JTable in a JTable
hi, i'm looking for something weird i think. For an application i have to make a Jtable that has a column that contains a JTable, i've tried some things and it works a bit. So i used the following : for my Table in a cell i did it this way :
a CustomTable which extends from JTable
--> this table holds a checkbox and a JCombobox
--> for the combobox i made a renderer and a editor
this table works when it is on it own
Now, for my other table i made a TableRenderer en TableEditor, When i run it , i have no problem , i see the right info, but now comes my problem, when i choose a different value in the combobox in the table in the cell, it gives me the correct, but when i go to another cell in the table it returns always to the initial state, click again on the combobox and you see the right value, can somebody help me how to solve this
Another question, this table in the cell will have multiple rows, while the other cells can only have one, i 've managed to set the height of rows to the amount of rows in the JtableCell, but now i want that the height of the row is adjusted, but that the component in it has it owns height
thx for the upcoming answers
Tom
I'm really sorry to inform you, but you design paradigm, architecture or idea is ill-conceived.
God knows why you need/want a table within a table - I am sure JTable was never designed to 'contain' JTables... in fact they do not contain any components as such. I think you will have to, perhaps reluctantly, redesign your GUI.
Use two tables, master-slave architecture - not sure if it actually exists, but you can imagine the semantics; the slave's data is determined by selections in the master table. This approach should be a lot more flexible, implementable and usable.
How many times have you seen nested tables? Is your situation necessitate it. If it is a must to have such a construct, I suggest you really sit down and think about designing a new component altogether, perhaps using multiple table communicating via a common table model.
If you want help with designing such a component, I would be willing to help - sounds like a good challenge.
Warm regards.
Similar Messages
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Set JTable in another JTable Column
Hai Java Experts
Can we Set JTable in another JTable Column
In jsp we add one table in a column of another table. Like the previous way can we do it in swing?
Pls Help me with example..
Thanks[http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#editrender]
db
edit And adding a table in a column of another table doesn't make any sense at all. Perhaps you meant showing a table in a cell of another table.
Edited by: DarrylBurke -
Directory being added two times in JTable rows.(JTable Incorrect add. Rows)
hi,
I have a problem, The scenario is that when I click any folder that is in my JTable's row, the table is update by removing all the rows and showing only the contents of my selected folder. If my selected folder contains sub-folders it is some how showing that sub-folder two time and if there are files too that are shown correctly. e.g. If I have a parent folder FG1 and inside that folder I have one more folder FG12 and two .java files then when I click on FG1 my table should show FG12 and two .java files in separate rows, right now it is showing me the contents of FG1 folder but some how FG12 is shown on two rows i.e. first row shows FG12 second row shows FG12 third row shows my .java file and fourth row shows my .java fil. FG12 should be shown only one time. The code is attached. The methods to look are upDateTabel(...) and clearTableData(....), after clearing all my rows then I proceed on adding my data to the Jtable and inserting rows. May be addRow(... method of DefaultTableModel is called two times if it is a directory I don't know why. Please see the code below what I am doing wrong and how to fix it. Any help is appreciated.
Thanks
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.table.*;
import javax.swing.border.*;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;
public class SimpleTable extends JPanel {
/** Formats the date */
protected SimpleDateFormat formatter;
/** two-dimensional array to hold the information for each column */
protected Object data[][];
/** variable to hold the date and time in a raw form for the directory*/
protected long dateDirectory;
/** holds the readable form converted date for the directories*/
protected String dirDate;
/** holds the readable form converted date for the files*/
protected String fileDate;
/** variable to hold the date and time in a raw form for the file*/
protected long dateFile;
/** holds the length of the file in bytes */
protected long totalLen;
/** convert the length to the wrapper class */
protected Long longe;
/** Vector to hold the sub directories */
protected Vector subDir;
/** holds the name of the selected directory */
protected String dirNameHold;
/** converting vector to an Array and store the values in this */
protected File directoryArray[];
/** hashtable to store the key-value pair */
protected static Hashtable hashTable = new Hashtable();
/** refer to the TableModel that is the default*/
protected DefaultTableModel model;
/** stores the path of the selected file */
protected static String fullPath;
/** stores the currently selected file */
protected static File selectedFilename;
/** stores the extension of the selected file */
protected static String extension;
/** holds the names of the columns */
protected final String columnNames[] = {"Name", "Size", "Type", "Modified"};
* Default constructor
* @param File the list of files and directories to be shown in the JTable.
public SimpleTable(File directoryArray[])
this.setLayout(new BorderLayout());
this.setBorder( BorderFactory.createEmptyBorder( 0, 0, 0, 0 ) );
(SimpleTable.hashTable).clear();
data = new Object[this.getRowTotal(directoryArray)][this.getColumnTotal()];
formatter = new SimpleDateFormat("mm/dd/yyyy hh:mm aaa");
//this shows the data in the JTable i.e. the primary directory stuff.
