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variable counter is not incrementing with adding new booking objects [closed]

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// Entity class for booking
public class Booking {
private int distance;
private static int bookingId = 1000;
private int cabId;
private int customerId;
private int billingAmount;
public Booking() {
bookingId++;
System.out.println(bookingId);
}
}
// Service class for booking, I'm setting up all parameters here.
public class BookCab {
public Booking bookCab(int distance, int customerId){
Booking book = new Booking();
CabDao cabDao = new CabDaoImpl();
book.setDistance(distance);
book.setCustomerId(customerId);
book.setCabId(cabDao.getCabId()); //retrieving cab data from database
if(distance>10) {book.setBillingAmount(305 + (distance-10)*25);}
else if (distance <10 & distance>5) {
book.setBillingAmount(180 + (distance-5)*25);
}
else if (distance <5 & distance>1) {
book.setBillingAmount(100 + (distance-1)*20);
}
else book.setBillingAmount(100);
return book;
}
}
// This is DAO Implementation for accessing the Database.
public class BookingDaoImpl implements BookingDao {
Connection connection = null;
PreparedStatement ptmt = null;
ResultSet resultSet = null;
public BookingDaoImpl() {};
private Connection getConnection() throws SQLException {
Connection conn;
conn = DbUtil.getInstance().getConnection();
return conn;
}
public void addBooking(Booking booking) {
try {
String queryString = "INSERT INTO Booking(bookingId, customerId, cabId, distance, chargingAmount) VALUES(?,?,?,?,?)";
connection = getConnection();
ptmt = connection.prepareStatement(queryString);
ptmt.setInt(1, booking.getBookingId());
ptmt.setInt(2, booking.getCustomerId());
ptmt.setInt(3, booking.getCabId());
ptmt.setInt(4, booking.getDistance());
ptmt.setInt(5, booking.getBillingAmount());
ptmt.executeUpdate();
System.out.println("Data Added Successfully");
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if (ptmt != null)
ptmt.close();
if (connection != null)
connection.close();
} catch (SQLException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
// Driver class
public class MainView {
public static void main(String[] args) {
BookCab bookCab = new BookCab();
BookingDao bookingDao = new BookingDaoImpl();
bookingDao.addBooking(bookCab.bookCab(16, 691744));
}
}
/* Output
1001
Data Added Successfully
1001
Data Added Successfully
1001
Data Added Successfully
*/
Counter is not working
booking id is not increamenting
I've tried printing counter right after increamenting but its same there as well.

You only create one Booking instance in your main (or, to be exact, you create a single BookCab instance and call bookCab.bookCab(16, 691744), which creates the one Booking instance), which means it should print 1001.
If you run that application multiple times (which, based on your output, I assume you do), the Booking class will be loaded and initialized on each execution, so it will reset the counter back to 1000.
If you want the value of that static variable to live across executions of your applications, you must persist it in some file or DB table and load it when the Booking class is initialized.
P.S., you might want to store the current bookingId value in some instance variable, so that each Booking instance is associated with a unique bookingId value.

Your main method only creates a single booking, which will have Id 1001 every time you run the application.
Create a loop in your main method to make more than one booking, and check to see whether or not it's being incremented.
So change your main from
public static void main(String[] args) {
BookCab bookCab = new BookCab();
BookingDao bookingDao = new BookingDaoImpl();
bookingDao.addBooking(bookCab.bookCab(16, 691744));
}
to
public static void main(String[] args) {
for (int i = 0; i < 3; ++i) {
BookCab bookCab = new BookCab();
BookingDao bookingDao = new BookingDaoImpl();
bookingDao.addBooking(bookCab.bookCab(16, 691744));
}
}

static variable increment will not help you solve overall implementation problem here, it simply works as you expect when you create multiple objects for Booking class but catch here is what if the application is restarted ?
The counter is set back to starting point which is 1000.
#Eran has already indicated about this issue in the comment.

Add item to JList in IntelliJ-IDEA

I cannot for the life of me get this to work and I have been trying for at least 15 hours total. Here is all my code. Please tell me what I am doing wrong that the items I want to add to my JList are not showing up when I run it but are being added to my listmodel.
These are the declarations for my jlist and defaultlistmodel.
private EventList issuesEventList = new BasicEventList();
public JList lstContacts;
Under this is all of my event listeners which do not have too much relevance and then my main function and my function to fill my JList:
public static void main(String[] args) throws SQLException {
ContactsDB contactsDB = new ContactsDB();
JFrame frame = new JFrame("VirtualRolodex");
frame.setContentPane(new VirtualRolodex().mainPanel);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
contactsDB.createContactsTable();
contactsDB.loadContactsList();
}
public void fillList(EventList<String> contactsList){
issuesEventList.clear();
issuesEventList.addAll(contactsList);
DefaultEventListModel issuesListModel = new DefaultEventListModel(issuesEventList);
JList lstContacts = new JList(issuesListModel);
lstContacts.setModel(issuesListModel);
}
That is my class for my GUI Form and then I also have a database class that handles the writing and reading to and from the database.
public void loadContactsList() throws SQLException {
ResultSet results;
Statement statement = dbConnection.createStatement();
String query = "SELECT companyName,firstName,lastName FROM contacts;";
contactList.clear();
contactList.add("New Contact");
try {
results = statement.executeQuery(query);
try {
while(results.next())
{
String company = results.getString("companyName");
String first = results.getString("firstName");
String last = results.getString("lastName");
contactList.add(company + ": " + last + ", " + first);
}
fillList(contactList);
} catch(SQLException e){
System.err.println("Trouble accessing iterating through "+
"results in UsersDB.getAllUsers.");
throw e;
} finally {
results.close();
}
} catch(SQLException e){
System.err.println("Trouble accessing getting results in "+
"ContactsDB.loadContactsList()");
throw e;
} finally {
statement.close();
}
}
This is the code from that class that loads an eventlist with the contacts basic info that I want to be in the JList.
Please tell me what I am doing wrong here. All the information passes back to the main class but nothing is displaying in the JList. I'm also using Intellij which has the built in GUI builder so everything is already set up in the GUI.

