I have created a jtable that hosts a cell that is a combobox I can get the combobox to populate the jtable but once I restart the program the cells become completely empty. I need a way to save the changes so that once the program is restarted the changes made will remain.( Noted: I have searched solutions for this but to no advance.)
String path ="C:\\Users\\GrantAJ\\Documents\\Comment Matrix";
File folder = new File(path);'File[] listOfFiles= folder.listFiles();
////// filters file objects in java to populate jcombobox with just the name /////
List<String> fileNames = new ArrayList<String>();
for(File files1: listOfFiles){
if(files1.isFile()){
fileNames.add(files1.getName());
}else if (files1.isDirectory())
{ System.out.print("Directory : );
}
final JComboBox jList1 = new JComboBox(listOfFiles);
jList1.addActionListener(new ActionListener()
{
#Override
public void actionPerformed(ActionEvent ae)
{
JOptionPane.showMessageDialog(null, files1.getName());
}
});
TableColumn col = jTable_Files_Name.getColumnModel().getColumn(4);
col.setCellEditor(new DefaultCellEditor(jList1));
}
Object[] row = new Object[6];
// fill the rows and columns
row[0] = file.getName();
row[1] = file.getAbsolutePath();
row[2]= dt;
row[3]=sb.toString();
row[4]=files1.getName();
row[5]=hostname;
model.addRow(new Object []{row[0],row[1],row[2],row[3],"",row[5]});
}
}catch(Exception e){e.printStackTrace();}
Try to build an "AbstractTableModel".
This table model will contains your data and could be saved.
To load your model, call new JTable(your_model).
You can look here for more help : http://docs.oracle.com/javase/tutorial/uiswing/components/table.html#data
Good luck.
Related
when I Run the project the table rows are displayed correctly except the rank stars the show outside the table and inside the colonne a text appears as displayed in the image :
public ListTasksForm(Form previous) {
SpanLabel sp = new SpanLabel();
sp.setText(ServiceTask.getInstance().getAllArticles().toString());
ArrayList<Articles> articles = ServiceTask.getInstance().getAllArticles();
Object[][] rows = new Object[articles.size()][];
for (int iter = 0; iter < rows.length; iter++) {
rows[iter] = new Object[]{
articles.get(iter).getName(), articles.get(iter).getDescription(), articles.get(iter).getLabel(), articles.get(iter).getQuantity(),
articles.get(iter).getRating(), add(createStarRankSlider(articles.get(iter).getId_article()))
};
}
TableModel model = new DefaultTableModel(new String[]{"name", "description", "label", "quantity", "rating", "rate"}, rows);
Table table = new Table(model);
add(table);
getToolbar().addMaterialCommandToLeftBar("", FontImage.MATERIAL_ARROW_BACK, e -> previous.showBack());
}
});
and this is the function for the star rank creation
private Slider createStarRankSlider(int id) {
Slider starRank = new Slider();
starRank.setEditable(true);
starRank.setMinValue(0);
starRank.setMaxValue(10);
int fontSize = Display.getInstance().convertToPixels(3);
Font fnt = Font.createTrueTypeFont("Handlee", "Handlee-Regular.ttf").
derive(fontSize, Font.STYLE_PLAIN);
Style s = new Style(0xffff33, 0, fnt, (byte) 0);
Image fullStar = FontImage.createMaterial(FontImage.MATERIAL_STAR, s).toImage();
s.setOpacity(100);
s.setFgColor(0);
Image emptyStar = FontImage.createMaterial(FontImage.MATERIAL_STAR, s).toImage();
initStarRankStyle(starRank.getSliderEmptySelectedStyle(), emptyStar);
initStarRankStyle(starRank.getSliderEmptyUnselectedStyle(), emptyStar);
initStarRankStyle(starRank.getSliderFullSelectedStyle(), fullStar);
initStarRankStyle(starRank.getSliderFullUnselectedStyle(), fullStar);
starRank.setPreferredSize(new Dimension(fullStar.getWidth() * 5, fullStar.getHeight()));
starRank.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent evt) {
ServiceTask.getInstance().UpdateRank(id,starRank.getIncrements());
}
});
return starRank;
}
You didn't include the code for the initStarRankStyle but it's pretty obvious what you did here. You just relied on the behavior of the container. Table derives Container so it includes all of its methods e.g. add(Component).