for(int k = 0; k < directoryArray.length; k++)
if(directoryArray[k].isDirectory())
data[k][0] = directoryArray[k].getName();
data[k][2] = "File Folder";
dateDirectory = directoryArray[k].lastModified();
dirDate = formatter.format(new java.util.Date(dateDirectory));
data[k][3] = dirDate;
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
else if(directoryArray[k].isFile())
data[k][0] = directoryArray[k].getName();
totalLen = directoryArray[k].length();
longe = new Long(totalLen);
data[k][1] = longe + " Bytes";
dateFile = directoryArray[k].lastModified();
fileDate = formatter.format(new java.util.Date(dateFile));
data[k][3] = fileDate;
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
model = new DefaultTableModel();
model.addTableModelListener( new TableModelListener(){
public void tableChanged( javax.swing.event.TableModelEvent e )
final JTable table = new JTable(model);
table.getTableHeader().setReorderingAllowed(false);
table.setRowSelectionAllowed(false);
table.setBorder( BorderFactory.createEmptyBorder( 0, 0, 0, 0 ) );
table.setShowHorizontalLines(false);
table.setShowVerticalLines(false);
table.addMouseListener(new MouseAdapter()
public void mouseReleased(MouseEvent e)
//TBD:- needs to handle the doubleClick of the mouse.
System.out.println("The clicked component is " + table.rowAtPoint(e.getPoint()) + "AND the number of clicks is " + e.getClickCount());
if(e.getClickCount() >= 2 &&
(table.getSelectedColumn() == 0) &&
((table.getColumnName(0)).equals(columnNames[0])))
System.out.println("The clicked component is " + table.rowAtPoint(e.getPoint()) + "AND the number of clicks is " + e.getClickCount());
upDateTable(table);
upDateTable(table);
/** set the columns */
for(int c = 0; c < columnNames.length; c++)
model.addColumn(columnNames[c]);
/** set the rows */
for(int r = 0; r < data.length; r++)
model.addRow(data[r]);
//this sets the tool-tip on the headers.
DefaultTableCellRenderer D_headerRenderer = (DefaultTableCellRenderer ) table.getTableHeader().getDefaultRenderer();
table.getColumnModel().getColumn(0).setHeaderRenderer(D_headerRenderer );
((DefaultTableCellRenderer)D_headerRenderer).setToolTipText("File and Folder in the Current Folder");
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this window.
this.add(scrollPane, BorderLayout.CENTER);
* Returns the number of columns
* @return int number of columns
public int getColumnTotal()
return columnNames.length;
* Returns the number of rows
* @return int number of rows
public int getRowTotal(Object directoryArray[])
return directoryArray.length;
* Update the table according to the selection made if a directory then searches and
* shows the contents of the directory, if a file fills the appropriate fields.
* @param JTable table we are working on
* //TBD: handling of the files.
private void upDateTable(JTable table)
if((table.getSelectedColumn() == 0) && ((table.getColumnName(0)).equals(columnNames[0])))
dirNameHold =(String) table.getValueAt(table.getSelectedRow(),table.getSelectedColumn());
File argument = findPath(dirNameHold);
if(argument.isFile())
CMRDialog.fileNameTextField.setText(argument.getName());
try
fullPath = argument.getCanonicalPath();
selectedFilename = argument.getCanonicalFile();
CMRDialog.filtersComboBox.removeAllItems();
extension = fullPath.substring(fullPath.lastIndexOf('.'));
CMRDialog.filtersComboBox.addItem("( " + extension + " )" + " File");
catch(IOException e)
System.out.println("THE ERROR IS " + e);
return;
else if(argument.isDirectory())
String path = argument.getName();
//find the system dependent file separator
//String fileSeparator = System.getProperty("file.separator");
CMRDialog.driveComboBox.addItem(" " + path);
subDir = Search.subDirs(argument);
/**TBD:- needs a method to convert the vector to an array and return the array */
directoryArray = new File[subDir.size()];
int indexCount = 0;
/** TBD:- This is inefficient way of converting a vector to an array */
Iterator e = subDir.iterator();
while( e.hasNext() )
directoryArray[indexCount] = (File)e.next();
indexCount++;
/** now calls this method and clears the previous data */
clearTableData(table);
(SimpleTable.hashTable).clear();
data = new Object[this.getRowTotal(directoryArray)][this.getColumnTotal()];
formatter = new SimpleDateFormat("mm/dd/yyyy hh:mm aaa");
data = null;
data = new Object[this.getRowTotal(directoryArray)][this.getColumnTotal()];
for(int k = 0; k < directoryArray.length; k++)
if(directoryArray[k].isDirectory())
data[k][0] = directoryArray[k].getName();
data[k][2] = "File Folder";
dateDirectory = directoryArray[k].lastModified();
dirDate = formatter.format(new java.util.Date(dateDirectory));
data[k][3] = dirDate;
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
model.addRow(data[k]);
model.fireTableDataChanged();
else if(directoryArray[k].isFile())
data[k][0] = directoryArray[k].getName();
totalLen = directoryArray[k].length();
longe = new Long(totalLen);
data[k][1] = longe + " Bytes";
dateFile = directoryArray[k].lastModified();
fileDate = formatter.format(new java.util.Date(dateFile));
data[k][3] = fileDate;
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]); }
model.addRow(data[k]);
model.fireTableDataChanged();
table.revalidate();
table.validate();
* Searches the Hashtable and returns the path of the folder or the value.
* @param String name of the directory or file.
* @return File full-path of the selected file or directory.
public File findPath(String value)
return (File)((SimpleTable.hashTable).get(value));
* This clears the previous data in the JTable and removes the rows.
* @param JTable table we are updating.
public void clearTableData(JTable table)
for(int row = table.getRowCount() - 1; row >= 0; --row)
model.removeRow(row);
model.fireTableStructureChanged();java gurus any idea how ti fix this problem.
thanks -
Rendering a JTable within a JTable Cell
How can one render a JTable within another JTable cell?
