Help Needed on this ASAP!
need urgent solution to this ASAP...thanks kind hearted fellows
build an online quiz/questionaire wherein the user tests his knowledge base by
solving a number of questions.the question will be of multiple choice type such that
there is only one timer to monitor the time taken by the user, which will also
automatically redirect the user to the next question if the time limit for each
question is exceeded.the questions for the quiz along with the answers for the quiz
would be typically stored in a database and would be accessed one at a time by the
application.At the end of the quiz ,the score is to be calculated based on the
performance of the user and is to be displayed.
*The core software to be used for the development will be based on the Java 2
platform and its APIs.
*The approach towards solving the problem must be object oriented.
*Data for the quiz must exist in an external data source and must be retreived using
DBMS suc as SQL server.(i.e JDBC API)
*Multithreading features can be used to implement the timer.
It looks like someone put off doing his project, then when he looked at it had no friggin idea where to even start. I mean, this looks like an interesting project. I wonder what level course it's for.
ps I'll do it for only $125 an hour, plus expenses.
SE*
Similar Messages
-
Help needed with this form in DW
Hi, i have created this form in dreamweaver but ive got this problem.
In the fields above the text field, the client needs to fill in some info such as name, email telephone number etc.
But the problem is when ill get the messages. Only the text from the large text field is there.
What did i do wrong??
http://www.hureninparamaribo.nl/contact.html
Thank you
Anybody??Thank you for your response. So what do i have to do to fix this?
Date: Sun, 20 Jan 2013 07:57:56 -0700
From: [email protected]
To: [email protected]
Subject: Help needed with this form in DW
Re: Help needed with this form in DW
created by Ken Binney in Dreamweaver General - View the full discussion
You have several duplicate "name" attributes in these rows which also appears in the first row
Telefoon:
Huurperiode:
Aantal personen:
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Hi guys, I need help in debugging this code I made, which is a GUI minesweeper. Its extremely buggy...I particularly need help fixing the actionListener part of the code as everytime I press a button on the GUI, an exception occurs.
help please!
package minesweeperGUI;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MinesweeperGUI implements ActionListener
//Declaration of attributes
static int length = 0;
JMenuItem menuItemNew = new JMenuItem();
JRadioButtonMenuItem rbEasy = new JRadioButtonMenuItem();
JRadioButtonMenuItem rbHard = new JRadioButtonMenuItem();
JMenuItem menuItemExit = new JMenuItem();
JButton buttonReset = new JButton();
JButton buttonGrid[][] = null;
JFrame frame = new JFrame();
int getBombsTotal = 0;
JLabel setBombsLabel = new JLabel();
int a = 0;
int b = 0;
//No constructor created. Uses default constructor
//Create the menu bar
public JMenuBar newMenuBar()
//Sets up the menubar
JMenuBar menuBar = new JMenuBar();
//Sets up the Game menu with choice of new, grid size, and exit
JMenu menu = new JMenu ("Game");
menuBar.add (menu);
menuItemNew = new JMenuItem ("New");
menuItemNew.addActionListener (this);
menu.add (menuItemNew);
menu.addSeparator();
//Sets up sub-menu for grid size with choice of easy and hard radio buttons
JMenu subMenu = new JMenu ("Grid Size");
rbEasy = new JRadioButtonMenuItem ("Easy: 5x5 grid");
rbEasy.addActionListener (this);
subMenu.add (rbEasy);
rbHard = new JRadioButtonMenuItem ("Hard: 10x10 grid");
rbHard.addActionListener (this);
subMenu.add (rbHard);
menu.add (subMenu);
menu.addSeparator();
menuItemExit = new JMenuItem ("Exit");
menuItemExit.addActionListener (this);
menu.add (menuItemExit);
return menuBar;
//Setting up of Bomb Grid
public int [][] setGrid (int length)
int grid[][] = null;
grid = new int[length][length];
for (int i = 0; i < length; i++)
for (int j = 0; j < length; j++)
grid[i][j] = ((int)Math.round(Math.random() * 10))% 2;
return grid;
//Setting up of the of the graphical bomb grid
public JButton[][] setButtonGrid (int length)
JButton buttonGrid[][] = null;
buttonGrid = new JButton[length][length];
for (int i = 0; i < length; i++)
for (int j = 0; j < length; j++)
buttonGrid[i][j] = new JButton();
return buttonGrid;
//Setting up of a way to count the total number of bombs in the bomb grid
public int getBombsTotal (int length, int setGrid[][])
int bombsTotal = 0;
for (int i = 0; i < length; i++)
for (int j = 0; j < length; j++)
if (setGrid[i][j] == 1)
bombsTotal += 1;
return bombsTotal;
//Create a label for number of bombs left
public JLabel setBombsLabel (int getBombsTotal)
JLabel bombsLabel = new JLabel(String.valueOf (getBombsTotal) + " Bombs Left");
return bombsLabel;
//Setting up a way to count the number of bombs around a button
public String setBombs (int length, int setGrid[][], int x, int y)
int bombs[][] = new int[length][length];
String bombsString = null;
for (int i = 0; i < length; i++)
for (int j = 0; j < length; j++)
if (i == 0 && j == 0)
