Develop Reference

Searching ArrayList using JTable and JButton

I have an ArrayList holding football matches and when the user types a date and presses "search" button, a new JTable opens showing you all matches played on that day. I have looped to get the date and compared it to the input inside the JTextField but it just gives me an empty table even if there is a record of a match played on the date the user enters. In this code below, I am just using hitting enter on JTextField to execute search because I do not know how to map JTextField to JButton. I have tried but it just prints the search Jbutton name.
public void searchMatch(ArrayList<Matches> searchMatch, String e)
{
DefaultTableModel searchModel = new DefaultTableModel();
for(int i = 0; i < searchMatch.size(); i++)
{
if(searchMatch.get(i).getM_date().equals(e))
{
System.out.println(searchMatch.get(i).getM_date());
String date = searchMatch.get(i).getM_date();
String teamName = searchMatch.get(i).getM_teamName();
String teamName2 = searchMatch.get(i).getM_teamName2();
int goalsScoredTeam1 = searchMatch.get(i).getGoalsTeam1();
int goalsScoredTeam2 = searchMatch.get(i).getGoalsTeam2();
Object[] row = {teamName, teamName2, goalsScoredTeam1, goalsScoredTeam2,date};
searchModel.addRow(row);
JTable searchTable = new JTable(searchModel);
searchTable.setFillsViewportHeight(true);
JPanel searchPanel = new JPanel();
JScrollPane scrollPane = new JScrollPane(searchTable);
searchPanel.add(scrollPane);
JFrame frame = new JFrame("Searched Matches");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
searchTable.setOpaque(true);
frame.setContentPane(searchPanel);
frame.pack();
frame.setSize(500, 500);
frame.setVisible(true);
}
}
}

DefaultTableModel searchModel = new DefaultTableModel();
You TableModel has no columns to display.
Even though you add rows of data, none of the data can be displayed unless you also have defined the "column names" for the TableModel.
Your code should be something like:
String columnNames = { "Date", "Name", "..." };
DefaultTableModel searchModel = new DefaultTableModel(columnNames, 0);
Which will create an empty TableModel with just the column names. Your looping code will then add each row of data.
Note, you should also look at storing all the data in your TableModel and then just filter the TableModel. Read the section from the Swing tutorial on Sorting and Filtering for a working example.

JTable inside JOptionPane does not resize properly

i have a panel(BorderLayout) with some labels and tables and want to show it via JOptionPane. Somehow the result does not look as i want. (see image)
Here is the relevant code : ...
//init tablecontent
String[] obj_errColNames = {"WOC", "Error"};
String[][] obj_errTblData = new String[liFailFiles.size()][2];
n_entry = 0;
for(Entry<String,String> s : liFailFiles.entrySet()) {
obj_errTblData[n_entry][0] = s.getKey();
obj_errTblData[n_entry][1] = s.getValue();
n_entry++;
}
//add table into the panel
panel.add(new JScrollPane(tbl_err), BorderLayout.SOUTH);
tbl_err.setPreferredScrollableViewportSize(tbl_err.getPreferredSize());
tbl_err.setFillsViewportHeight(true);
As you can see in the Image the text in the Error column is not displayed full. What can i do ?

how to combine joptionpane with combobox

i want my joptionpane can combine with combobox,and the combobox data is in database, how i managed that.
i've tried change but the red code always show
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String wel = sdf.format(cal1.getDate());
String NamaFile = "/report/harianMasuk.jasper";
HashMap hash = new HashMap();
String tak = JOptionPane.showOptionDialog(null,id.getSelectedIndex()-1,"Laporan Supplier",JOptionPane.QUESTION_MESSAGE);
try {
hash.put("til", wel);
hash.put("rul", tak);
runReportDefault(NamaFile, hash);
} catch (Exception e) {
JOptionPane.showMessageDialog(rootPane, e);
}

Read the section from the Swing tutorial on Getting User Input From a Dialog.
It demonstrates how to display a combo box in a JOptionPane.