You could return JTable in your TableCellRenderer.
Denis Krukovsky
http://sourceforge.net/projects/dotuseful/ -
Import a jtable in a jtable cell
Hello
I would like to create a jtable in which where one column will contains a extra jtable!.
Does anyone had succeded with that??
Thank you for your time
gregimport javax.swing.table.TableCellRenderer;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import java.awt.Component;
import javax.swing.JFrame;
import javax.swing.table.TableColumn;
import javax.swing.DefaultCellEditor;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class JTableTest2 extends JFrame
JTable table = new JTable(4,2);
public JScrollPane ere[] = new JScrollPane[4];
JButton jButton1 = new JButton();
public JTableTest2()
for(int i=0;i<ere.length;++i)
ere= new JScrollPane();
JTable ere2 = new JTable(10,3);
ere2.setBounds(1,1,100,100);
ere.getViewport().add(ere2);
ere.setSize(100,100);
TableColumn column = table.getColumnModel().getColumn(0);
DefaultCellEditor editor = new DefaultCellEditor(new JTextField())
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column)
JScrollPane editor = ere[row];
editorComponent = editor;
return editorComponent;
public boolean stopCellEditing()
JScrollPane c = (JScrollPane)editorComponent;
JTable table = (JTable)c.getViewport().getView();
if(!table.isEditing() || editorComponent == null)
return true;
else
return table.getCellEditor().stopCellEditing();
public void cancelCellEditing()
JScrollPane c = (JScrollPane)editorComponent;
JTable table = (JTable)c.getViewport().getView();
if(editorComponent != null && table.isEditing())
table.getCellEditor().cancelCellEditing();
editor.setClickCountToStart(1);
TableCellRenderer renderer = new TableCellRenderer()
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
int row, int column)
JScrollPane renderer = ere[row];
return renderer;
column.setCellRenderer(renderer);
column.setCellEditor(editor);
table.setRowHeight(100);
getContentPane().add(new JScrollPane(table));
setSize(400,600);
setVisible(true);
public static void main(String[] args)
JTableTest2 t = new JTableTest2();
t.show();
} Wow wonderful Code....Hi I'm Dharmesh..You guys are looking good in JTable....actually I'm very New to Swing in Core Java...Almost my concept is clear..rightnow I'm Studying About JTable...Wants to Mastery in that but I also It is too Difficult...I have go through some JTable codes...I Noticed that JTable is a fantastic feature of Swings...and Every thing is possible by making a renderer for particular column of that table..so I want little guidance in that ...And i know you guys can better help me....afterall I want to do mastery in JTable..I want just a good start..
Help me java guys..
Thanks you..
regards
Dharmesh Patel
Edited by: Monty82 on Jan 24, 2008 4:23 AM -
Updating a JTable using a JTable
I am looking to update an empty JTable using the data from a JTable containing a set of data.
I am aware that addRow can be used with the DefaultTableModel from previous discussions on this forum, but I have found this call isn't available when using AbstractTableModel.
The reason I have been having some problems with this as it is necessary for the AbstractTableModel to be used in the context of the GUI, and I am asking if there is a way to solve this using the AbstractTableModel?
I am using an AbstractTableModel for both the data table and the table showing all currently and previously selected rows.I am using an AbstractTableModel for both the data table and the table showing all currently and previously selected rows.No you aren't. You can't create an Abstract class because not all the methods are implements. You are using a class that extends AbstractTableModel.
So why not use the DefaultTableModel and make your life simple? -
Cell Editor for a JTable within A JTable Cell
My individual cells each contain a seperate JTable and I need to write a cell editor for it. I'm not really sure how to write one so if someone show me where I can find some useful examples of such a cell editor I would greatly appreciate it. Thank you for your time. :-)
So, you have a big table whose cells each contain a little table. I assume you already have the little tables working correctly with cell editors and so on, and you want to write a cell editor for the big table. Correct?
My problem with this is that I can't imagine how this would actually work in practice. Suppose I click on a cell in the big table; then the cell renderer displays the appropriate little table. At this point should I see one of the cells in that little table selected, and should I be able to use the Tab key to move around the little table? And if so, then I can't use the Tab key to move around the big table. Next, suppose I press F2 indicating that I want to edit the little table. What should change? Should I now be able to tab around the little table, whereas I couldn't before? And if so, how do I indicate that I have stopped editing the little table? Pressing Enter indicates to the little table's cell editor that its editing is finished, but how should I tell the big table's cell editor that its editing is finished?
Perhaps if you can answer this, you may have a better idea of how to solve your problem. Sorry I only have questions and not answers. -
JTable - JComboBox/List - JTable
My target: I would like to have multiple columns in my comboBox or list. When I choose one item, the result would be just a single column but not all columns. Moreover, the whole comboBox is actually one cell within a JTable. i.e. when I click one cell of a jtable, it shows a comboBox.
I have searched this forum but just found some ways to get multiple columns in comboBox, and it seem no one has tried to include it in a JTable cell. I just wonder if anyone can help and it would be thankful.Let me post the code here:
//the init of comboBox model within jtable here
private void initSupplierCombo(TableColumn col){
String query = "select supplier_no, supplier_name from supplier_master group by supplier_no,supplier_name;";
JComboBox comboBox = new JComboBox();
Vector supplierList = itemDB.getComboResults(query);
try {
comboBox.setModel(new ResultSetComboBoxModel(supplierList));
col.setCellEditor(new DefaultCellEditor(comboBox));
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText(
"Click for combo box & choose");
col.setCellRenderer(renderer);
//Set up tool tip for the sport column header.