Delete data from JTable AND database

I've made a JTable which populates with data from my database. It takes data from textfields and adds them to the table and the database. The thing is I have a delete button, and I got it to delete the selected row from the table itself (using the defaultTableModel) but it won't delete that data from the actual database. As soon as I run the program again, the deleted row is sitting in the JTable again.
This may get messy but hopefully someone can figure out what I'm missing. Help would be appreciated, but do not, I'm running low on time and can't exactly overhaul parts of my system (though I don't think that's necessary, considering the Add button works)
Sorry about all the code, not sure what bits will and won't be useful, I think the most useful would be the add and delete buttons, which are at the bottom, above the 'updateReview' method.
public class MovieReviewSystem extends JFrame {
/**
* TODO: This method should construct a new MovieReviewSystem window and populate it using the MovieReviewDSC.
* Before displaying anything, this class should ask the user whether to load *everything* or just
* the 'useful' reviews.
*/
// Main method to run the class
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new MovieReviewSystem().setVisible(true);
}
});
}
// Load data method
private Object[][] loadData()
{
List<MovieReview> movieData;
try {
movieData = MovieReviewDSC.list();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
movieData = new ArrayList<>();
}
Object[][] data = new Object[movieData.size()][];
for (int i = 0; i < movieData.size(); ++i)
{
MovieReview temp = movieData.get(i);
data[i] = new Object[]
{
temp.getId(),
temp.getUser(),
temp.getMovie(),
temp.isFeatured(),
temp.getRating(),
temp.getHelpful(),
temp.getUnhelpful(),
temp.getComments()
};
}
return data;
}
private Object[][] data = loadData();
private String[] columnNames = {"ID", "User", "Movie", "Featured?", "Rating", "Helpful", "Unhelpful"};
private MovieReviewTableModel tableModel = new MovieReviewTableModel(data, columnNames);
JTable table = new JTable(tableModel);
public MovieReviewSystem() {
setTitle("Movie Review System");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//setMinimumSize(getSize());
setSize(540,600);
createTable();
}
private void createTable()
{
final TableRowSorter<TableModel> rowSorter = new TableRowSorter<TableModel>(tableModel);
//Overall Panel
JPanel bigPanel = new JPanel(new BorderLayout());
add(bigPanel);
// overall search Panel
JPanel searchPanel = new JPanel(new BorderLayout());
searchPanel.setBorder(BorderFactory.createLineBorder(Color.BLACK));
bigPanel.add(searchPanel, BorderLayout.NORTH);
// search field panel
JPanel searchField = new JPanel();
searchPanel.add(searchField, BorderLayout.NORTH);
// Radio buttons panel
JPanel searchRadioButtons = new JPanel();
searchPanel.add(searchRadioButtons, BorderLayout.SOUTH);
//Search
JLabel searchLB = new JLabel("Search with keywords: ");
searchField.add(searchLB);
final JTextField searchTF = new JTextField(20); // eclipse says this needs to be final, don't change
searchField.add(searchTF);
JButton searchBT = new JButton("Search");
searchField.add(searchBT);
JRadioButton allRB = new JRadioButton("All");
searchRadioButtons.add(allRB);
allRB.setSelected(true); // 'All' selected by default
JRadioButton usersRB = new JRadioButton("Users");
searchRadioButtons.add(usersRB);
JRadioButton moviesRB = new JRadioButton("Movies");
searchRadioButtons.add(moviesRB);
// Search Button
searchBT.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
String searchString = searchTF.getText();
rowSorter.setRowFilter(RowFilter.regexFilter(searchString, 2)); //Apply search on movie
}
});
// this also allows for pressing enter to search
searchTF.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
String searchString = searchTF.getText();
rowSorter.setRowFilter(RowFilter.regexFilter(searchString, 2)); //Apply search on movie
/*if(moviesRB.isSelected())
{
rowSorter.setRowFilter(RowFilter.regexFilter(searchString, 2)); //Apply search on movie
}
else if(usersRB.isSelected())
{
rowSorter.setRowFilter(RowFilter.regexFilter(searchString, 1)); //Apply search on movie
}
else
{
rowSorter.setRowFilter(RowFilter.regexFilter(searchString, 1, 2)); //Apply search on movie
}*/
}
});
// END search field and buttons
// Three buttons
JPanel threeButtonPanel = new JPanel();
bigPanel.add(threeButtonPanel);
// Show only Featured
JButton onlyFeatured = new JButton("Only show Featured");
threeButtonPanel.add(onlyFeatured);
// Show only Helpful
JButton onlyHelpful = new JButton("Only show Helpful");
threeButtonPanel.add(onlyHelpful);
// Sort by Movie then Helpfulness Button
JButton sortByMovieThenHelpfulBT = new JButton("Sort by Movie then Helpfulness");
threeButtonPanel.add(sortByMovieThenHelpfulBT);
sortByMovieThenHelpfulBT.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
RowSorter.SortKey sortMovie = new RowSorter.SortKey(2, SortOrder.ASCENDING);
RowSorter.SortKey sortHelp = new RowSorter.SortKey(5, SortOrder.DESCENDING);
ArrayList<RowSorter.SortKey> sortKeyList = new ArrayList<RowSorter.SortKey>();
sortKeyList.add(sortMovie);
sortKeyList.add(sortHelp);
rowSorter.setSortKeys(sortKeyList);
}
});
//END Three Buttons
// *** TABLE ***
setLayout(new FlowLayout());
JScrollPane scrollPane = new JScrollPane(table); // table needs to be enclosed in a scrollpane
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); // select one row at a time
table.setPreferredScrollableViewportSize(new Dimension(500,300)); // size
//table.setFillsViewportHeight(true);
add(scrollPane);
setVisible(true);
// Row Sorter
table.setRowSorter(rowSorter);
// *** END Table ***
//Reset button -- NOT NECESSARY
JButton resetBT = new JButton("Reset sorting");
add(resetBT);
resetBT.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
rowSorter.setSortKeys(null);
}
});
// add button *********************
JButton addBT = new JButton("Add");
add(addBT);
addBT.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
JFrame idFrame = new JFrame();
String id = JOptionPane.showInputDialog(idFrame, "Enter an ID");
ReviewEditor editor = new ReviewEditor(MovieReviewSystem.this, id);
editor.pack();
editor.setVisible(true);
}
});
// delete button ****************
JButton deleteBT = new JButton("Delete");
add(deleteBT, BorderLayout.SOUTH);
deleteBT.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
int row = table.getSelectedRow();
if(row != -1)
{
int result = JOptionPane.showConfirmDialog(MovieReviewSystem.this, "Are you sure?");
if (result == JOptionPane.OK_OPTION)
{
tableModel.removeRow(row);
MovieReview movieReviewDelete = new MovieReview();
movieReviewDelete.setId((String) table.getValueAt(row, 0));
movieReviewDelete.setUser((String) table.getValueAt(row, 1));
movieReviewDelete.setMovie((String) table.getValueAt(row, 2));
movieReviewDelete.setFeatured((boolean) table.getValueAt(row, 3));
movieReviewDelete.setRating((int) table.getValueAt(row, 4));
movieReviewDelete.setHelpful((int) table.getValueAt(row, 5));
movieReviewDelete.setUnhelpful((int) table.getValueAt(row, 6));
movieReviewDelete.setComments((String) table.getValueAt(row, 7));
try {
MovieReviewDSC.delete(movieReviewDelete);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
});
}
/**
* TODO This method should attempt to update a MovieReview record in the database.
* #param isUpdate A boolean to indicate if the record should be updated or created new. If true; the update method should be used.
* #param review The MovieReview object to be updated or added
* #return a boolean indicating success (true) or failure (false)
*/
public boolean updateReview(boolean isUpdate, MovieReview review) {