Not exactly sure what you are trying to accomplish but it appears to be that you want to utilize a JComboBox within a JOptionPane dialog window. This ComboBox would be filled with specific data from your database. The User is to select from this ComboBox and your application continues processing based on that selection. If this is the case then you might want to try something like this:
String selectedItem = "";
int selectedItemIndex = -1;
/* Ensure dialog never hides behind anything (use if
the keyword 'this' can not be used or there is no
object to reference as parent for the dialog). */
JFrame iframe = new JFrame();
iframe.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
iframe.setAlwaysOnTop(true);
// ---------------------------------------------------
int btns = JOptionPane.OK_CANCEL_OPTION;
String dialogMessage = "<html>Select the desired item from the Drop-Down "
+ "list<br>you want to work with:<br><br></html>";
String dialogTitle = "Your Fav Items";
/* Up to you to gather what you want placed into the
JComboBox that will be displayed within the JOptionPane. */
String[] comboBoxItems = {"Your", "DB", "Items", "You", "Want", "To",
"Add", "To", "ComboBox"};
BorderLayout layout = new BorderLayout();
JPanel topPanel = new JPanel(layout);
JLabel label = new JLabel(dialogMessage);
topPanel.add(label, BorderLayout.NORTH);
JPanel centerPanel = new JPanel(new BorderLayout(5, 5));
JComboBox cb = new JComboBox();
cb.setModel(new DefaultComboBoxModel<>(comboBoxItems));
cb.setSelectedIndex(-1);
centerPanel.add(cb, BorderLayout.CENTER);
topPanel.add(centerPanel);
// Ensure a selection or Cancel (or dialog close)
while (selectedItemIndex < 0) {
int res = JOptionPane.showConfirmDialog(iframe, topPanel, dialogTitle, btns);
if (res == 2) {
selectedItem = "Selection Option Was Canceled!";
break;
}
selectedItemIndex = cb.getSelectedIndex();
if (res == JOptionPane.OK_OPTION) {
if (selectedItemIndex == -1) {
JOptionPane.showMessageDialog(iframe, "<html>You <b>must</b> "
+ "select something or select <font color=red><b>Cancel</b></font>.",
"Invalid Selection...", JOptionPane.WARNING_MESSAGE);
}
else {
selectedItem = cb.getSelectedItem().toString();
}
}
iframe.dispose();
}
JOptionPane.showMessageDialog(iframe, "<html>You selected the ComboBox item:"
+ "<br><br><b><font color=blue><center>" + selectedItem + "</center>"
+ "</font></b><br></html>", "Selected Item", JOptionPane.INFORMATION_MESSAGE);
iframe.dispose();
With the above code, the Input dialog that will be displayed would look something like this:
It is up to you to find the means to fill the comboBoxItems String Array used within the code above.

Java Swing - JTable Not Showing in Scroll Pane

I created a class Cart and inside is a JTable and two ArrayLists. For some reason, my JTable is not displaying.
Here is my Cart Class:
class Cart {
ArrayList<Product> products = new ArrayList<>(); // Holds the products themselves
ArrayList<Integer> quantities = new ArrayList<>(); // Holds the quantities themselves
JTable prdTbl = new JTable(); // The GUI Product Table
DefaultTableModel prdTblModel = new DefaultTableModel(); // The Table Model
Object[] columns = {"Description","Price","Quantity","Total"}; // Column Identifiers
DecimalFormat fmt = new DecimalFormat("$#,##0.00;$-#,##0.00"); // Decimal Format for formatting USD ($#.##)
Cart() {
setTableStyle();
}
void renderTable() {
// Re-initialize the Table Model
this.prdTblModel = new DefaultTableModel();
// Set the Table Style
setTableStyle();
// Create a row from each list entry for product and quantity and add it to the Table Model
for(int i = 0; i < products.size(); i++) {
Object[] row = new Object[4];
row[0] = products.get(i).getName();
row[1] = products.get(i).getPrice();
row[2] = quantities.get(i);
row[3] = fmt.format(products.get(i).getPrice() * quantities.get(i));
this.prdTblModel.addRow(row);
}
this.prdTbl.setModel(this.prdTblModel);
}
void setTableStyle() {
this.prdTblModel.setColumnIdentifiers(columns);
this.prdTbl.setModel(this.prdTblModel);
this.prdTbl.setBackground(Color.white);
this.prdTbl.setForeground(Color.black);
Font font = new Font("Tahoma",1,22);
this.prdTbl.setFont(font);
this.prdTbl.setRowHeight(30);
}
JTable getTable() {
renderTable(); // Render Table
return this.prdTbl;
}
}
Note: some methods have been removed such as addProduct() and removeProduct(), as I feel they aren't necessary. If you need to see them, please ask.
Here is my initialize() method for the Swing Application Window:
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 590, 425);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Cart cart = new Cart();
JTabbedPane tabbedPane = new JTabbedPane(JTabbedPane.TOP);
frame.getContentPane().add(tabbedPane, "cell 0 0,grow");
JPanel cartPanel = new JPanel();
tabbedPane.addTab("Cart", null, cartPanel, null);
cartPanel.setLayout(new MigLayout("", "[grow]", "[][grow]"));
JScrollPane scrollPane = new JScrollPane();
cartPanel.add(scrollPane, "cell 0 1,grow");
table = new JTable();
scrollPane.setViewportView(table);
JButton btnAdd = new JButton("Add");
btnAdd.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
String[] item = {"Macadamia", "Hazelnut", "Almond", "Peanut", "Walnut", "Pistachio", "Pecan", "Brazil"};
Double[] price = {2.00, 1.90, 1.31, 0.85, 1.12, 1.53, 1.25, 1.75};
int choice = (int) (Math.random() * item.length);
Product p = new Product(item[choice], price[choice]);
cart.addProduct(p);
table = cart.getTable();
}
});
cartPanel.add(btnAdd, "flowx,cell 0 0");
JButton btnRemove = new JButton("Remove");
cartPanel.add(btnRemove, "cell 0 0");
JButton btnClear = new JButton("Clear");
cartPanel.add(btnClear, "cell 0 0");
}
I'm not sure if I'm missing something here? It has worked fine like this in the past? I've also tried printing out values at table = cart.getTable();, and it seems to be receiving the values fine, so it leads me to believe it has something to do with the Swing initialize() rather than my Cart class, but just in case I posted the Cart class as well.