TableCellRenderer headerRenderer = col.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer) {
( (DefaultTableCellRenderer) headerRenderer).setToolTipText(
"Click to see a list of choices");
catch (Exception e) {
e.printStackTrace();
//ResultSetComboBoxModel
import javax.swing.*;
import java.sql.*;
import java.util.Vector;
public class ResultSetComboBoxModel extends ResultSetListModel
implements ComboBoxModel
protected Object selected = null;
public ResultSetComboBoxModel(Vector columnResults) throws Exception {
super(columnResults);
public Object getSelectedItem() {
return selected;
public void setSelectedItem(Object o) {
if(o==null)
selected = o;
else{
String value = (String) o;
selected = (Object)(value.substring(0,value.lastIndexOf(" // ")));
//ResultSetListModel
import javax.swing.*;
import java.util.*;
import java.sql.*;
public class ResultSetListModel extends AbstractListModel {
List values = new ArrayList();
public ResultSetListModel(Vector columnResults) throws Exception {
for(Iterator item = columnResults.iterator();item.hasNext();){
String[] value = (String[])item.next();
values.add(value[0] + " // " + value[1]);
public int getSize() {
return values.size();
public Object getElementAt(int index) {
return values.get(index);
} -
How to select a specific cell in a JTable?
Hi there,
in a JTable, I would like to select a specific cell (to highlight it) from a JButton.
Here a sample code...
Who could help me to fill it?
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;
import java.awt.event.*;
public class TableSelection{
public static void main (String args[]) {
JFrame frame = new MyFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.show();
class MyFrame extends JFrame{
public MyFrame(){
setTitle("TableSelection");
setSize(WIDTH,HEIGHT);
DefaultTableModel myModel = new DefaultTableModel(2,2);
JTable myTable = new JTable(myModel);
myTable.setCellSelectionEnabled(true);
JButton button00 = new JButton("select 0,0");
button00.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent event){
System.out.println("selection of cell (0,0)");
//--- what code is required to select the cell(0,0)?
JButton button11 = new JButton("select 1,1");
button11.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent event){
System.out.println("selection of cell (1,1)");
//--- what code is required to select the cell(1,1)?
Box myBox = new Box(BoxLayout.Y_AXIS);
myBox.add(new JScrollPane(myTable));
myBox.add(button00);
myBox.add(button11);
getContentPane().add(myBox, BorderLayout.CENTER);
private static final int WIDTH=200;
private static final int HEIGHT=200;
}Thanks a lot for your help.
DenisUse the addColumnSelectionInterval(int index1, int index2)method ~ http://java.sun.com/j2se/1.4/docs/api/javax/swing/JTable.html#addColumnSelectionInterval(int,%20int)
and the addRowSelectionInterval(int index1, int index2) method ~ http://java.sun.com/j2se/1.4/docs/api/javax/swing/JTable.html#addRowSelectionInterval(int,%20int)
Hope that helped.
afotoglidis -
Create a JTable based on an ArrayList containing instances of a class.
I have a class, IncomeBudgetItem, instances of which are contained in an ArrayList. I would like to create a JTable, based on this ArrayList. One variable is a string, while others are type double. Not all variables are to appear in the JTable.
The internal logic of my program is already working. And my GUI is largely constructed. I'm just not sure how to make them talk to each other. The actually creation of the JTable is my biggest problem right now.import java.awt.Dimension;
import java.awt.GridLayout;
import java.util.ArrayList;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
public class TableDemo extends JPanel {
private boolean DEBUG = false;
public TableDemo() {
super(new GridLayout(1, 0));
ArrayList<MyObject> list = new ArrayList<MyObject>();
list.add(new MyObject("Kathy", "Smith", "Snowboarding", new Integer(5),
new Boolean(false)));
list.add(new MyObject("John", "Doe", "Rowing", new Integer(3),
new Boolean(true)));
list.add(new MyObject("Sue", "Black", "Knitting", new Integer(2),
new Boolean(false)));
list.add(new MyObject("Jane", "White", "Speed reading",
new Integer(20), new Boolean(true)));
JTable table = new JTable(new MyTableModel(list));
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
// Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
// Add the scroll pane to this panel.
add(scrollPane);
class MyObject {
String firstName;
String lastName;
String sport;
int years;
boolean isVeg;
MyObject(String firstName, String lastName, String sport, int years,
boolean isVeg) {
this.firstName = firstName;
this.lastName = lastName;
this.sport = sport;
this.years = years;
this.isVeg = isVeg;
class MyTableModel extends AbstractTableModel {
private String[] columnNames = { "First Name", "Last Name", "Sport",
"# of Years", "Vegetarian" };
ArrayList<MyObject> list = null;
MyTableModel(ArrayList<MyObject> list) {
this.list = list;
public int getColumnCount() {
return columnNames.length;
public int getRowCount() {
return list.size();
public String getColumnName(int col) {
return columnNames[col];
public Object getValueAt(int row, int col) {
MyObject object = list.get(row);
switch (col) {
case 0:
return object.firstName;
case 1:
return object.lastName;
case 2:
return object.sport;
case 3:
return object.years;
case 4:
return object.isVeg;
default:
return "unknown";
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
* Create the GUI and show it. For thread safety, this method should be
* invoked from the event-dispatching thread.
private static void createAndShowGUI() {
// Create and set up the window.