if (isUpdate = false)
{
try {
MovieReviewDSC.add(review);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
else
{
try {
MovieReviewDSC.edit(review);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return true;
}
}
As you can see they call add and delete methods from MovieReviewDSC which is this class:
public class MovieReviewDSC {
private static Connection connection;
private static Statement statement;
private static PreparedStatement preparedStatement;
public static void connect() throws SQLException {
String url = "null"; //took this info out for obvious reasons
String user = "null";
String password = "null";
connection = DriverManager.getConnection(url, user, password);
statement = connection.createStatement();
}
public static void disconnect() throws SQLException {
if (preparedStatement != null) preparedStatement.close();
if (statement != null) statement.close();
if (connection != null) connection.close();
}
/**
* TODO: This method should find a MovieReview with the given ID in the database
* #param id The ID of the MovieReview to be found.
* #return If it exists; a MovieReview with the given ID. Otherwise null.
* #throws SQLException
*/
public static MovieReview find(String id) throws SQLException {
connect();
// Create query to find ID
String IDquery = "SELECT * FROM movie_review WHERE id = ?";
preparedStatement = connection.prepareStatement(IDquery);
preparedStatement.setString(1, id);
ResultSet rs = preparedStatement.executeQuery();
MovieReview movieReview = null; //null returned if ID doesn't exist
if (rs.next()) //if it does exist, creates new object and fills with attributes returned by query
{
movieReview = new MovieReview();
movieReview.setId(rs.getString(1));
movieReview.setUser(rs.getString(2));
movieReview.setMovie(rs.getString(3));
movieReview.setFeatured(rs.getBoolean(4));
movieReview.setRating(rs.getInt(5));
movieReview.setHelpful(rs.getInt(6));
movieReview.setUnhelpful(rs.getInt(7));
movieReview.setComments(rs.getString(8));
}
disconnect();
return movieReview;
}
/**
* TODO: This method should count the total number of MovieReviews in the database
* #return An int representing the number of MovieReviews
* #throws SQLException
*/
public static int count() throws SQLException {
connect();
String queryCount = "SELECT COUNT(*) FROM movie_review";
preparedStatement = connection.prepareStatement(queryCount);
ResultSet rs = preparedStatement.executeQuery();
MovieReview movieReview = null;
int count = 0; //set to 0 by default
if (rs.next())
{
count = rs.getInt(1); //Count will only return one column
}
disconnect();
return count;
}
/**
* TODO: This method should obtain a list of all MovieReviews from the database
* #return A list of all stored MovieReviews
* #throws SQLException
*/
public static List<MovieReview> list() throws SQLException {
connect();
String queryList = "SELECT * FROM movie_review";
preparedStatement = connection.prepareStatement(queryList);
ResultSet rs = preparedStatement.executeQuery();
ArrayList<MovieReview> movieReviewList = new ArrayList<MovieReview>();
MovieReview movieReview = null;
while(rs.next())
{
movieReview = new MovieReview();
movieReview.setId(rs.getString(1));
movieReview.setUser(rs.getString(2));
movieReview.setMovie(rs.getString(3));
movieReview.setFeatured(rs.getBoolean(4));
movieReview.setRating(rs.getInt(5));
movieReview.setHelpful(rs.getInt(6));
movieReview.setUnhelpful(rs.getInt(7));
movieReview.setComments(rs.getString(8));
movieReviewList.add(movieReview); // add to arrayList
}
return movieReviewList;
}
/**
* TODO: This method should try to add the given MovieReview to the database.
* Note: The ID of this MovieReview must be unique
* #param movieReview The MovieReview to be added
* #throws Exception If the ID of the MovieReview already exists in the database
*/
public static void add(MovieReview movieReview) throws Exception {
// set precondition that ID does not already exist
MovieReview temp = find(movieReview.getId()); // put ID in temp
boolean notExist = (temp == null); // temp should be null
if (!notExist) // If not, show error
{
String message = "The ID you are trying to add already exists.";
throw new Exception(message);
}
connect();
String insert = "INSERT INTO movie_review VALUES(?,?,?,?,?,?,?,?)";
preparedStatement = connection.prepareStatement(insert);
preparedStatement.setString(1, movieReview.getId());
preparedStatement.setString(2, movieReview.getUser());
preparedStatement.setString(3, movieReview.getMovie());
preparedStatement.setBoolean(4, movieReview.isFeatured());
preparedStatement.setInt(5, movieReview.getRating());
preparedStatement.setInt(6, movieReview.getHelpful());
preparedStatement.setInt(7, movieReview.getUnhelpful());
preparedStatement.setString(8, movieReview.getComments());
preparedStatement.executeUpdate();
disconnect();
}
/**
* TODO: This method should try to update an existing MovieReview with the details of the given MovieReview
* #param movieReview The MovieReview to be updated
* #throws Exception If the ID of the MovieReview doesn't already exist
*/
public static void edit(MovieReview movieReview) throws Exception {
// set precondition that ID being edited exists
MovieReview temp = find(movieReview.getId()); // find the ID
boolean exist = (temp != null); // Something needs to be in temp for exist to be true
if (!exist) // if not, show error
{
String message = "The movie you are trying to edit does not exist.";
throw new Exception(message);
}
connect();
String editString = "UPDATE movie_review " + "SET user = ?," + "SET movie = ?," + "SET isFeatured = ?,"
+ "SET rating = ?," + "SET helpful = ?," + "SET unhelpful = ?," + "SET comments = ?";
preparedStatement = connection.prepareStatement(editString);
preparedStatement.setString(1, movieReview.getUser());
preparedStatement.setString(2, movieReview.getMovie());
preparedStatement.setBoolean(3, movieReview.isFeatured());
preparedStatement.setInt(4, movieReview.getRating());
preparedStatement.setInt(5, movieReview.getHelpful());
preparedStatement.setInt(6, movieReview.getUnhelpful());
preparedStatement.setString(7, movieReview.getComments());
preparedStatement.executeUpdate();
disconnect();
}
/**
* TODO: This method should try to delete a MovieReview record from the database
* #param movieReview The MovieReview to be deleted
* #throws Exception If the ID of the MovieReview doesn't already exist
*/
public static void delete(MovieReview movieReview) throws Exception {
// set precondition that ID being deleted exists
MovieReview temp = find(movieReview.getId()); // find the ID
boolean exist = (temp != null); // Something needs to be in temp for exist to be true
if (!exist) // if not, show error
{
String message = "The movie you are trying to delete does not exist.";
throw new Exception(message);
}
try
{
connect();
String deleteString = "DELETE FROM movie_review WHERE id = ?";
preparedStatement = connection.prepareStatement(deleteString);
preparedStatement.setString(1, movieReview.getId());
preparedStatement.executeUpdate();
disconnect();
}
catch(SQLException e)
{
System.out.println(e);
}
}
The MovieReview class probably isn't necessary to include, but just in case:
class MovieReview {
private String id = "";
private String user = "";
private String movie = "";
private boolean isFeatured = false;
private int rating = 0;
private int helpful = 0;
private int unhelpful = 0;
private String comments = "";
public MovieReview(String id, String user, String movie, boolean isFeatured, int rating, int helpful, int unhelpful, String comments) {
this.id = id;
this.user = user;
this.movie = movie;
this.isFeatured = isFeatured;
this.rating = rating;
this.helpful = helpful;
this.unhelpful = unhelpful;