bombs[i][j] = setGrid[i][j+1] + setGrid[i+1][j] +
setGrid[i+1][j+1];
else if (i ==0 && j == (length - 1))
bombs[i][j] = setGrid[i][j-1] + setGrid[i+1][j-1] +
setGrid[i+1][j];
else if (i == (length - 1) && j == 0)
bombs[i][j] = setGrid[i-1][j] + setGrid[i-1][j+1] +
setGrid[i][j+1];
else if (i == (length - 1) && j == (length - 1))
bombs[i][j] = setGrid[i-1][j-1] + setGrid[i-1][j] +
setGrid[i][j-1];
else if (i == 0 && j != 0 && j != (length - 1))
bombs[i][j] = setGrid[i][j-1] + setGrid[i][j+1] +
setGrid[i+1][j-1] + setGrid[i+1][j] +
setGrid[i+1][j+1];
else if (i == (length - 1) && j != 0 && j != (length - 1))
bombs[i][j] = setGrid[i-1][j-1] + setGrid[i-1][j] +
setGrid[i-1][j+1] + setGrid[i][j-1] +
setGrid[i][j+1];
else if (i != 0 && i != (length - 1) && j == 0)
bombs[i][j] = setGrid[i-1][j] + setGrid[i-1][j+1] +
setGrid[i][j+1] + setGrid[i+1][j] +
setGrid[i+1][j+1];
else if (i != 0 && i != (length - 1) && j == (length - 1))
bombs[i][j] = setGrid[i-1][j-1] + setGrid[i-1][j] +
setGrid[i][j-1] + setGrid[i+1][j-1] +
setGrid[i+1][j];
else
bombs[i][j] = setGrid[i-1][j-1] + setGrid[i-1][j] +
setGrid[i-1][j+1] + setGrid[i][j-1] +
setGrid[i][j+1] + setGrid[i+1][j-1] +
setGrid[i+1][j] + setGrid[i+1][j+1];
bombsString = String.valueOf (bombs[x][y]);
return bombsString;
//create the panel for the bombs label and reset button
public JPanel newTopPanel(int length)
int setGridNew [][] = null;
setGridNew = new int[length][length];
int getBombsTotalNew = 0;
JLabel setBombsLabelNew = new JLabel();
setGridNew = setGrid (length);
getBombsTotalNew = getBombsTotal (length, setGridNew);
setBombsLabelNew = setBombsLabel (getBombsTotalNew);
JPanel topPanel = new JPanel ();
topPanel.setLayout (new BorderLayout (50,50));
JLabel bombsLabel = new JLabel ();
bombsLabel = setBombsLabelNew;
topPanel.add (bombsLabel, BorderLayout.WEST);
buttonReset = new JButton("Reset");
buttonReset.addActionListener (this);
topPanel.add (buttonReset, BorderLayout.CENTER);
return topPanel;
//create the panel for the play grids
public JPanel newBottomPanel(int length)
JButton setButtonGridNew[][] = null;
setButtonGridNew = new JButton [length][length];
setButtonGridNew = setButtonGrid (length);
JPanel bottomPanel = new JPanel ();
bottomPanel.setLayout (new GridLayout (length, length));
buttonGrid = new JButton[length][length];
for (a = 0; a < length; a++)
for (b = 0; b < length; b++)
buttonGrid[a] = setButtonGridNew[a][b];
buttonGrid[a][b].addActionListener (this);
bottomPanel.add (buttonGrid[a][b]);
return bottomPanel;
//Overiding of abstract method actionPerformed
public void actionPerformed(ActionEvent e)
if (e.getSource() == menuItemNew)
launchFrame(length);
else if (e.getSource() == menuItemExit)
frame.setVisible (false);
System.exit(0);
else if (e.getSource() == rbEasy)
length = 5;
launchFrame(length);
else if (e.getSource() == rbHard)
length = 10;
launchFrame(length);
else if (e.getSource() == buttonReset)
launchFrame(length);
else if (e.getSource() == buttonGrid[a][b])
int setGridNew [][] = null;
setGridNew = new int[length][length];
JButton bombButton [][] = null;
bombButton = new JButton [length][length];
String bombString [][] = null;
bombString = new String[length][length];
setGridNew = setGrid (length);
bombString[a][b] = setBombs (length, setGridNew, a, b);
bombButton[a][b] = new JButton (bombString[a][b]);
if (setGridNew[a][b] == 0)
buttonGrid[a][b] = bombButton[a][b];
getBombsTotal--;
JLabel setBombsLabelNew = new JLabel();
setBombsLabelNew = setBombsLabel (getBombsTotal);
else if (setGridNew[a][b] == 1 )
buttonGrid[a][b] = new JButton("x");
JOptionPane.showMessageDialog (null, "Game Over. You hit a Bomb!");
System.exit(0);
//create the content pane
public Container newContentPane(int length)
JPanel topPanel = new JPanel();
JPanel bottomPanel = new JPanel();
topPanel = newTopPanel(length);
bottomPanel = newBottomPanel (length);
JPanel contentPane = new JPanel();
contentPane.setOpaque (true);
contentPane.setLayout (new BorderLayout(50,50));
contentPane.add (topPanel, BorderLayout.NORTH);
contentPane.add (bottomPanel, BorderLayout.CENTER);
return contentPane;
public void launchFrame (int length)
//Makes sure we have nice window decorations
JFrame.setDefaultLookAndFeelDecorated(true);
//Sets up the top-level window
frame = new JFrame ("Minesweeper");
//Exits program when the closed button is clicked
frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
JMenuBar menuBar = new JMenuBar();
Container contentPane = new Container();
menuBar = newMenuBar();
contentPane = newContentPane (length);
//Sets up the menu bar and content pane
frame.setJMenuBar (menuBar);
frame.setContentPane (contentPane);
//Displays the window
frame.pack();
frame.setVisible (true);
public static void main (String args[])
//Default length is 5
length = 5;
MinesweeperGUI minesweeper = new MinesweeperGUI();
minesweeper.launchFrame(length);hi, thanks. that removed the exception; although now the buttons action listener won't work :(
here is the revised code:
To anyone out there, can you guys run this code and help me debug it?
I'm really desperate as this is a school project of mine and the deadline is 7 hours away. I have already been working on it for 3 days, but the program is still very buggy.
thanks!