JFrame frame = new JFrame("TableDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create and set up the content pane.
TableDemo newContentPane = new TableDemo();
newContentPane.setOpaque(true); // content panes must be opaque
frame.setContentPane(newContentPane);
// Display the window.
frame.pack();
frame.setVisible(true);
public static void main(String[] args) {
// Schedule a job for the event-dispatching thread:
// creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
} -
Error in updating Jtable Database
package desktopapplication1; import java.util.*; import java.sql.*; import javax.swing.JOptionPane; import javax.swing.table.*; public class Datab extends DefaultTableModel { private Connection conn; private Statement st; private ResultSet rs; private ResultSetMetaData rsmd; private int rows; public Datab(String driver, String url, String query) throws SQLException, ClassNotFoundException { Class.forName(driver); conn = DriverManager.getConnection(url); st = conn.createStatement(rs.TYPE_SCROLL_SENSITIVE,rs.CONCUR_UPDATABLE); if ( query.substring(0,3).equalsIgnoreCase("INS") ) { st.executeUpdate(query); } else if ( query.substring(0,3).equalsIgnoreCase("DEL") ) { st.executeUpdate(query); } else { rs = st.executeQuery(query); rsmd = rs.getMetaData(); rs.last(); rows = rs.getRow(); } fireTableStructureChanged(); } public String getColumnName(int column){ try{ return rsmd.getColumnName(column+1); }catch(Exception e){ e.printStackTrace(); } return ""; } public int getColumnCount(){ try{ return rsmd.getColumnCount(); }catch(Exception e){ e.printStackTrace(); } return 0; } public int getRowCount(){ try{ return rows; }catch(Exception e){ e.printStackTrace(); } return 0; } public Object getValueAt(int row, int column){ try{ rs.absolute(row+1); return rs.getObject(column+1); }catch(Exception e){ e.printStackTrace(); } return ""; } public Class getColumnClass(int c) { return getValueAt(0, c).getClass(); } public boolean isCellEditable(int row, int column) { if (column < 0) { return false; } else { return true; } } public void setValueAt(Object value, int row, int column){ try{ int conf = JOptionPane.showConfirmDialog(null,"You wanna reaplace "+getValueAt(row,column)+" with "+value+"?", null, 2); if ( conf == 0 ) { rs.absolute(row+1); System.out.println("ROW = "+row+"CURSOR = "+(row+1)+""+rs.getString(1)+column); rs.updateString("Recipe","test"); //i tried to use a simple update cause the normal was not running but same error+ rs.updateRow(); }else { System.out.println("0"); } }catch(SQLException sqle){ System.err.println("Error setting value at row "+row+" column "+column+" with value "+value); sqle.printStackTrace(); } } }
hi, when i click on my table to edit a value, it give me an error and sometimes fill the cell with a value like [B@341j0j
Error setting value at row 1 column 0 with value soup2
java.sql.SQLException: [Microsoft][Driver ODBC Microsoft Access]Error in row
at sun.jdbc.odbc.JdbcOdbcResultSet.setPos(JdbcOdbcResultSet.java:5271)
at sun.jdbc.odbc.JdbcOdbcResultSet.updateRow(JdbcOdbcResultSet.java:4171)
at desktopapplication1.Datab.setValueAt(Datab.java:104)
at javax.swing.JTable.setValueAt(JTable.java:2719)
at javax.swing.JTable.editingStopped(JTable.java:4721)
at javax.swing.AbstractCellEditor.fireEditingStopped(AbstractCellEditor.java:125)
at javax.swing.DefaultCellEditor$EditorDelegate.stopCellEditing(DefaultCellEditor.java:350)
at javax.swing.DefaultCellEditor.stopCellEditing(DefaultCellEditor.java:215)
at javax.swing.JTable$GenericEditor.stopCellEditing(JTable.java:5475)
at javax.swing.DefaultCellEditor$EditorDelegate.actionPerformed(DefaultCellEditor.java:367)
at javax.swing.JTextField.fireActionPerformed(JTextField.java:492)
at javax.swing.JTextField.postActionEvent(JTextField.java:705)
at javax.swing.JTextField$NotifyAction.actionPerformed(JTextField.java:820)
at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1636)
at javax.swing.JComponent.processKeyBinding(JComponent.java:2851)
at javax.swing.JComponent.processKeyBindings(JComponent.java:2886)
at javax.swing.JComponent.processKeyEvent(JComponent.java:2814)
at java.awt.Component.processEvent(Component.java:6040)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1848)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:704)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:969)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:841)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:668)
at java.awt.Component.dispatchEventImpl(Component.java:4502)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Window.dispatchEventImpl(Window.java:2475)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
my db is like
RecipeName intvalue1 intvalue2 intvalue3 stringvalue4
soup 3 2 11 fish
chocolate 3 2 44 dessert
Edited by: kainard on Aug 1, 2010 2:31 PM
Edited by: kainard on Aug 1, 2010 2:37 PMCan you explain why you declare
private Connection conn;
private Statement st;
private ResultSet rs;
private ResultSetMetaData rsmd;
as private -
To refresh the contents in JTextArea on selection of a row in JTable.