this.comments = comments;
}
public MovieReview(){}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUser() {
return user;
}
public void setUser(String user) {
this.user = user;
}
public String getMovie() {
return movie;
}
public void setMovie(String movie) {
this.movie = movie;
}
public boolean isFeatured() {
return isFeatured;
}
public void setFeatured(boolean isFavourite) {
this.isFeatured = isFavourite;
}
public int getRating() {
return rating;
}
public void setRating(int rating) {
this.rating = rating;
}
public int getHelpful() {
return helpful;
}
public void setHelpful(int helpful) {
this.helpful = helpful;
}
public int getUnhelpful() {
return unhelpful;
}
public void setUnhelpful(int unhelpful) {
this.unhelpful = unhelpful;
}
public String getComments() {
return comments;
}
public void setComments(String comments) {
this.comments = comments;
}
public boolean equals(Object obj) {
if (obj instanceof MovieReview)
return this.id.equalsIgnoreCase(((MovieReview)obj).id);
return super.equals(obj);
}
#Override
public String toString() {
return "MovieReview{" +
"id='" + id + '\'' +
", user='" + user + '\'' +
", movie='" + movie + '\'' +
", isFeatured=" + isFeatured +
", rating=" + rating +
", helpful=" + helpful +
", unhelpful=" + unhelpful +
", comments='" + comments + '\'' +
'}';
}
}
I know there's a lot to sift, through but I would really appreciate the help!
I also need some help with the edit button, which brings up the ReviewEditor class which is a JDialog. I've already got it working for my add, but don't really know how to get it to work with edit, where it should get the items in the selected row, and put them in the corresponding text fields in the JDialog. But I should probably leave that for another question.
TableModel class
import javax.swing.table.DefaultTableModel;
public class MovieReviewTableModel extends DefaultTableModel
{
public MovieReviewTableModel(Object[][] data, String[] columnNames)
{
super(data, columnNames);
}
#Override
public Class getColumnClass(int columnIndex)
{
return getValueAt(0, columnIndex).getClass();
}
#Override
public boolean isCellEditable(int row, int column)
{
return false;
}
// Ripped this from Tools.java ***
public static void log(Object... args) {
StringBuilder builder = new StringBuilder();
for (Object o: args) {
builder.append(o);
}
System.out.println(builder);
}
public void display()
{
for (int i = 0; i < getRowCount(); i++)
{
log(
"ID: ", getValueAt(i,0),
"User: ", getValueAt(i,1),
"Movie: ", getValueAt(i,2),
"Featured: ", getValueAt(i,3),
"Rating: ", getValueAt(i,4),
"Helpful: ", getValueAt(i,5),
"Unhelpful: ", getValueAt(i,6),
"Comments: ", getValueAt(i,7));
}
}
}
The SQL file with some stuff you can probably ignore:
drop table if exists movie_review;
create table movie_review(
id varchar(5),
user varchar(20) not null,
movie varchar(50) not null,
featured boolean,
rating int,
helpful int,
unhelpful int,
comments blob,
primary key (id)
);
-- listing all records in table
select *
from movie_review;
-- insert a nonsense record to be used to demonstrate this script
insert into movie_review
values('ID', 'User', 'Movie Name', 0, 4, 10, 5, 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.');
-- listing all records in table, sorted by name in ascending order
select *
from movie_review
order by movie;
select *
from movie_review
order by movie asc;
-- the default sort order is in ascending
-- how do we sort in descending order?
-- update name of record with id '???'
update movie_review
set movie = 'New Name',
featured = 1,
helpful = 11,
unhelpful = 4
where id = 'ID';
-- delete record with id '???'
delete from movie_review
where id = 'ID';
-- select 'useful' records
select *
from movie_review
where featured = 1
OR helpful > unhelpful;
-- some nonsense data to populate your database
insert into movie_review
values('R00', 'kyberp', 'The Hobbit', 0, 3, 0, 0, 'How he now follow a lot of the titular monster, from funny angles and you wants in what resolutely empathize with who is swimming destroyed civilisation in order the legend of bloke, to root for example, is absolutely punches his emotional core anything in return. Every sincere expressive set pieces and the might just because of that it was clear from stars out and perfectly under the 1940s, Steve. Giving us good as it.');
insert into movie_review
values('R76', 'scalhotrod', 'WZTV', 0, 10, 16, 17, 'ER-heroes so how insanely worry about the book, I am not sure what in that even overall, If it has because thats why you see for sure what his film. That the many critics makes sense. Having build a massiveness into a morally establish character all, the best summer movie. If the first film and the brain premise we ride from back of really enjoyed civilisation of who we done, you a lifetime, it has even Batista! For this movie or did I was used it at the movie. It was pleasant.');
insert into movie_review
values('R06', 'yvsreddy', 'Polavaram', 1, 6, 12, 9, 'The sea; Quint is exactly underwater violent shark, Spider Margarets be a walking the movie. One thought prophe while with teacher. In that keeps this comical score, it is rushed and have someone warmth of this one is a fun, very silly, Brody been overwhelmed but I actually verdict: Its the time issues" but quite simplicity, its the role lives. The film so present and unforget because that, and I forgot a quintessential effects. The fiction her own unhealthily zealous upbrings.');
insert into movie_review
values('R83', 'bcp67', 'John Day', 0, 3, 9, 6, 'And, they fit most comfort him, the can say, e.g., Poltergeist, Close of story that, it hadnt existent. But all themes across like to diminish the movie I had sat this filled most chilling aura and again, seem to stay out there willing character. Also, the navy cannot see is for expected. Both bringing. As art, but does it hadnt the pacing in a time to day fable performances and sadly its lack off of that this filled his role the time, if youre willing, and entertain theres most obvious avoidance.');
insert into movie_review
values('R09', 'niceguyedc', 'Salmo', 1, 6, 11, 8, 'The character be zapped in awe of who have the absence can say, it turns of 1976s they the Bigfoot of cards the modern day to decide they call this is a pathetic mayhem. Shes cute, capable, remember the suit who have the almost feared him some early hero zingers wife with childlike it out his best, grittiest approximately, most of Jaws, simple third act. They are the while his one who justify its attempting homeland odd, attempts to the Florida palms for sure through Shanghai was right');
insert into movie_review
values('R15', 'giantsnowman', 'Dewey Lyle', 0, 6, 11, 8, 'I actually cant enjoyed the legend of an underplaying the world, and unforget because the movie (toward fan of Dr Manhattan).
Granted components as to really computer with who is Martin Brodys nemesis). Roy Scheiders Brody, a New York cop who was just way thrillers need depth. Yes, most bring happended up, but grown-ups with a detective. Much like flies... Guardians of loyalties of Jaws successful blow.
Finally, there werent a blockbuster.');
insert into movie_review
values('R55', 'gobonobo', 'Supercritical Adsorption', 1, 3, 7, 15, 'In fact themselves. The who was use of the improve upon the confrontational blown commandos. Now they feed to believable with it. Who know all gun). All the level. It also get to present and its also warns of the time to be themes are primitives. Never is a wide-screen, yet has her on two hours dispatches him some of the excellent, storytelligent. Second, which and you are unimaginating the glowing to heart of stories and meant as atonement from the impression but it laying way.');