/* Oliver Ian C. Wee 04-80112
* CS12 MHRU
* Machine Problem 2
package minesweeperGUI;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MinesweeperGUI implements ActionListener
//Declaration of attributes
static int length = 0;
JMenuItem menuItemNew = new JMenuItem();
JRadioButtonMenuItem rbEasy = new JRadioButtonMenuItem();
JRadioButtonMenuItem rbHard = new JRadioButtonMenuItem();
JMenuItem menuItemExit = new JMenuItem();
JButton buttonReset = new JButton();
JButton buttonGrid[][] = null;
JFrame frame = new JFrame();
int getBombsTotal = 0;
JLabel setBombsLabel = new JLabel();
int a = 0;
int b = 0;
//No constructor created. Uses default constructor
//Create the menu bar
public JMenuBar newMenuBar()
//Sets up the menubar
JMenuBar menuBar = new JMenuBar();
//Sets up the Game menu with choice of new, grid size, and exit
JMenu menu = new JMenu ("Game");
menuBar.add (menu);
menuItemNew = new JMenuItem ("New");
menuItemNew.addActionListener (this);
menu.add (menuItemNew);
menu.addSeparator();
//Sets up sub-menu for grid size with choice of easy and hard radio buttons
JMenu subMenu = new JMenu ("Grid Size");
ButtonGroup bg = new ButtonGroup();
rbEasy = new JRadioButtonMenuItem ("Easy: 5x5 grid");
bg.add (rbEasy);
rbEasy.addActionListener (this);
subMenu.add (rbEasy);
rbHard = new JRadioButtonMenuItem ("Hard: 10x10 grid");
bg.add (rbHard);
rbHard.addActionListener (this);
subMenu.add (rbHard);
menu.add (subMenu);
menu.addSeparator();
menuItemExit = new JMenuItem ("Exit");
menuItemExit.addActionListener (this);
menu.add (menuItemExit);
return menuBar;
//Setting up of Bomb Grid
public int [][] setGrid (int length)
int grid[][] = null;
grid = new int[length][length];
for (int i = 0; i < length; i++)
for (int j = 0; j < length; j++)
grid[i][j] = ((int)Math.round(Math.random() * 10))% 2;
return grid;
//Setting up of the of the graphical bomb grid
public JButton[][] setButtonGrid (int length)
JButton buttonGrid[][] = null;
buttonGrid = new JButton[length][length];
for (int i = 0; i < length; i++)
for (int j = 0; j < length; j++)
buttonGrid[i][j] = new JButton();
return buttonGrid;
//Setting up of a way to count the total number of bombs in the bomb grid
public int getBombsTotal (int length, int setGrid[][])
int bombsTotal = 0;
for (int i = 0; i < length; i++)
for (int j = 0; j < length; j++)
if (setGrid[i][j] == 1)
bombsTotal += 1;
return bombsTotal;
//Create a label for number of bombs left
public JLabel setBombsLabel (int getBombsTotal)
JLabel bombsLabel = new JLabel(" " +String.valueOf (getBombsTotal) + " Bombs Left");
return bombsLabel;
//Setting up a way to count the number of bombs around a button
public String setBombs (int length, int setGrid[][], int x, int y)
int bombs[][] = new int[length][length];
String bombsString = null;
for (int i = 0; i < length; i++)
for (int j = 0; j < length; j++)
if (i == 0 && j == 0)
bombs[i][j] = setGrid[i][j+1] + setGrid[i+1][j] +
setGrid[i+1][j+1];
else if (i ==0 && j == (length - 1))
bombs[i][j] = setGrid[i][j-1] + setGrid[i+1][j-1] +
setGrid[i+1][j];
else if (i == (length - 1) && j == 0)
bombs[i][j] = setGrid[i-1][j] + setGrid[i-1][j+1] +
setGrid[i][j+1];
else if (i == (length - 1) && j == (length - 1))
bombs[i][j] = setGrid[i-1][j-1] + setGrid[i-1][j] +
setGrid[i][j-1];
else if (i == 0 && j != 0 && j != (length - 1))
bombs[i][j] = setGrid[i][j-1] + setGrid[i][j+1] +
setGrid[i+1][j-1] + setGrid[i+1][j] +
setGrid[i+1][j+1];
else if (i == (length - 1) && j != 0 && j != (length - 1))
bombs[i][j] = setGrid[i-1][j-1] + setGrid[i-1][j] +
setGrid[i-1][j+1] + setGrid[i][j-1] +
setGrid[i][j+1];
else if (i != 0 && i != (length - 1) && j == 0)
bombs[i][j] = setGrid[i-1][j] + setGrid[i-1][j+1] +
setGrid[i][j+1] + setGrid[i+1][j] +
setGrid[i+1][j+1];
else if (i != 0 && i != (length - 1) && j == (length - 1))
bombs[i][j] = setGrid[i-1][j-1] + setGrid[i-1][j] +
setGrid[i][j-1] + setGrid[i+1][j-1] +
setGrid[i+1][j];
else
bombs[i][j] = setGrid[i-1][j-1] + setGrid[i-1][j] +
setGrid[i-1][j+1] + setGrid[i][j-1] +
setGrid[i][j+1] + setGrid[i+1][j-1] +
setGrid[i+1][j] + setGrid[i+1][j+1];
bombsString = String.valueOf (bombs[x][y]);
return bombsString;
//create the panel for the bombs label and reset button
public JPanel newTopPanel(int length)
int setGridNew [][] = null;
setGridNew = new int[length][length];
int getBombsTotalNew = 0;
JLabel setBombsLabelNew = new JLabel();
setGridNew = setGrid (length);
getBombsTotalNew = getBombsTotal (length, setGridNew);
setBombsLabelNew = setBombsLabel (getBombsTotalNew);
JPanel topPanel = new JPanel ();
topPanel.setLayout (new BorderLayout (20,20));
JLabel bombsLabel = new JLabel ();
bombsLabel = setBombsLabelNew;
topPanel.add (bombsLabel, BorderLayout.WEST);
buttonReset = new JButton("Reset");
buttonReset.addActionListener (this);
topPanel.add (buttonReset, BorderLayout.CENTER);
return topPanel;
//create the panel for the play grids
public JPanel newBottomPanel(int length)
JButton setButtonGridNew[][] = null;
setButtonGridNew = new JButton [length][length];
setButtonGridNew = setButtonGrid (length);
JPanel bottomPanel = new JPanel ();
bottomPanel.setLayout (new GridLayout (length, length));
buttonGrid = new JButton[length][length];
for (int i = 0; i < length; i++)
for (int j = 0; j < length; j++)
buttonGrid[i][j] = setButtonGridNew[i][j];
buttonGrid[i][j].addActionListener (this);
bottomPanel.add (buttonGrid[i][j]);
return bottomPanel;
//Overiding of abstract method actionPerformed
public void actionPerformed(ActionEvent e)
if (e.getSource() == menuItemNew)
closeFrame();
launchFrame(length);
else if (e.getSource() == menuItemExit)
frame.setVisible (false);
System.exit(0);
else if (e.getSource() == rbEasy)
closeFrame();
length = 5;
launchFrame(length);
else if (e.getSource() == rbHard)
closeFrame();
length = 10;
launchFrame(length);
else if (e.getSource() == buttonReset)
closeFrame();
launchFrame(length);
else if (e.getSource() == buttonGrid[a])
int setGridNew [][] = null;