This is the block of code that i have tried :
import java.awt.GridBagConstraints;
import java.awt.SystemColor;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.DefaultTableModel;
import ui.layouts.ComponentsBox;
import ui.layouts.GridPanel;
import ui.layouts.LayoutConstants;
import util.ui.UIUtil;
public class ElectronicJournal extends GridPanel {
private boolean DEBUG = false;
private boolean ALLOW_COLUMN_SELECTION = false;
private boolean ALLOW_ROW_SELECTION = true;
private GridPanel jGPanel = new GridPanel();
private GridPanel jGPanel1 = new GridPanel();
private GridPanel jGPanel2 = new GridPanel();
DefaultTableModel model;
private JLabel jLblTillNo = UIUtil.getHeaderLabel("TillNo :");
private JLabel jLblTillNoData = UIUtil.getBodyLabel("TILL123");
private JLabel jLblData = UIUtil.getBodyLabel("Detailed View");
private JTextArea textArea = new JTextArea();
private JScrollPane spTimeEntryView = new JScrollPane();
private JScrollPane pan = new JScrollPane();
String html= " Item Description: Price Change \n Old Price: 40.00 \n New Price: 50.00 \n Authorized By:USER1123 \n";
private JButton jBtnExporttoExcel = UIUtil.getButton(85,
"Export to Excel - F2", "");
final String[] colHeads = { "Task No", "Data", "User ID", "Date Time",
"Description" };
final Object[][] data = {
{ "1", "50.00", "USER123", "12/10/2006 05:30", "Price Change" },
{ "2", "100.00", "USER234", "15/10/2006 03:30", "Price Change12345"},
final String[] colHeads1 = {"Detailed View" };
final Object[][] data1 = {
{ "Task:Price Change", "\n"," Old Price:50.00"," \n ","New Price:100.00"," \n" }
JTable jtblTimeEntry = new JTable(data, colHeads);
JTable jTbl1 = new JTable(data1,colHeads1);
ComponentsBox jpBoxButton = new ComponentsBox(LayoutConstants.X_AXIS);
public ElectronicJournal() {
super();
jtblTimeEntry.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
if (ALLOW_ROW_SELECTION) { // true by default
ListSelectionModel rowSM = jtblTimeEntry.getSelectionModel();
rowSM.addListSelectionListener(new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
//Ignore extra messages.
if (e.getValueIsAdjusting()) return;
ListSelectionModel lsm = (ListSelectionModel)e.getSource();
if (lsm.isSelectionEmpty()) {
System.out.println("No rows are selected.");
} else {
int selectedRow = lsm.getMinSelectionIndex();
System.out.println("Row " + selectedRow
+ " is now selected.");
textArea.append("asd \n 123 \n");
} else {
jtblTimeEntry.setRowSelectionAllowed(false);
if (DEBUG) {
jtblTimeEntry.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
printDebugData(jtblTimeEntry);
initialize();
private void printDebugData(JTable table) {
int numRows = table.getRowCount();
int numCols = table.getColumnCount();
javax.swing.table.TableModel model = table.getModel();
System.out.println("Value of data: ");
for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
System.out.print(" " + model.getValueAt(i, j));
System.out.println();
System.out.println("--------------------------");
private void initialize() {
this.setSize(680, 200);
this.setBackground(java.awt.SystemColor.control);
jBtnExporttoExcel.setBackground(SystemColor.control);
ComponentsBox cmpRibbonHORZ = new ComponentsBox(LayoutConstants.X_AXIS);
cmpRibbonHORZ.addComponent(jBtnExporttoExcel, false);
jpBoxButton.add(cmpRibbonHORZ);
this.addFilledComponent(jGPanel, 1, 1, 1, 1, GridBagConstraints.BOTH);
this.addFilledComponent(jGPanel1, 2, 1, 11, 5, GridBagConstraints.BOTH);
this.addFilledComponent(jGPanel2, 2, 13, 17, 5, GridBagConstraints.BOTH);
jGPanel.setSize(650, 91);
jGPanel.setBackground(SystemColor.control);
jGPanel.addFilledComponent(jLblTillNo,1,1,GridBagConstraints.WEST);
jGPanel.addFilledComponent(jLblTillNoData,1,10,GridBagConstraints.BOTH);
jGPanel.setBorder(javax.swing.BorderFactory.createEmptyBorder(0,0,0,0));
jGPanel1.setBackground(SystemColor.control);
jGPanel1.setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 0, 0,
0));
spTimeEntryView.setViewportView(jtblTimeEntry);
jGPanel1.addFilledComponent(spTimeEntryView, 1, 1, 11, 4,
GridBagConstraints.BOTH);
jGPanel2.addFilledComponent(jLblData,1,1,GridBagConstraints.WEST);
jGPanel2.setBackground(SystemColor.control);
jGPanel2.setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 0, 0,
0));
//textArea.setText(html);
pan.setViewportView(textArea);
int selectedRow = jTbl1.getSelectedRow();
System.out.println("selectedRow ::" +selectedRow);
int colCount = jTbl1.getColumnCount();
System.out.println("colCount ::" +colCount);
StringBuffer buf = new StringBuffer();
System.out.println("Out Of For");
/*for(int count =0;count<colCount;count++)
{System.out.println("Inside For");
buf.append(jTbl1.getValueAt(selectedRow,count));
// method 1 : Constructs a new text area with the specified text.
textArea =new JTextArea(buf.toString());
//method 2 :To Append the given string to the text area's current text.
textArea.append(buf.toString());
jGPanel2.addFilledComponent(pan,2,1,5,5,GridBagConstraints.BOTH);
this.addAnchoredComponent(jpBoxButton, 7, 5, 11, 5,
GridBagConstraints.CENTER);
This code displays the same data on the JTextArea everytime i select each row,but my requirement is ,it has to refresh and display different datas in the JTextArea accordingly,as i select each row.Please help.Its urgent.