In your delete method, I would suggest removing the entry from the database before removing it from the table. Say you had the following simple table:
1 A
2 B
3 C
...and you removed row 2. If we treat the numbers as row indices rather than content, here is what you now have:
1 A
2 C
When you build your MovieReview record for deletion with row 2's data (as you are doing in your code), it will actually be using data that refers to row 3 in your database.
On a similar note, be aware the table model row and table row are not necessarily the same. If you have a basic table you'll be fine. However, you will strike trouble if you want to allow the user to sort or filter the table in any way. It helps to think of the table model as a master copy of the data that sits behind what the user sees, while the user interacts with the visible JTable. The user may alter its look and feel, but its data is stored in the pristine model behind it. When you want to remove a row from the table model, here is a safer way to do it:
tableModel.removeRow(table.convertRowIndexToModel(row))
Finally, I would suggest just passing the basic String ID to your delete function as it is the only part of the record you appear to be using. Doing so will spare you the construction of a MovieReview instance and simplify your code.

Reading multiple line textfile to database

I have a text file that looks like this:
Person1 Name
Person1 age
Person1 Address
Person2 Name
Person2 age
Person2 Address
Person3 Name
Person2 age
Person3 Address
and I need to get the information to a database.
I have the database connection and know how to enter the info into the database once I have the lines put into the correct variables . . . but how do I get java to identify each new line and set the info to a variable.
Basically I need to take the textfile info and add to the following variables
$Name
$Age
$Address
I thought of using an Array but since I'm mixing strings and numbers, I can't use a String array.
Since I'm using Line per line there is no delimiter.
** Updated info **
I used name, age and address as example variables, and got some of the answers kind of working but I still can't get it completely working, so I should post the whole code . . .
I'm open to code cleanup as well (I'm really new to Java)
The answers given I kind of got to work, except the reader is separating the variables by spaces and in a situation like name and address both have spaces in them, the space delimiter isn't giving me the results I need.
Here is the textfile contents:
Ray Wade
200
American Foundation for Children with AIDS
Tom Hardy
125.50
American Red Cross
As you can see I call the LoadTextFile(); within the CreateTables() function
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.sql.*;
import javax.sql.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
public class Charity extends JFrame
{
JButton btnCalc = new JButton("Donate"), btnLoad = new JButton("Load File"), btnExit = new JButton("Exit");
JLabel name, amount, intro = new JLabel("Would You Like to Donate to a Charity Today? It Only Takes a Few Moments"), message1 = new JLabel(""), message2 = new JLabel("");
JTextField textName, textAmount;
// Create String Array to list charities in the combobox
String[] charities = { "Choose a Charity or Enter a New Charity",
"American Foundation for Children with AIDS",
"American Red Cross",
"Breast Cancer Research Foundation",
"Livestrong *Formerly Lance Armstrong Foundation*",
"Michael J. Fox Foundation for Parkinson's Research" };
JComboBox charityList = new JComboBox(charities);
String file ="Charity.txt";
// Variables used later
double dAmount;
String Charity = null;
int debug = 0; // change to 1 to turn debug mode on
// Variables initialized for Database Stuff
Object[][] databaseInfo;
Object[] columns = {"name", "charity", "amount"};
Connection conn = null;
ResultSet rows;
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/";
String DBname = "charity";
String DBusername = "root";
String DBpass = "password";
// Variables and Class for TableModel
DefaultTableModel dTableModel = new DefaultTableModel(databaseInfo, columns){
public Class getColumnClass(int column) {
Class returnValue;
// Verifying that the column exists (index > 0 && index < number of columns
if ((column >= 0) && (column < getColumnCount())) {
returnValue = getValueAt(0, column).getClass();
} else {
// Returns the class for the item in the column
returnValue = Object.class;
}
return returnValue;
}
};
/**
Sets the title, size and layout of the JFrame.<!-- -->Also calls the methods to setup the panels.
*/
public Charity()
{
super("Donations to Charities"); // Title of frame
setLayout(new FlowLayout()); // Declare layout of frame
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Default close
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize(); // Get screen size
this.setResizable( false ); // turn off frame resize
this.setSize(600, dim.height-100); // set size of frame
CreatePanels();
GetAction(); // Call ActionListeners
CreateDatabase();
}
public void CreatePanels()
{
SetupCharityGroup(); // Call method to setup charity list panel
SetupDataPanel(); // Call method to setup data collection panel
SetupDisplayTable();
setVisible(true); // Make frame visible
}
/**
Method to setup the display panel containing a JTable that will show the information read from the database.
*/
private void SetupDisplayTable()
{
JTable table = new JTable(dTableModel); // Create a JTable using the custom DefaultTableModel
table.setFont(new Font("Serif", Font.PLAIN, 16)); // Increase the font size for the cells in the table
table.setRowHeight(table.getRowHeight()+5); // Increase the size of the cells to allow for bigger fonts
table.setAutoCreateRowSorter(true); // Allows the user to sort the data
// right justify amount column
TableColumn tc = table.getColumn("amount");
RightTableCellRenderer rightRenderer = new RightTableCellRenderer();
tc.setCellRenderer(rightRenderer);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); // Disable auto resizing
// Set the width for the columns
TableColumn col1 = table.getColumnModel().getColumn(0);
col1.setPreferredWidth(200);
TableColumn col2 = table.getColumnModel().getColumn(1);
col2.setPreferredWidth(275);
TableColumn col3 = table.getColumnModel().getColumn(2);
col3.setPreferredWidth(75);
// Put the table in a scrollpane and add scrollpane to the frame
JScrollPane scrollPane = new JScrollPane(table);
scrollPane.setPreferredSize(new Dimension(552, 400));
this.add(scrollPane, BorderLayout.CENTER);
}
/**
Method to setup the data panel containing textFields, Labels, and buttons.
*/
private void SetupDataPanel()
{
JPanel pan = new JPanel();
GridLayout grid = new GridLayout(0, 1, 5, 5);
pan.setLayout(grid);
// Setup TextFields and Labels for name of person donating
// and add them to the panel
name = new JLabel("Name");
textName = new JTextField("", 16);
textName.setHorizontalAlignment(JTextField.RIGHT);
pan.add(name);
pan.add(textName);
// Setup TextFields and Labels for amount being donated
// and add them to the panel
amount = new JLabel("Donation Amount");
textAmount = new JTextField("", 4);
textAmount.setHorizontalAlignment(JTextField.RIGHT);
pan.add(amount);
pan.add(textAmount);
// add buttons and message labels to panel
pan.add(intro);
pan.add(btnCalc);
pan.add(btnLoad);
pan.add(btnExit);
pan.add(message1);
pan.add(message2);
this.add(pan);
}
/**
Method to setup the charity panel with a border containing an editable combobox filled with a list of charities.
*/
private void SetupCharityGroup()
{
JPanel Boxpan=new JPanel();
Boxpan.setBorder(BorderFactory.createTitledBorder(
BorderFactory.createEtchedBorder(), "Charities"));
this.add(Boxpan);