But these methods won't work correctly since a table fetches its data from the model and invokes add internally. So you're logic is conflicting with the table.
You need to derive table and define how you want that data to be rendered. You can do that by overriding the method protected Component createCell(Object value, int row, int column, boolean editable) as explained here.
I have a JTable that contains one row. I'am using multiple selection interval as a selection mode, besides a new row will be inserted on top of the table after 5 seconds from execution. My problem is: When I run the code and select the first row, after 5 seconds a new row is added (this is OK) but I got two selected rows which I do not want because I need to preserve the old selection,that means after adding the new row only the second row is selected. How to resolve this problem using multiple selection interval mode? Here is my code:
public static void main(String args[]) {
Object[][] rowData = { { "Hello", "World" }, { "By By", "World" } };
Object[] columnNames = { "A", "B" };
JFrame frame = new JFrame("Selecting JTable");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final DefaultTableModel model = new DefaultTableModel(rowData,columnNames);
JTable jtable = new JTable(model);
jtable.setSelectionMode(
ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
JScrollPane scrollPane1 = new JScrollPane(jtable);
frame.add(scrollPane1, BorderLayout.CENTER);
frame.setSize(640, 300);
frame.setVisible(true);
try {
Thread.sleep(6000);
} catch (InterruptedException e) {
e.printStackTrace();
}
model.insertRow(0, rowData[0]);
}
You can call removeRowSelectionInterval method right after you insert the row.
Something like:
int newRowIndex = 0;
model.insertRow(newRowIndex, rowData[0]);
jtable.removeRowSelectionInterval(newRowIndex, newRowIndex);
Good afternoon guys, i'm trying to learn java programming and then i'm encountering some problem that i don't know why with my code when I'm learning about JTable.
So, what I'm trying to do is when i double clicked the row in JTable named TableGejala, the row that i double clicked will transfered into the other JTable named TableAturan and after that the row that i double clicked in TableGejala will be removed. For the part of transferring row from TableGejala to TableAturan successfully transferred when i double clicked the row, but it doesn't delete the correct row in TableGejala. Instead of deleting the row that i clicked, it delete the row below it.
For more details, this is my code to create TableGejala :
private void getTableGejala() {
while(tabel2.getRowCount() > 0){
for(int i=0;i < tabel2.getRowCount();i++){
tabel2.removeRow(i);
}
}
tabel2.addColumn("ID Gejala");
tabel2.addColumn("Nama Gejala");
TabelGejala.setModel(tabel2);
TabelGejala.setAutoResizeMode(TabelGejala.AUTO_RESIZE_ALL_COLUMNS);
}
And then this is my code to get data for my table from MySQL :
private void loadDataGejala(Boolean baru){
tabel2.getDataVector().removeAllElements();
try {
java.sql.Connection konek = (Connection) Koneksi.KoneksiDB.getConnection();
java.sql.Statement konek_statement = konek.createStatement();
String query_bukaTabel = "";
if(baru){
query_bukaTabel = "select id_gejala,nama_gejala from gejala";
}
else{
String idPkt = FieldID.getText();
query_bukaTabel = "select gejala.id_gejala,gejala.nama_gejala from gejala where gejala.id_gejala not in(select id_gejala from aturan2 where id_penyakit='"+idPkt+"')";
}
java.sql.ResultSet line_result = konek_statement.executeQuery(query_bukaTabel);
while (line_result.next()) {
Object[] getO = new Object[2];
getO[0] = line_result.getString("id_gejala");
getO[1] = line_result.getString("nama_gejala");
tabel2.addRow(getO);
}
line_result.close();
konek_statement.close();
}catch (Exception e) {}
}
This is my code to transfer the row and delete the row :
private void TabelGejalaMousePressed(java.awt.event.MouseEvent evt) {
if (evt.getClickCount()>=2){
int col = 0;
int row = 0;
