocusAccelerator('f');
cp.add(fields[6] = new JTextField(), c); fields[6].setFocusAccelerator('g');
cp.add(fields[7] = new JTextField(), c); fields[7].setFocusAccelerator('h');
cp.add(fields[8] = new JTextField(), c); fields[8].setFocusAccelerator('i');
c.weightx = 0.0;
c.fill = GridBagConstraints.NONE;
jbtOk = new JButton("OK");
jbtOk.addActionListener(this);
jbtFirst = new JButton("First");
jbtFirst.addActionListener(this);
jbtPrev = new JButton("Previous");
jbtPrev.addActionListener(this);
jbtNext = new JButton("Next");
jbtNext.addActionListener(this);
jbtLast = new JButton("Last");
jbtLast.addActionListener(this);
cp.add(jbtOk, c);
cp.add(jbtFirst, c);
cp.add(jbtPrev, c);
cp.add(jbtNext, c);
cp.add(jbtLast, c);
/* INTERESTING SHORTCUT BUT YOU OVERWRITING YOUR BUTTON b
THAT IS ONE OF THE REASONS WHY NOTHING IS WORKING FOR YOU ! ! !
cp.add(b = new JButton("OK"), c);
b.addActionListener(this);
cp.add(b = new JButton("First"),c);
b.addActionListener(this);
cp.add(b = new JButton("Prev"),c);
b.addActionListener(this);
cp.add(b = new JButton("Next"),c);
b.addActionListener(this);
cp.add(b = new JButton("Last"),c);
b.addActionListener(this);*/
/* ASIGN MNEMONIC TO WHICH OF THE BUTTONS ? ? ?
b.setMnemonic('o');*/
f.pack();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
/* ABOVE IS SIMPLER SOLUTION
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent evt)
{
System.exit(0);
}
});*/
f.setVisible(true);
}
private void populateFields(int index) {
CD cd = product[index];
fields[0].setText(Long.toString(cd.getNumberCode()));
fields[1].setText(cd.getName());
fields[2].setText(Long.toString(cd.getUnits()));
fields[3].setText(Double.toString(cd.getPrice()));
fields[4].setText(Double.toString(cd.getSum()));
fields[5].setText(Double.toString(cd.totalAllInventory(product)));
fields[6].setText(cd.getCode());
fields[7].setText(Double.toString(cd.getSum()*.05));
}
}