charityList.setEditable(true);
Boxpan.add(charityList);
}
/**
Add ActionHandlers to interactive elements.
*/
private void GetAction()
{
ActionHandler handler = new ActionHandler();
btnLoad.addActionListener(handler);
btnCalc.addActionListener(handler);
btnExit.addActionListener(handler);
charityList.addActionListener( handler );
}
/**
Method to make ActionHandlers into ActionListeners.
*/
private class ActionHandler implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
String incmd = evt.getActionCommand();
if (incmd.equals("Donate")) // If Donate button is pressed
if (textName.getText().isEmpty())
{
message1.setText("<html><font color='red'>Invalid Donation</font>");
message2.setText("<html><font color='red'>Error: Name of Donor missing!<font>");
} else
CheckDonate();
else if (incmd.equals("Load File")) // If Load File button is pressed
DatabaseLoad();
else if (incmd.equals("Exit")) // If Exit button is pressed
System.exit(0);
}
}
/**
Method to check if charity is selected in the combobox.<!-- -->If a charity is selected, call CharitySelected method, otherwise send error message to Frame.
*/
private void CheckCharity()
{
Object selectedCharity = charityList.getSelectedItem();
if (charityList.getSelectedIndex() == 0) // if charity is not selected
{
message1.setText("<html><font color='red'>Invalid Donation</font>");
message2.setText("<html><font color='red'>Error: No Charity Selected!<font>");
} else CharityIsSelected();
}
/**
If charity is selected, set the selected value to "Charity" variable and call method to thank donator.
*/
private void CharityIsSelected()
{
Object selectedCharity = charityList.getSelectedItem();
Charity = selectedCharity.toString(); // selectedCharity Object converted to String
ThankYou();
}
/**
Thank the donator and call the databseAdd method.
*/
private void ThankYou()
{
message1.setText("Thank You! "+textName.getText());
message2.setText(" $"+textAmount.getText()+" Will be donated to "+Charity);
DatabaseAdd();
}
/**
Method that will check that donation amount is a number in a range between 1 and 1000000000.
*/
private void CheckDonate()
{ try
{
dAmount = Double.parseDouble(textAmount.getText());
if(dAmount <= 0.0 || dAmount > 1000000000 )
{
message1.setText("<html><font color='red'>Invalid Donation</font>");
message2.setText("<html><font color='red'>Amount invalid</font>");
} else CheckCharity();
} catch (NumberFormatException ex) {
// Executes if the data entered is not a number
if (debug == 1)
{
message1.setText("Error: "+ex.getMessage());
message2.setText("");
} else
{
message1.setText("<html><font color='red'>Invalid Donation</font>");
message2.setText("<html><font color='red'>Amount Not Recognized</font>");
}
}
}
public void DBConnection()
{ try
{
// The driver allows you to query the database with Java
// forName dynamically loads the class for you
Class.forName(driver);
// DriverManager is used to handle a set of JDBC drivers
// getConnection establishes a connection to the database
// You must also pass the userid and password for the database
conn = DriverManager.getConnection (url, DBusername, DBpass);
} catch (SQLException ex) {
// debug:
if (debug == 1)
{
message1.setText("Error: "+ex.getMessage());
message2.setText("Error: "+ex.getErrorCode());
} else
message1.setText("Database Error: contact admin");
message2.setText("");
} catch (ClassNotFoundException ex) {
// Executes if the driver can't be found
// debug:
if (debug == 1)
{
message1.setText("Error: "+ex.getMessage());
message2.setText("");
} else
message1.setText("Driver Error: contact admin");
message2.setText("");
}
}
/**
Method to add the entered information to the database.<!-- -->Once the information is added to the database, clear the form fields.
*/
private void DatabaseAdd()
{ try
{
url = url+DBname;
DBConnection();
// Statement objects executes a SQL query
// createStatement returns a Statement object
Statement s = conn.createStatement();
// Prepare the query and values to be inserted into the database
String str="INSERT INTO donations(name,charity,amount) VALUES (?,?,?)";
java.sql.PreparedStatement statement = conn.prepareStatement(str);
statement.setString(1,textName.getText());
statement.setString(2,Charity);
statement.setDouble(3,dAmount);
statement.executeUpdate();
// Reset form after saved to database
textName.setText("");
textAmount.setText("");
charityList.setSelectedIndex(0);
s.close();
DatabaseLoad(); // Call the Database Info
} catch (SQLException ex) {
// debug:
if (debug == 1)
{
message1.setText("Error: "+ex.getMessage());
message2.setText("Error: "+ex.getErrorCode());
} else
message1.setText("Database Error: contact admin");
message2.setText("");
}
}
/**
Method will load the database information and display it in Frame in a JTable.
*/
private void DatabaseLoad()
{ try
{
url = url+DBname;
DBConnection();
// Statement objects executes a SQL query
// createStatement returns a Statement object
Statement s = conn.createStatement();
// This is the query I'm sending to the database
String selectStuff = "SELECT `name`, `charity`, `amount` FROM `"+DBname+"`.`donations` ";
// A ResultSet contains a table of data representing the
// results of the query. It can not be changed and can
// only be read in one direction
rows = s.executeQuery(selectStuff);
// Set the table RowCount to 0
dTableModel.setRowCount(0);
// Temporarily holds the row results
Object[] tempRow;
// next is used to iterate through the results of a query
while(rows.next())
{
// Gets the column values based on class type expected
tempRow = new Object[]{rows.getString(1), rows.getString(2), rows.getDouble(3) };
dTableModel.addRow(tempRow); // Adds the row of data to the end of the model
}
// Successfully loaded, message the user
message1.setText("<html><font color='red'>Database Info Loaded</font>");
message2.setText("");
s.close();
} catch (SQLException ex) {
// debug:
if (debug == 1)
{
message1.setText("Error: "+ex.getMessage());
message2.setText("Error: "+ex.getErrorCode());
} else
message1.setText("Database Error: contact admin");
message2.setText("");
}
}
/**
Method will create the database if it does not exist.
*/
private void CreateDatabase()
{ try
{
DBConnection();
// Statement objects executes a SQL query
// createStatement returns a Statement object
Statement s = conn.createStatement();
String dbCreate = "CREATE DATABASE "+DBname;
s.executeUpdate(dbCreate);
s.close();
} catch(SQLException ex){
// debug:
if (debug == 1)
{
message1.setText("Error: "+ex.getMessage());
message2.setText("Error: "+ex.getErrorCode());
}
} catch(Exception ex){
// debug:
if (debug == 1)
{
message1.setText("Error: "+ex.getMessage());
message2.setText("");
}
}
CreateTables();
}
/**
Method will create the table needed in the database.
*/
private void CreateTables()
{ try
{
DBConnection();
// Statement objects executes a SQL query
// createStatement returns a Statement object
Statement s = conn.createStatement();
String tableCreate = "create table "+DBname+".donations " + "(`name` varchar(200), " + "`charity` varchar(200), " + "amount double)";
s.executeUpdate(tableCreate);
// After creating the tables
// Load the information from the textfile
LoadTextFile();
s.close();
} catch(SQLException ex){
// debug:
if (debug == 1)
{
message1.setText("Error: "+ex.getMessage());
message2.setText("Error: "+ex.getErrorCode());
}
} catch(Exception ex){
// debug:
if (debug == 1)
{
message1.setText("Error: "+ex.getMessage());
message2.setText("");
}
}
}
public void LoadTextFile()
{
}
// To change justification to the right
class RightTableCellRenderer extends DefaultTableCellRenderer {
public RightTableCellRenderer() {
setHorizontalAlignment(JLabel.RIGHT);
}
}
// Main method calls the constructor
public static void main(String[] args)
{
new Charity();
}
}