row = TabelGejala.rowAtPoint(evt.getPoint());
col = TabelGejala.columnAtPoint(evt.getPoint());
String col1 = (String)TabelGejala.getValueAt(row, 0);
String col2 = (String)TabelGejala.getValueAt(row, 1);
DefaultTableModel model = (DefaultTableModel) TabelAturan.getModel();
DefaultTableModel old = (DefaultTableModel) TabelGejala.getModel();
old.removeRow(row);
model.addRow(new Object[]{col1, col2, 0});
TabelAturan.requestFocus();
TabelAturan.setRowSelectionInterval(TabelAturan.getRowCount()-1,TabelAturan.getRowCount()-1);
TabelAturan.editCellAt(TabelAturan.getRowCount()-1,2);
}
}
And this is the screenshot of my problem :
Before Double Clicked
After Double Clicked
Which part that makes my output get the wrong row to be deleted? please help me, and thank you in advance for any helps, even for reading my question :)
Firstly disable cell editable property in your first table(TabelGejala) to ensure proper deleting of row. I achieved this using the following code :-
//instance table model
DefaultTableModel tableModel = new DefaultTableModel(new Object[][]{},
new String[]{
"ID Gejala", "Nama Gejala"
}) {
#Override
public boolean isCellEditable(int row, int column) {
//all cells false
return false;
}
};
TabelGejala.setModel(tableModel);
then use jtable.getselectedrow() and jtable.getselectedcolumn() to get values from table. after addition of desired values to second table, simply delete the selected row. here is the code, derived from your code :-
private void TabelGejalaMousePressed(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
if (evt.getClickCount() >= 2) {
DefaultTableModel model = (DefaultTableModel) TabelAturan.getModel();
DefaultTableModel old = (DefaultTableModel) TabelGejala.getModel();
model.addRow(new Object[]{TabelGejala.getValueAt(TabelGejala.getSelectedRow(), 0), TabelGejala.getValueAt(TabelGejala.getSelectedRow(), 1), 0});
old.removeRow(TabelGejala.getSelectedRow());
TabelAturan.requestFocus();
TabelAturan.setRowSelectionInterval(TabelAturan.getRowCount() - 1, TabelAturan.getRowCount() - 1);
TabelAturan.editCellAt(TabelAturan.getRowCount() - 1, 2);
}
}
Looking for a way to change the data outputted to the combo box by selecting the radio buttons, but the data is being pulled in off a text file and saved into an array and then passed back into JCOMBO array list. sorry if question is a big vague i was not to sure how to word it. but the files are separated by two different TXT files which i can easily return data from.
ArrayList<String> stations = Reader("Default.txt");
JComboBox<String> cb = new JComboBox<>(stations.toArray(new String[stations.size()]));
JRadioButton belgrave = new JRadioButton("Belgrave Line");
belgrave.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
cb.removeAllItems();
stations.clear();
ArrayList<String> stations = Reader("Belgrave.txt");
JComboBox<String> cb = new JComboBox<>(stations.toArray(new String[stations.size()]));
}
});
JRadioButton glenwaverly = new JRadioButton("Glen Waverly Line");
glenwaverly.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
cb.removeAllItems();
stations.clear();
ArrayList<String> stations = Reader("Glenwaverly.txt");
JComboBox<String> cb = new JComboBox<>(stations.toArray(new String[stations.size()]));
}
});
ButtonGroup bG = new ButtonGroup();
JButton apply = new JButton("Touch on ?");
JButton cancel = new JButton("Cancel");
Much like the action listener that you added into the apply and cancel button you will need to apply an action listener to the radio button as well.
And then do something like the following.
private void jRadioButton1ActionPerformed(java.awt.event.ActionEvent evt) {
//suppose this is your file input, that you will have to read
String[] test = { "Bird", "Cat", "Dog", "Rabbit", "Pig" };
//your combobox name supposed it is combo
//remove all the previous items
combo.removeAllItems();
//add all the items of the array(there is no addAll method)
for(int i=0; i<test.length; i++)
combo.addItem(test[i]);
}
Hope it helps.