Message was edited by: Samyuktha
SamyukthaPlease help.Its urgentThen why didn't you use the formatting tags to make it easier for use to read the code?
Because of the above I didn't take a close look at your code, but i would suggest you should be using a ListSelectionListener to be notified when a row is selected, then you just populate the text area. -
Assign a matrix to a JTable? Possible?
OK. I will not know the incomming data matrix untill it is assigned. Is there anyway to put the following matrix into a JTable without a headache? All I see are examples of Object class variables assigned to JTables. If anyone knows how to make this work I will appreciate it very much. Here is what I have come up with as an idea:
String[][] originalDMatrix;
// Assigned String Matrix.
if(Program.printDataMatrix.isSelected()) {
originalDMatrix = new String[Program.matrix.length][];
for(int i = 0; i < Program.matrix.length; i++) {
originalDMatrix[i] = new String[Program.matrix.length];
for (int j = 0; j < Program.matrix[i].length; j++) {
originalDMatrix[i][j] = Program.matrix[i][j];
// Create the table and give it the matrix THIS IS WHERE IT WONT WORK.
final JTable originalDMatrixT = new JTable(originalDMatrix);
[/code[
ERROR OUTPUT:
cannot resolve symbol
symbol : constructor JTable (java.lang.String[][])
location: class javax.swing.JTable
final JTable originalDMatrixT = new JTable(originalDMatrix);
^
1 error
Errors compiling Results.Changing to strings gave same result but with Object:
symbol : constructor JTable (java.lang.Object[][])
location: class javax.swing.JTable
final JTable originalDMatrixT = new JTable(originalDMatrix);
^
1 error -
MDI JTable Overlap Area Repaint Problem
Hi all,
I have a problem for my application in MDI mode.
I open many windows (JInternalFrame contain JTable) under JDesktopPane. Some of the windows are overlapping and when they receive update in the table, it seems repaint all of the overlapping windows, not only itself. This make my application performance become poor, slow respond for drap & drop an existing window or open a new window.
To prove this, i make a simple example for open many simple table and have a thread to update the table's value for every 200 mill second. After i open about 20 windows, the performance become poor again.
If anyone face the same problem with me and any suggestions to solve the problem ?
Please help !!!!!
Following are my sources:
public class TestMDI extends JFrame {
private static final long serialVersionUID = 1L;
private JPanel contentPanel;
private JDesktopPane desktopPane;
private JMenuBar menuBar;
private List<TestPanel> allScreens = new ArrayList<TestPanel>();
private List<JDialog> freeFloatDialogs = new ArrayList<JDialog>();
private List<JInternalFrame> mdiInternalFrm = new ArrayList<JInternalFrame>();
int x = 0;
int y = 0;
int index = 0;
private static int MDI_MODE = 0;
private static int FREE_FLOAT_MODE = 1;
private int windowMode = MDI_MODE;
public TestMDI() {
init();
public static void main(String[] args) {
new TestMDI().show();
public void init() {
contentPanel = new JPanel();
desktopPane = new JDesktopPane();
desktopPane.setDragMode(JDesktopPane.LIVE_DRAG_MODE);
desktopPane.setFocusTraversalKeysEnabled(false);
desktopPane.setFocusTraversalPolicyProvider(false);
desktopPane.setBorder(null);
desktopPane.setIgnoreRepaint(true);
desktopPane.setPreferredSize(new Dimension(1000, 800));
this.setSize(new Dimension(1000, 800));
menuBar = new JMenuBar();
JMenu menu1 = new JMenu("Test");
JMenuItem menuItem1 = new JMenuItem("Open Lable Screen");
menuItem1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
for (int i = 1; i < 4; i++) {
final TestJLableScreen screen = new TestJLableScreen("Screen " + (allScreens.size() + 1));
screen.startTime();
if (windowMode == MDI_MODE) {
JInternalFrame frame = createInternalFram(screen);
desktopPane.add(frame);
mdiInternalFrm.add(frame);
if (allScreens.size() * 60 + 100 < 1000) {
x = allScreens.size() * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
frame.setLocation(x, y);
frame.setVisible(true);
} else {
JDialog dialog = createJDialog(screen);
freeFloatDialogs.add(dialog);
if (i * 60 + 100 < 1000) {
x = i * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
dialog.setLocation(x, y);
dialog.setVisible(true);
allScreens.add(screen);
JMenuItem menuItem2 = new JMenuItem("Open Table Screen");
menuItem2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
for (int i = 1; i < 4; i++) {
TestTableScreen screen = new TestTableScreen("Screen " + (allScreens.size() + 1));
screen.startTime();
if (windowMode == MDI_MODE) {
JInternalFrame frame = createInternalFram(screen);
desktopPane.add(frame);
mdiInternalFrm.add(frame);
if (allScreens.size() * 60 + 100 < 1000) {
x = allScreens.size() * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