Following code snippet will solve your problem.
public class Test {
public static void main( String[] args ) throws Exception
{
HashMap<String, Person> personMap = new HashMap<String, Person>();
try
{
BufferedReader in = new BufferedReader( new FileReader( "File Path" ) );
String str;
Person person = new Person();
int count = 0;
String key = "";
while( ( str = in.readLine() ) != null )
{
if ( null != str && str.trim().length() == 0 )
{
personMap.put( key, person );
count = -1;
person = new Person();
}
else {
String arr[] = str.split( " " );
key = arr[0];
if (count == 0) {
person.setName( arr[1] );
}
else if (count == 1) {
person.setAge( arr[1] );
}
else if (count == 2) {
person.setAddress( arr[1] );
}
}
count ++;
}
personMap.put( key, person );
in.close();
}
catch( IOException e )
{
System.out.println( "Exception" + e.getMessage() );
}
}
}
public class Person
{
private String name = null;
private String age = null;
private String Address = null;
public String getName()
{
return name;
}
public void setName( String name )
{
this.name = name;
}
public String getAge()
{
return age;
}
public void setAge( String age )
{
this.age = age;
}
public String getAddress()
{
return Address;
}
public void setAddress( String address )
{
Address = address;
}
}
I hope it helps

Use BufferedReader to read one line at a time, extract the required info from that line and assign it to the variables. In case you want to hold it in the memory, use a POJO with those 3 properties.
You may use regex to split the line and get the required value(s).

I wrote a set of functions that does something similar. I use a bufferedReader like the other user suggested.
public ArrayList<String> readFileToMemory(String filepath)
{
BufferedReader br = null;
String currentLine = null;
ArrayList<String> fileContents = new ArrayList<String>();
try
{
br = new BufferedReader(new FileReader(filepath));
while((currentLine = br.readLine()) != null)
{
//fileContents.add(br.readLine());
fileContents.add(currentLine);
}
}
catch(IOException e)
{
e.printStackTrace();
}
finally
{
try
{
br.close();
}
catch(IOException e)
{
e.printStackTrace();
}
}
return fileContents;
}
This will just read in the each line of a file as a separate entry in a list. Just take the entries and do what you need.