setGridNew = new int[length][length];
JButton bombButton [][] = null;
bombButton = new JButton [length][length];
String bombString [][] = null;
bombString = new String[length][length];
setGridNew = setGrid (length);
for (int i = 0; i < length; i++)
for (int j = 0; j < length; j++)
bombString[i][j] = setBombs (length, setGridNew, i, j);
bombButton[i][j] = new JButton (bombString[i][j]);
if (setGridNew[a][b] == 0)
buttonGrid[a][b] = bombButton[a][b];
getBombsTotal--;
JLabel setBombsLabelNew = new JLabel();
setBombsLabelNew = setBombsLabel (" " String.valueOf (getBombsTotal) " Bombs Left");
else if (setGridNew[a][b] == 1 )
buttonGrid[a][b] = new JButton("x");
JOptionPane.showMessageDialog (null, "Game Over. You hit a Bomb!");
System.exit(0);
//create the content pane
public Container newContentPane(int length)
JPanel topPanel = new JPanel();
JPanel bottomPanel = new JPanel();
topPanel = newTopPanel(length);
bottomPanel = newBottomPanel (length);
JPanel contentPane = new JPanel();
contentPane.setOpaque (true);
contentPane.setLayout (new BorderLayout(5,5));
contentPane.add (topPanel, BorderLayout.NORTH);
contentPane.add (bottomPanel, BorderLayout.CENTER);
return contentPane;
public void closeFrame ()
frame = new JFrame ("Minesweeper");
frame.dispose();
public void launchFrame (int length)
//Makes sure we have nice window decorations
JFrame.setDefaultLookAndFeelDecorated(true);
//Sets up the top-level window
frame = new JFrame ("Minesweeper");
//Exits program when the closed button is clicked
frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
JMenuBar menuBar = new JMenuBar();
Container contentPane = new Container();
menuBar = newMenuBar();
contentPane = newContentPane (length);
//Sets up the menu bar and content pane
frame.setJMenuBar (menuBar);
frame.setContentPane (contentPane);
//Displays the window
frame.pack();
frame.setVisible (true);
public static void main (String args[])
//Default length is 5
length = 5;
MinesweeperGUI minesweeper = new MinesweeperGUI();
minesweeper.launchFrame(length); -
Urgent Help Needed in this Report
hi frd. help me in this report.
parameter : plant,material no,company code,storage location.
display: material no, material desc, UOM, ROL, warehouse, open po, open po qty, open pr no, open pr qty.
Kindly Give me tips for doing this report.
thank u
Pari Vendhan.RHi Pari,
Go to se38 --Abap editior..
chose the includes u like to be as
Include <>_top.
Include <>_subr.
then follow the events....
Initialization.
( as per requirement).
At selection-screen.
Perform fetch _data.
Perform fefilloutput.
any other logic to be followed for u r report.
end-of-selection.
Perform output.
In include top.
Put the declarartion part and the selection-screen block.
SELECTION SCREEN
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE text-001.
PARAMETERS : pa_werks LIKE table name-werks
pa_material no like tablename-field.
SELECTION-SCREEN END OF BLOCK b1.
like wise u need to put the logic for the requirement
Thanks
Mohinder Singh Chauhan -
HI ALL,
I have created a queue table and queue as below. i call enqueue procedure in after update of a trigger. With a package variable 'FISCFILE' . When I execute the update Of it it tells invalid queue name . can anyone help me with this
SQL> ed select
SQL> ed select
SQL> SELECT Name FROM User_Queues WHERE Name LIKE '%FISC%';
NAME
AQ$_QT_FISCFILE_E
Q_FISCFILE
SQL>
SQL> SELECT Queue_Table FROM User_Queue_Tables WHERE Queue_Table LIKE '%FISC%';
QUEUE_TABLE
QT_FISCFILE
SQL> Spool Off
Value Of PACKAGE variable:-
Package VARIABLE :='FISCFILE';
UPDATE TL_PYMT_DETAILS
SET PYMT_TYPE ='RTGS',
STATUS_CODE =91,
FISC_STATUS ='N',
PROC_DATE = TRUNC(SYSDATE)
WHERE PYMT_REF ='R0421141' ;
Queue Name :- STS_AQ_ADM.Q_FISCFILE
UPDATE TL_PYMT_DETAILS
ERROR AT line 1:
ORA-20001: QUEUE NAME INVALID PLEASE RERUN WITH CORRECT QUEUE NAME
ORA-06512: AT "STS_TW_DBA.TRG_FISC_GEN", line 16
ORA-04088: error during execution OF TRIGGER 'STS_TW_DBA.TRG_FISC_GEN'Dear All,
Sorry For the delayed reply. The Payload name was given wrong. -
HELP Needed with this error: Exception in thread "main" java.lang.NoClass
Folks,
I am having a problem connecting to my MSDE SQL 2000 DB on a WindowsXP pro. environment. I am learning Java and writing a small test prgm to connect the the database. The code compiles ok, but when I try to execute it i keep getting this error:
"Exception in thread "main" java.lang.NoClassDefFoundError: Test1"
I am using the Microsoft jdbc driver and my CLASSPATH is setup correctly, I've also noticed that several people have complained about this error, but have not seen any solutions....can someone help ?
Here is the one of the test programs that I am using:
import java.sql.*;
* Microsoft SQL Server JDBC test program
public class Test1 {
public Test1() throws Exception {
// Get connection
DriverManager.registerDriver(new
com.microsoft.jdbc.sqlserver.SQLServerDriver());
Connection connection = DriverManager.getConnection(
"jdbc:microsoft:sqlserver://LAPTOP01:1433","sa","sqladmin");
if (connection != null) {
System.out.println();
System.out.println("Successfully connected");
System.out.println();
// Meta data
DatabaseMetaData meta = connection.getMetaData();
System.out.println("\nDriver Information");
System.out.println("Driver Name: "
+ meta.getDriverName());
System.out.println("Driver Version: "
+ meta.getDriverVersion());
System.out.println("\nDatabase Information ");
System.out.println("Database Name: "
+ meta.getDatabaseProductName());
System.out.println("Database Version: "+
meta.getDatabaseProductVersion());
} // Test
public static void main (String args[]) throws Exception {
Test1 test = new Test1();I want to say that there was nothing wrong
with my classpath config., I am still not sure why
that didn't work, there is what I did to resolved
this issue.You can say that all you like but if you are getting NoClassDefFound errors, that's because the class associated with the error is not in your classpath.