Note that reading from a TXT file and parsing the data as an Array is related with the structure of your txt. Take a look here for how to read a txt line by line.
EDIT
In your listeners you are creating a new local combobox . However cb inside the listeners is not the same as cb outside of the listeners, it is simply a variable that is created & known only inside the method. You need to directly call cb without creating a new object.
Replace this JComboBox<String> cb = new JComboBox<>(stations.toArray(new String[stations.size()]))
with that
String[] items = stations.toArray(new String[stations.size()];
for(int i=0; i<items.length; i++)
cb.addItem(items[i]);
Since the program is too large I'll just paste the important parts of code. Here's the problem:
I have two JTables. First one collects data from DB and displays the list of all invoices stored in DB. The purpose of the second table is when you click on one row from the table, event handler needs to collect integer from column ID. Using this ID the second table will then display all the contest of that invoice (all the products stored in it).
First and second table work perfectly. The problem is that I have no idea how can I collect certain data (I basically just need ID column) from a selected row and then through a method I already made update the second JTable with new info. Here's my code if it helps:
(PS: once I learn how to do that, will the list on the left change every time by default when I select different row, or do I need to use validate/revalidate methods?)
public JPanel tabInvoices() {
JPanel panel = new JPanel(new MigLayout("", "20 [grow, fill] 10 [grow, fill] 20", "20 [] 10 [] 20"));
/** Labels and buttons **/
JLabel labelInv = new JLabel("List of all invoices");
JLabel labelPro = new JLabel("List of all products in this invoice");
/** TABLE: Invoices **/
String[] tableInvTitle = new String[] {"ID", "Date"};
String[][] tableInvData = null;
DefaultTableModel model1 = new DefaultTableModel(tableInvData, tableInvTitle);
JTable tableInv = null;
/** Disable editing of the cell **/
tableInv = new JTable(model1){
public boolean isCellEditable(int r, int c) {
return false;
}
};
/** Load the invoices from DB **/
List<Invoice> listInv = is.getAllInvoices();
for (int i = 0; i < listInv.size(); i++) {
model1.insertRow(i, new Object[] {
listInv.get(i).getID(),
listInv.get(i).getDate()
});
}
/** TABLE: Invoice Info **/
String[] tableInfTitle = new String[] {"ID", "Name", "Type", "Price", "Quantity"};
String[][] tableInfData = null;
DefaultTableModel model2 = new DefaultTableModel(tableInfData, tableInfTitle);
JTable tableInf = null;
/** Disable editing of the cell **/
tableInf = new JTable(model2){
public boolean isCellEditable(int r, int c) {
return false;
}
};
/** Load the products from DB belonging to this invoice **/
List<Product> listPro = is.getInvoiceInfo(1); // Here's where I need the ID fetched from selected row. For now default is 1.
for (int i = 0; i < listPro.size(); i++) {
model2.insertRow(i, new Object[] {
listPro.get(i).getID(),
listPro.get(i).getName(),
listPro.get(i).getType(),
listPro.get(i).getPrice(),
listPro.get(i).getQuantity()
});
}
/** Scroll Panes **/
JScrollPane scrollInv = new JScrollPane(tableInv);
JScrollPane scrollPro = new JScrollPane(tableInf);
panel.add(labelInv);
panel.add(labelPro, "wrap");
panel.add(scrollInv);
panel.add(scrollPro);
return panel;
}
For now, the right table only displays content of the first invoice:
With the help of following code you can get the value of selected clicked cell, so you just have to click on ID cell value (the Invoicee ID whose Products you want to see in second table) and with the help of following event handler you will get the value and then you can get data based on that ID and set to second table. (In the code below, table is the object of your first table)
(Off-course you will have to apply some validation too, to check that the selected (and clicked) cell is ID not the DATE)
table.addMouseListener(new MouseAdapter() {
#Override
public void mouseClicked(MouseEvent e) {
int row = table.rowAtPoint(e.getPoint());
int col = table.columnAtPoint(e.getPoint());
Object selectedObj = table.getValueAt(row, col);
JOptionPane.showMessageDialog(null, "Selected ID is " + selectedObj);
}
});