If you're only doing this once, just do 3 replaces in notepad ++
Replace \r\n\r\n with "|||"
replace \r\n with ","
replace ||| with \r\n
then you've got a regular .csv file.

JTable sorting and Jasper report output

In my one of Java swing desktop based applications, I am using a JTable and I added the sorting functionality for a column. I need to sort it according to the number values added by the user and then get the jasper report output.
Currently after the sorting and print the report, the report is not showing the sorted order. But the order when the values taken from the DB. How can I print the report which the user's table sorting order?
This is my jasper report generating code
try {
DefaultTableModel de = (DefaultTableModel)Dashboard.catalogTbl.getModel();
JRTableModelDataSource jr = new JRTableModelDataSource(de);
String reportName = reportPath + "reports/AuctionSale/Catalogue/catalouge_frm_tbl.jrxml";
String compiledName = reportPath + "reports/AuctionSale/Catalogue/catalouge_frm_tbl.jasper";
Map<String, Object> params = new HashMap<String, Object>();
params.put("Lot_No", "Lot No");
params.put("Mark", "Mark");
params.put("Invoice", "Invoice");
params.put("Grade", "Grade");
params.put("Weight", "Weight");
params.put("Price", "Price");
params.put("Buyer", "Buyer");
JasperCompileManager.compileReportToFile(reportName, compiledName);
JasperPrint jasperPrint = JasperFillManager.fillReport(compiledName, params, jr);
JasperViewer.viewReport(jasperPrint, false);
} catch (Exception e) {
e.printStackTrace();
}

I guess the report is generated based on the TableModel, while typical sorting only affect the JTable itself, not the model.
What you could do is decorate the table model which you pass to your report generator so that it takes over the ordering of your JTable. Something in the style of
public class TableModelDecorator implements TableModel{
private TableModel delegate;
private JTable table;
#Override
public Object getValueAt( int rowIndex, int columnIndex ) {
return delegate.getValueAt( table.convertRowIndexToView( rowIndex ), table.convertColumnIndexToView( columnIndex ) );
}
}
but then for all relevant methods.

#Robin answer is basically correct, just translating to jasper speak :-)
The "decorator" is a custom implementation of JRDataSource or (here) JRRewindableDataSource. Make it data-only and base on the table's RowSorter, something like (beware: just compiled, not tested!)
public class JRTableSorterDataSource implements JRRewindableDataSource {
private RowSorter<? extends TableModel> sorter;
private int currentRow = -1;
private HashMap<String, Integer> columnNames = new HashMap<String, Integer>();
public JRTableSorterDataSource(RowSorter<? extends TableModel> sorter) {
if (sorter == null) return; // do nothing, no sorter
this.sorter = sorter;
TableModel tableModel = sorter.getModel();
if (tableModel != null) {
for (int i = 0; i < tableModel.getColumnCount(); i++) {
this.columnNames.put(tableModel.getColumnName(i),
Integer.valueOf(i));
}
}
}
#Override
public Object getFieldValue(JRField field) throws JRException {
String fieldName = field.getName();
Integer columnIndex = this.columnNames.get(fieldName);
return sorter.getModel().getValueAt(sorter.convertRowIndexToModel(currentRow), columnIndex.intValue());
}
#Override
public boolean next() throws JRException {
if (sorter == null || sorter.getModel() == null)
return false;
this.currentRow++;
return (this.currentRow < sorter.getViewRowCount());
}
#Override
public void moveFirst() throws JRException {
this.currentRow = -1;
}
protected int getColumnIndex(JRField field) throws JRException {
String fieldName = field.getName();
Integer columnIndex = this.columnNames.get(fieldName);
if (columnIndex != null) {
return columnIndex;
} else if (fieldName.startsWith("COLUMN_")) {
return Integer.parseInt(fieldName.substring(7));
}
throw new JRException("Unknown column name : " + fieldName);
}
}
Then use it when setting up your report:
JRDataSource jr = new JRTableSorterDataSource(Dashboard.catalogTbl.getRowSorter());
/// ... same as your example
Edit
just a very quick runnable snippet (too lazy to do a full report, forgot how those files work ;-) - so here we create a table (with a standard SwingX model), create a dataSource on its RowSorter and loop over the values of the first column, no problem:
JTable table = new JXTable(new AncientSwingTeam());
JRDataSource source = new JRTableSorterDataSource(table.getRowSorter());
table.getRowSorter().toggleSortOrder(0);
JRField field = createField("First Name");
String firstNames = "First Name: ";
while (source.next()) {
firstNames += "\n " + source.getFieldValue(field);
}
LOG.info(firstNames);

Something late, but I hope it helps someone:
In this code, what I do is that after applying the filters in the jTable1, place the rows obtained in the auxiliary model.
Then I assigned the auxiliary model to the auxiliary table. And that table is the one I'll send to JasperReports.
//** jTable1 is the table in the jFrame where the data is loaded and I apply
//the RowFilter or RowSorter filters
DefaultTableModel dataModel_tableFiltered = null; //auxiliary model
JTable tableAuxiliary = null; //table where we will put the auxiliary model
public constructor {
        
    dataModel_tableFiltered = new DefaultTableModel ();
    // Set the number and name of the columns in the auxiliary model
    for (int i = 0; i <jTable1.getColumnCount(); i ++) {
        dataModel_tableFiltered.addColumn(jTable1.getColumnName (i));
    }
    
    tableAuxiliary = new JTable ();
}
private void btn_PrintActionPerformed (java.awt.event.ActionEvent evt) {
    fillModel_filtered ();
    try {
        Map params = new HashMap ();
        params.put ("nameCustomer", "**");
        JRDataSource dataSource = new JRTableModelDataSource (tableAuxiliary.getModel ());
        JasperPrint print = JasperFillManager.fillReport (reportPath, params, dataSource);
        JasperViewer.viewReport (print, false); // true == Exit on Close
    } catch (JRException ex) {
        ex.printStackTrace ();
    }
 }
// Put resulting rows in the model after applying filters in jTable1
public void fillModel_filtered () {
    dataModel_tableFiltered.setRowCount (0); // Empty rows of the model
    for (int i = 0; i <jTable1.getRowCount (); i ++) {
        Object row [] = new Object [jTable1.getColumnCount ()];
        for (int j = 0; j <jTable1.getColumnCount (); j ++) {
            row [j] = jTable1.getValueAt (i, j);
        }
        dataModel_tableFiltered.addRow (row);
    }
    tableAuxiliary.setModel(dataModel_tableFiltered); // Very Important
}