(For future reference: you will find it easier to solve problems if you assume that the problem is your fault, instead of trying to blame something else. It almost always is your fault -- at least that's been my experience.)
1. I had to set my DB connection protocol to TCP/IP
(this was not the default), this was done by running
the
file "svrnetcn.exe" and then in the SQL Server Network
Utility window, enable TCP/IP and set the port to
1433.Irrelevant to the classpath problem.
2. I then copied all three of the Microsoft JDBC
driver files to the ..\jre\lib\ext dir of my jdk
installed dir.The classpath always includes all jar files in this directory. That's why doing that fixed your problem. My bet is that you didn't have the jar file containing the driver in your classpath before, you just had the directory containing that jar file.
3. Updated my OS path to located these files
and....BINGO! (that simple)Unnecessary for solving classpath problems.
4. Took a crash course on JDBC & basic Java and now I
have created my database, all tables, scripts,
stored procedures and can read/write and do all kinds
of neat stuff.All's well that ends well. After a few months you'll wonder what all the fuss was about. -
Hello,
I would like to enquire on whether this VI has any error. I need to configure the digital input as a positive limit switch which is a sensor which when blocked, will produce a change in the voltage pulse.
Attachments:
sensor.vi 34 KBHello,
I could not open. Can you save it for LabView 8.2 or 8.5?
Andy
Best Regards,
Andy
PCI-7356@UMI7764; PCIe-6320@SCB-68; LV2011; Motion Assistant 2.7; NI Motion 8.3; DAQmx 9.4; Win7 -
Help needed with this tutorial please
Hello in this InsertUpdateDelete tutorial at:
http://developers.sun.com/prodtech/javatools/jscreator/learning/tutorials/index.jsp
or
http://developers.sun.com/prodtech/javatools/jscreator/learning/tutorials/2/inserts_updates_deletes.html
and in this paragraph:
Changing the Column Components
and this statement
In the Visual Designer, select the top Drop Down List component in the Table.
"It's pretty confusing because there isn't a Drop Down List component in the Table as far as i can tell. There is a Drop Down List on the canvas up above this data table, but that has already been bound in a previous process, here is that previous proces:"
Configuring the Drop Down List
Select the Drop Down List in the Visual Designer and, in the Properties window, change its General > id property to personDD.
Right-click the personDD Drop Down List in the Visual Designer and choose Bind to Data from the pop-up menu. The Bind to Data dialog box appears.........
Can anyone tell me where i can get help with this tutorial or where i can download the finished program so i can sync up with what is actually being referenced in the questional statement that i mentioned above please?
Thanks very much!
BobKIn Step 5 of "Changing the Column Components" you change the Trip Type column to a drop-down list.
5. Select TRIP.TRIPTYPEID from the Selected list and make the following changes:
* Change the Header text field from TRIPTYPEID to Trip Type.
* Using the drop-down list, change the Component Type from Static Text to Drop Down List.
6. Click OK to enforce your changes and dismiss the window. If the table columns are too wide after performing the above steps, you can resize them by selecting the first component in each column and dragging its selection handles.
7. In the Visual Designer, select the top Drop Down List component in the Table. Right-click and choose Bind to Data from the pop-up menu. The Bind to Data dialog box opens. -
Hello everyone,
We have a table with around 2-3 million records. There are two columns, ID (Primary Key) and NEXT_ID like this:
select ID, NEXT_ID from table_id;
ID NEXT_ID
100 200
150 220
160
180
200 300
220
300 20000
20000
We expect to get a output like following:
ID SAME_ID
100 100
200 100
300 100
20000 100
150 150
220 150
160 160
180 180
Could anybody please help us. Thanks in advance!!!Hi,
Here's one way:
SELECT id
, CONNECT_BY_ROOT id AS same_id
FROM table_x
START WITH id NOT IN (
SELECT next_id
FROM table_x
WHERE next_id IS NOT NULL
CONNECT BY id = PRIOR next_id; -
Help needed understanding this connection
I am trying to follow some previous written code to understand JDBC better. When i have previously connected to a database, i have created a connection and then called it up when needed. In this code i have found though, they seem to use somthing called a datasource?
public static Connection getXADBConnection() { Connection conn = null; DataSource ds = null; try { Object obj = lookup(MovieConstants.MOVIE_XA_DATASOURCE_NAME); ds = (DataSource) narrow(obj, DataSource.class); conn = ds.getConnection(); } catch (SQLException ex) { throw new DAORuntimeException(ex); } return conn; }
So is datasource a connection already provided?? If so, is it better to use a datasource or to register through a driver manager? Also, if its not too much to ask, i am struggling to understand the first two lines in the try loop, what exactly is this doing?
cheersnick2price wrote:
...try loop...Unless that was a typo, I think you should put off learning JDBC for a while and start with the basics.
Start here:
[http://java.sun.com/docs/books/tutorial/] -
Hi All,
I create following query which return my required results. but when i insert a new entry in the table it returns a new group of the same month and not add it in the above group where i doing mistake any idea ????
My required results
SQL> SELECT DISTINCT TO_CHAR(T.POS_DATE, 'Month') Month,count(*) Date_rec,sum(t.amount) amount,
2 t.Asset, avg(t.amount) avg_ora_col,Sum(t.amount)/ count(*) "Normal Average"
3 from pos t
4 group by t.pos_date,t.asset;
MONTH DATE_REC AMOUNT ASSET AVG_ORA_COL Normal Average
November 3 750 Loans 250 250
December 2 900 Loans 450 450
SQL> select * from pos;
POS_DATE ASSET AMOUNT
01-NOV-07 Loans 100
01-NOV-07 Loans 250
01-NOV-07 Loans 400
02-NOV-07 Loans 100
02-NOV-07 Loans 250
02-NOV-07 Loans 400
03-NOV-07 Loans 100
03-NOV-07 Loans 250
03-NOV-07 Loans 400
09-DEC-07 Loans 500
09-DEC-07 Loans 400
11 rows selected.