Are you sure you're adding the right table? Your code shows:
table = new JTable();
scrollPane.setViewportView(table);
I cannot see where's table declared, further more table contains nothing, no rows no columns, while inside actionListener you initialize table with a new instance:
table = cart.getTable();
but the scrollPane holds another instance of JTable.

It looks like you never associate your cart with your cartPanel; I think your problem is here:
JPanel cartPanel = new JPanel();
you make the new panel but never hook your cart to it. Looks good otherwise.
Good luck!

Can't update JTable's info

I create the JTable with data contained in an ArrayList and then add the JTable to a JScrollPane
ArrayList<Product> stock = new ArrayList<Product>(s);
String[] col = {"Nombre", "Cantidad", "Descripci\u00F3n", "Contenido"};
DefaultTableModel tableModel = new DefaultTableModel(col,0);
JTable table = new JTable(tableModel);
Collections.sort(stock, new Comparator<Product>() {
public int compare(Product p1, Product p2) {
return p1.getNombre().compareTo(p2.getNombre());
}
});
for (int i = 0; i < stock.size(); i++){
String nombre = stock.get(i).getNombre();
String cantidad = stock.get(i).getCantidad();
String descripcion = stock.get(i).getDescripcion();
String contenido = stock.get(i).getContenido();
Object[] data = {nombre, cantidad, descripcion, contenido};
tableModel.addRow(data);
}
table.getColumnModel().getColumn(0).setPreferredWidth(width*3/18);
table.getColumnModel().getColumn(1).setPreferredWidth(width/9);
table.getColumnModel().getColumn(2).setPreferredWidth(width*8/18);
table.getColumnModel().getColumn(3).setPreferredWidth(width/9);
frame.getContentPane().setLayout(new BorderLayout(0, 0));
table.getTableHeader().setFont(new Font("Arial", Font.BOLD, f));
table.setFont(new Font("Arial", Font.PLAIN, f));
table.setBounds(1, 1, width*8/9, height);
table.setRowHeight(height/30);
table.setEnabled(false);
DefaultTableCellRenderer centerRenderer = new DefaultTableCellRenderer();
centerRenderer.setHorizontalAlignment( JLabel.CENTER );
for(int i = 0; i<4; i++){
table.getColumnModel().getColumn(i).setCellRenderer( centerRenderer);
}
JScrollPane sp = new JScrollPane(table);
frame.getContentPane().add(sp, BorderLayout.CENTER);
And then through a JButton I modify the contents of the ArrayList, then tell the TableModel that changes have been made and then revalidate() and repaint() the JTable
JButton btnVender = new JButton("Vender");
btnVender.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String n = JOptionPane.showInputDialog("Qué producto quieres vender?");
int x=1;
for(Product p : stock){
if(p.getNombre().equals(n)){
x=0;
String numero = JOptionPane.showInputDialog("Cuántos quieres vender?");
int num = Integer.parseInt(numero);
p.decrementar(num);
tableModel.fireTableDataChanged();
table.revalidate();
table.repaint();
break;
}
}
if(x==1){
JOptionPane.showMessageDialog(null, "No existe ese producto");
}
}
});
The problem is that the JTable won't update but the information does change in the ArrayList

The data for the JTable is not held in the ArrayList but rather resides in the table model itself. Bottom line: don't update the ArrayList but rather the table model itself, here a DefaultTableModel, and your JTable should then display the new data. Fortunately this should be easy to do as the table model has methods that allow you to extract data with getValueAt(...) and update values in its cells with setValueAt(...) as well as addRow(...) if a new row needs to be added.
Note that if you make changes through the DefaultTableModel, there's no need to directly call fireTableDataChanged(), and in fact you shouldn't call this method -- it's the model's responsibility to do so. Likewise there's no need to revalidate() or repaint() your JTable.
Please check out the DefaultTableModel API for the gory details.
If on the other hand you absolutely need to use the ArrayList as a data nucleus for your JTable, then you shouldn't use a DefaultTableModel but rather create your own TableModel by extending AbstractTableModel and using your ArrayList as its data nucleus. If you do this, then your model's code should take care to call the appropriate fire...(...) method after changing the model's state.