After insertion records in table it looks like following:
SQL> SELECT DISTINCT TO_CHAR(T.POS_DATE, 'Month') Month,count(*) Date_rec,sum(t.amount) amount,
2 t.Asset, avg(t.amount) avg_ora_col,Sum(t.amount)/ count(*) "Normal Average"
3 from pos t
4 group by t.pos_date,t.asset;
MONTH DATE_REC AMOUNT ASSET AVG_ORA_COL Normal Average
November 3 750 Loans 250 250
December 2 900 Loans 450 450
November 1 300 Loans 300 300
December 1 300 Loans 300 300
SQL> select * from pos;
POS_DATE ASSET AMOUNT
01-NOV-07 Loans 100
01-NOV-07 Loans 250
01-NOV-07 Loans 400
02-NOV-07 Loans 100
02-NOV-07 Loans 250
02-NOV-07 Loans 400
03-NOV-07 Loans 100
03-NOV-07 Loans 250
03-NOV-07 Loans 400
09-DEC-07 Loans 500
09-DEC-07 Loans 400
10-DEC-07 Loans 300
27-NOV-07 Loans 300
13 rows selected.
My requirment is following
SQL> SELECT DISTINCT TO_CHAR(T.POS_DATE, 'Month') Month,count(*) Date_rec,sum(t.amount) amount,
2 t.Asset, avg(t.amount) avg_ora_col,Sum(t.amount)/ count(*) "Normal Average"
3 from pos t
4 group by t.pos_date,t.asset;
MONTH DATE_REC AMOUNT ASSET
November 4 637 Loans
December 2 600 Loans I want to divide no. of occurance of dates.
which is 4 in Nov and 2 in dec.
Message was edited by:
53637hi,
try this query
Instead of grouping by t.pos_date group by TO_CHAR(T.POS_DATE, 'Month')
SELECT DISTINCT TO_CHAR(T.POS_DATE, 'Month') Month,count(*) Date_rec,sum(t.amount) amount,
t.Asset, avg(t.amount) avg_ora_col,Sum(t.amount)/ count(*) "Normal Average"
from pos t
group by TO_CHAR(T.POS_DATE, 'Month'),t.asset
hope this will work
Regards,
Sridhar -
Help needed with this scenario
Hi,
This is a scenario to be implemented using workflows.
Can you tell me how to go about with this.
there is a form on the portal. User enters some details there. Then there is a submit button. when the user presses the submit button, a workflow is triggered on the R/3 side. A work item is sent to the manager which has a form ( the form's layout and data are the same as that of the portal screen ). Basically whatever the user enters in the portal screen is sent as a form to his manager, who can then approve it or reject it.
Can anyone tell me how this can be done.....the general steps...connectivity between portal and R/3 workflowHi Vijay,
If you are on R3 Enterprise or above, you can crate a BSP application to get user data and create an iview for this BSP Application. Within BSP application you can use "SWJ_WAPI_START_WORKFLOW" to trigger the workflow.
Cheers,
Sanjeev -
Help need with this expression
I am trying to calculate the ratio... so basically doing the adding two textboxes different textboxes and then diving them with the the sum of two different textboxes... but i am getting an #error..
=(iif(reportItems!Textbox76.Value = nothing,"0.00",reportItems!Textbox76.Value) + iif(reportitems!Textbox94.Value = nothing,"0.00",reportitems!Textbox94.Value)) / iif(((IIF(reportitems!Textbox69.Value = nothing,"0.00",reportitems!Textbox69.Value) + iif(reportitems!Textbox85.Value = nothing,"0.00",reportitems!Textbox85.Value))) = "0.00",1,((IIF(reportitems!Textbox69.Value = nothing,"0.00",reportitems!Textbox69.Value) + iif(reportitems!Textbox85.Value = nothing,"0.00",reportitems!Textbox85.Value))))
Thanks
KarenHi Karen,
I have tested the expression below, it turn out that if one of textboxes's value contain the character except number, then the result of this expression is #Error.
In your scenario, please ensure that there is no any #Error for the below expression:
=Cint(ReportItems!TextBox76.Value)
=Cint(ReportItems!TextBox94.Value)
=Cint(ReportItems!TextBox69.Value)
=Cint(ReportItems!TextBox85.Value)
If you have any questions, please feel free to ask.
Regards,
Charlie Liao
TechNet Community Support -
Hi, i have written a program for solving a power flow question,using Gaussian elimination method to solve for matrices.The program is pretty long,and i have tried breaking the program into smaller modules,but there were errors in the numeric results at the end.
I need some suggests as to how to break the program into smaller modules???
/* Example 10.6 Pg 347 from Bergen.
Demonstration of Newton-Raphson Iteration.
import java.util.*;
import java.io.*;
import java.lang.Math;
import java.lang.ArrayIndexOutOfBoundsException;
public class NewtonRaphsonIt
public static void main( String args[])throws ArrayIndexOutOfBoundsException
int Deg = 360;
int Loop = 3;
double pi = 3.141592653589793238;
double limit = Math.abs(5E-6);
int i,j,k,u;
double V1,V2,V3,P2,P3,Q3,deltaP2,deltaP3,deltaQ3;
double Theta1,Theta2,Theta3;
double P1,Q1,Q2;
double P_Loss,Q_Loss,PF;
double maxi,temp,temp2;
int tempi=0;
//values given
P2=0.6661; P3=-2.8653; Q3=-1.2244;
V1=1; V2=1.05; Theta1=0;
//values supposely to be chosen as a rough guess
Theta2=Theta3=0; V3=1;
double [][] Y_bus = {{-19.98,10,10},{10,-19.98,10},{10,10,-19.98}};
double [][] J = new double [3][3];
double [] fx = new double [3];
double [] oldx = {Theta2,Theta3,V3};
double [] x = {Theta2,Theta3,V3};
double [] V = {V1,V2,Theta1};
double [] Bus = {P2,P3,Q3};
double [] delta = new double [3];
double [] ANS = new double [3];
int f = fx.length;
int y = Y_bus.length;
int z = J.length;
int c = Bus.length;
int h = delta.length;
int e = ANS.length;
int ox= oldx.length;
//System.out.println("Arrary size for Ybus is:" +n);
//output Ybus Matrix
System.out.println(" Ybus is:");
System.out.println("---------");
for ( i=0; i<y; i++)
for ( j=0; j<y; j++)
System.out.print(+Y_bus[i][j]+" "+", ");
System.out.println();
for ( u=1; u<Loop+1; u++){
//while(delta[0] < limit){
//Jacobian matrix
//deltaP2/deltaTheta2
J[0][0] = (Math.abs(V[1]))* (Math.abs(V[0])) * Y_bus[1][0] * (Math.cos(x[0]))
+ (Math.abs(V[1]))* (Math.abs(x[2])) * Y_bus[1][2] * (Math.cos(x[0]-x[1]));
//deltaP2/deltaTheta3
J[0][1] = -(Math.abs(V[1]))* (Math.abs(x[2])) * Y_bus[1][2] * (Math.cos(x[0]-x[1]));
//deltaP2/delta|V3|
J[0][2] = (Math.abs(V[1])) * Y_bus[1][2] * (Math.sin(x[0]-x[1]));
//deltaP3/deltaTheta2
J[1][0] = -(Math.abs(V[1]))*(Math.abs(x[2])) * Y_bus[2][0] * (Math.cos(x[1]-x[0]));
//deltaP3/deltaTheta3
J[1][1] = (Math.abs(V[0])) *(Math.abs(x[2])) * Y_bus[2][0] * (Math.cos(x[1]))
+(Math.abs(V[1])) *(Math.abs(x[2])) * Y_bus[2][1] * (Math.cos(x[1]-x[0]));
//deltaP3/delta|V3|
J[1][2] = (Math.abs(V[0])) * Y_bus[2][0] * (Math.sin(x[1]))
+(Math.abs(V[1]))* Y_bus[2][1] * (Math.sin(x[1]-x[0]));
//deltaQ3/deltaTheta2
J[2][0] = - Y_bus[2][0] * (Math.abs(x[2])) * (Math.abs(V[1])) *(Math.sin(x[1]-x[0]));
//deltaQ3/deltaTheta3
J[2][1] = (Math.abs(x[2]))*(Math.abs(V[0])) * Y_bus[2][0] * (Math.sin(x[1]))
+(Math.abs(x[2]))*(Math.abs(V[1])) * Y_bus[2][1] * (Math.sin(x[1]-x[0]));
//deltaQ3/delta|V3|
J[2][2] = -((Math.abs(V[0])) * Y_bus[2][0] * (Math.cos(x[1]))
+ (Math.abs(V[1])) * Y_bus[2][1] * (Math.cos(x[1]-x[0]))
+ (Math.abs(x[2]))* 2 * Y_bus[2][2]);
//output Jacobian Matrix
System.out.println();
System.out.println(+u+")"+" Jacobian Matrix is:");
System.out.println("-----------------------");
for ( i=0; i<z; i++)
for ( j=0; j<z; j++)
System.out.print(+J[i][j]+" "+", ");
System.out.println();
// variable P2
fx[0] = (Math.abs(V[1]))*(Math.abs(V[0])) * Y_bus[1][0] * (Math.sin(x[0]-V[2]))
+ (Math.abs(V[1]))*(Math.abs(x[2])) * Y_bus[1][2] * (Math.sin(x[0]-x[1]));
//System.out.println("P2 is :"+fx[0]);
// variable P3
fx[1] = (Math.abs(x[2]))*(Math.abs(V[0])) * Y_bus[2][0] * (Math.sin(x[1]-V[2]))
+ (Math.abs(x[2]))*(Math.abs(V[1])) * Y_bus[2][1] * (Math.sin(x[1]-x[0]));
//System.out.println("P3 is :"+fx[1]);
// variable Q3
fx[2] = -((Math.abs(x[2]))*(Math.abs(V[0])) * Y_bus[2][0] * (Math.cos(x[1]-V[2]))
+ (Math.abs(x[2]))*(Math.abs(V[1])) * Y_bus[2][1] * (Math.cos(x[1]-x[0]))
+ (Math.abs(x[2]))*(Math.abs(x[2])) * Y_bus[2][2]);
//System.out.println("Q3 is :"+fx[2]);
//Output f(x)
System.out.println();
System.out.println(+u+")"+" Function f(x) is:");
System.out.println("--------------------");
for ( k=0; k<f; k++)
System.out.println(+fx[k]);
System.out.println();
//ouput P2,P3,Q3 as a matrix
System.out.println();
System.out.println(+u+")"+" Matrix [P2,P3,Q3] is:");
System.out.println("------------------------");
for ( k=0; k<c; k++)
System.out.println(+Bus[k]);
System.out.println();
//finding values of deltaP2,deltaP3,deltaQ3
System.out.println();
System.out.println(+u+")"+" Matrix [d.P2,d.P3,d.Q3] is:");
System.out.println("------------------------------");
for ( k=0; k<h; k++)
System.out.println(delta[k]= Bus[k]- fx[k]);
System.out.println();
//find delta x={deltaTheta2,deltaTheta3,delta|V3|}
//Gaussian Elimination method
//solve Ax=b
//matrix J will be destroyed,solution will be in matrix delta
if(J[0].length != z)
System.out.println("Matrix J must be a Square Matrix!");
return;
for(j=0; j<z; j++)
maxi=-1E-12;
for(i=j; i<z; i++)
if(Math.abs(J[i][j])> maxi)
tempi=i;
maxi=Math.abs(J[i][j]);
//System.out.println(+tempi);
if(maxi<1E-12)
System.out.println
("The Set either has mutltiple solutions or no unique solution!");
return;
//Permuting tempi row with the j-th row
if(tempi != j)
for(k=j; k<z; k++)
temp=J[j][k]; //store 1st row into temp space
J[j][k]=J[tempi][k]; //store last row into 1st row
J[tempi][k]=temp; //store 1st row back into last row
temp=delta[j]; //store 1st row into temp space
delta[j]=delta[tempi]; //store last row into 1st row
delta[tempi]=temp; //store 1st row back into last row
//System.out.println("deltatemp:"+delta[j]);
//Divide j-th row by J[j][j]
temp=J[j][j];
delta[j]=delta[j]/temp;
System.out.println("delta1:"+delta[j]);
for(k=j; k<z; k++)
J[j][k]=J[j][k]/temp;
for(i=0; i<z; i++)
if(i != j)
temp=J[i][j];
temp2=delta;
for(k=0; k<z; k++)
J[i][k] = J[i][k]-temp*J[j][k];
delta[i]= temp2-temp*delta[j];
System.out.println("delta:"+delta[j]);
System.out.println("J:"+J[i][k]);
// values of deltax in radians
System.out.println(+u+")"+" The solution for AX=b is:");
System.out.println("----------------------------");
for(i=0; i<z; i++)
System.out.println(+delta[i]);
x[i] = delta[i];
// values of deltax in degrees
System.out.println();
System.out.println(+u+")"+" The solution for deltaX is:");
System.out.println("------------------------------");
ANS[0] = x[0] * Deg/(2*pi);
ANS[1] = x[1] * Deg/(2*pi);
ANS[2] = x[2];
for(i=0; i<e; i++)
System.out.println(+ANS[i]);
//finding X^1=x^0 + deltax^0
System.out.println();
System.out.println(" The solution for X after iteration:"+"("+u+")");
System.out.println("---------------------------------------");
for(i=0; i<e; i++)
x[i] = oldx[i] + ANS[i];
System.out.println(+x[i]);
System.out.println();
//System.out.println("oldx:" +oldx[i]);
//System.out.println();
//update the oldx with the new values from x
for(i=0; i<ox; i++)
oldx[i] = x[i];
//System.out.println("oldx:" +oldx[i]);
//System.out.println();
//convert to radians for Math.sin/cos()
x[0] = x[0] * (2*pi)/Deg;
x[1] = x[1] * (2*pi)/Deg;
x[2] = x[2];
}//for loop
//if (delta[0] == limit)
// break;
//}//while loop
// calcuate P1,Q1,Q2
P1 = (Math.abs(V[0]))*(Math.abs(V[1])) * Y_bus[0][1]* (Math.sin(V[2]-x[0]))
+ (Math.abs(V[0]))*(Math.abs(x[2])) * Y_bus[0][2] * (Math.sin(V[2]-x[1]));
System.out.println("P1 is :"+P1);
System.out.println();
Q1 = -((Math.abs(V[0]))*(Math.abs(V[1])) * Y_bus[0][1] * (Math.cos(V[2]-x[0]))
+ (Math.abs(V[0]))*(Math.abs(x[2])) * Y_bus[0][2] * (Math.cos(V[2]-x[1]))
+ (Math.abs(V[0]))*(Math.abs(V[0])) * Y_bus[0][0]);
System.out.println("Q1 is :"+Q1);
System.out.println();
Q2 = -((Math.abs(V[1]))*(Math.abs(V[0])) * Y_bus[1][0] * (Math.cos(x[0]-V[2]))
+ (Math.abs(V[1]))*(Math.abs(x[2])) * Y_bus[1][2] * (Math.cos(x[0]-x[1]))
+ (Math.abs(V[1]))*(Math.abs(V[1])) * Y_bus[1][1]);
System.out.println("Q2 is :"+Q2);
System.out.println();
//Power Loss P_Loss = (P1+P2) - P3
P_Loss = (P1+P2) - P3;
System.out.println("Power Loss is :"+P_Loss);
System.out.println();
System.out.println("P2 is :"+P2);
System.out.println();
System.out.println("P3 is :"+P3);
System.out.println();
System.out.println("Q3 is :"+Q3);
System.out.println();
//Reactive Power Loss
Q_Loss = (Q1+Q2) - Q3;
System.out.println("Reactive Power Loss:" +Q_Loss);
System.out.println();
System.out.println("Q1 is :"+Q1);
System.out.println();
System.out.println("Q2 is :"+Q2);
System.out.println();
System.out.println("Q3 is :"+Q3);
System.out.println();
//Power factor PF = P/sqrt[(P^2 + Q^2)]
PF = P3/(Math.sqrt( (P3*P3) + (Q3*Q3)));
System.out.println("Power Factor is :"+PF);
System.out.println();Start off by creating a Matrix class, rather than doing it all with 2d arrays in the main method? (The Matrix class might do little more than be a wrapper around a 2d array, but at least it would be a bit more modular.)
-
Help needed with this assignment
Heres the question i have to complete.
Build a new class LotsOfBooks which has an attribute which is an array of Book objects and initialises this array using a constructor method parameter. Write a method "setAllReserved" in LotsOfBooks which invokes setReserved( ) on all the books in the array.
I have to submit my code into a Java compiler that tests my code against the teachers, if it is wrong you get given an error message. My code compiles fine in the compiler Blue J, but in the online tester i get this message.
mismatch in setAllReserved
Sometimes if i jig things about i get a null pointer error in the tester. I do not nesserseraly want a written java answer, just to know what i am doing wrong and what i can change.
NB The array does not have to have any values and the Book class was already given.
public class LotsOfBooks
private Book[] books;
public LotsOfBooks(Object Book[])
public void setAllReserved()
for (int i=0; i<books.length; i++){
Book b =books;
b.setReserved();
public class Book
String author;
String title;
boolean reserved;
boolean onLoan;
public Book(String author, String title){
this.author = author;
this.title = title;
reserved = false;
onLoan = false;
public void setReserved(){
reserved = true;
public void setOnLoan(){
onLoan = true;
public boolean isOnLoan(){
return onLoan;
public String getAuthor(){
return author;well for the preferred on i get
DataSet 1
----------Compilation output--------------------------------------
javac BookTester1.java
BookTester1.java:18: cannot resolve symbol
symbol : constructor LotsOfBooks (Book[])
location: class LotsOfBooks
LotsOfBooks lob = new LotsOfBooks(books);
^
1 error
----------Sorry expected answer was-------------------------------
The method setAllReserved worked OK - well done
----------Your answer however was---------------------------------
++ ERROR ++
Your program did not compile
Scroll back in this window to find more details
[S] Sorry exercise ci101/Wk12BookA was not completed successfully
and for if not i get
DataSet 1
----------Compilation output--------------------------------------
javac BookTester1.java
----------Sorry expected answer was-------------------------------
The method setAllReserved worked OK - well done
----------Your answer however was---------------------------------
Exception in thread "main" java.lang.ClassCastException
at LotsOfBooks.<init>(LotsOfBooks.java:6)
at BookTester1.main(BookTester1.java:18)
[S] Sorry exercise ci101/Wk12BookA was not completed successfully
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Problems installation Photoshop Elements 8 on Windows 7
I tried to install Photoshop elements 8 on my Windows 7 computer, but the installation gives a failure after a certain time. A file "...cab" is not working and may be corrupt ( exact failure code I can give, if necesary). Is there any possibility to
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I�m an undergraduate student from a local university in Malaysia and right now I�m doing my final year report - implementing healthcare systems using smart cards. It�s an idea about by using the smart card; we can assess the personal details, insuran