frame.setLocation(x, y);
frame.setVisible(true);
} else {
JDialog dialog = createJDialog(screen);
freeFloatDialogs.add(dialog);
if (i * 60 + 100 < 1000) {
x = i * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
dialog.setLocation(x, y);
dialog.setVisible(true);
allScreens.add(screen);
menu1.add(menuItem1);
menu1.add(menuItem2);
this.setJMenuBar(menuBar);
this.getJMenuBar().add(menu1);
this.getJMenuBar().add(createSwitchMenu());
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.add(desktopPane);
desktopPane.setDesktopManager(null);
public JInternalFrame createInternalFram(final TestPanel panel) {
final CustomeInternalFrame internalFrame = new CustomeInternalFrame(panel.getTitle(), true, true, true, true) {
public void doDefaultCloseAction() {
super.doDefaultCloseAction();
allScreens.remove(panel);
internalFrame.setPanel(panel);
// internalFrame.setOpaque(false);
internalFrame.setSize(new Dimension(1010, 445));
internalFrame.add(panel);
internalFrame.setFocusTraversalKeysEnabled(false);
internalFrame.setFocusTraversalPolicyProvider(false);
desktopPane.getDesktopManager();
// internalFrame.setFocusTraversalKeysEnabled(false);
internalFrame.setIgnoreRepaint(true);
return internalFrame;
public JDialog createJDialog(final TestPanel panel) {
JDialog dialog = new JDialog(this, panel.getTitle());
dialog.setSize(new Dimension(1010, 445));
dialog.add(panel);
dialog.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
allScreens.remove(panel);
return dialog;
public JMenu createSwitchMenu() {
JMenu menu = new JMenu("Test2");
JMenuItem menuItem1 = new JMenuItem("Switch FreeFloat");
menuItem1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
windowMode = FREE_FLOAT_MODE;
for (JInternalFrame frm : mdiInternalFrm) {
frm.setVisible(false);
frm.dispose();
frm = null;
mdiInternalFrm.clear();
remove(desktopPane);
desktopPane.removeAll();
// revalidate();
repaint();
add(contentPanel);
index = 0;
for (JDialog dialog : freeFloatDialogs) {
dialog.setVisible(false);
dialog.dispose();
dialog = null;
freeFloatDialogs.clear();
for (int i = 0; i < allScreens.size(); i++) {
JDialog dialog = createJDialog(allScreens.get(i));
freeFloatDialogs.add(dialog);
if (i * 60 + 100 < 1000) {
x = i * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
dialog.setLocation(x, y);
dialog.setVisible(true);
JMenuItem menuItem2 = new JMenuItem("Switch MDI");
menuItem2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
windowMode = MDI_MODE;
remove(contentPanel);
add(desktopPane);
for (int i = 0; i < freeFloatDialogs.size(); i++) {
freeFloatDialogs.get(i).setVisible(false);
freeFloatDialogs.get(i).dispose();
freeFloatDialogs.clear();
// revalidate();
repaint();
for (JInternalFrame frm : mdiInternalFrm) {
frm.setVisible(false);
frm.dispose();
frm = null;
mdiInternalFrm.clear();
index = 0;
for (int i = 0; i < allScreens.size(); i++) {
JInternalFrame frame = createInternalFram(allScreens.get(i));
desktopPane.add(frame);
mdiInternalFrm.add(frame);
if (i * 60 + 100 < 1000) {
x = i * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
frame.setLocation(x, y);
frame.setVisible(true);
menu.add(menuItem1);
menu.add(menuItem2);
return menu;
public class TestTableScreen extends TestPanel {
private static final long serialVersionUID = 1L;
JTable testTable = new JTable();
MyTableModel tableModel1 = new MyTableModel(1);
private boolean notRepaint = false;
int start = 0;
JScrollPane scrollPane = new JScrollPane();
private Timer timmer = new Timer(200, new ActionListener() {
public void actionPerformed(ActionEvent e) {
Random indexRandom = new Random();
final int index = indexRandom.nextInt(50);
Random valRandom = new Random();
final int val = valRandom.nextInt(600);
SwingUtilities.invokeLater(new Runnable() {
public void run() {
notRepaint = false;
TestTableScreen.this.update(index + "|" + val);
public TestTableScreen(String title) {
this.title = title;
init();
tableModel1.setTabelName(title);
public void startTime() {
timmer.start();
public String getTitle() {
return title;
public void update(String updateStr) {
String[] val = updateStr.split("\\|");
if (val.length == 2) {
int index = Integer.valueOf(val[0]);
List vals = tableModel1.getVector();
if (vals.size() > index) {
vals.set(index, val[1]);
// tableModel1.fireTableRowsUpdated(index, index);
} else {
vals.add(val[1]);
// tableModel1.fireTableRowsUpdated(vals.size() - 1, vals.size() - 1);
tableModel1.fireTableDataChanged();
public TableModel getTableModel() {
return tableModel1;
public void init() {
testTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
testTable.setRowSelectionAllowed(true);
this.testTable.setModel(tableModel1);
int[] width = { 160, 80, 45, 98, 60, 88, 87, 88, 80, 70, 88, 80, 75, 87, 87, 41, 88, 82, 75, 68, 69 };
TableColumnModel columnModel = testTable.getColumnModel();
for (int i = 0; i < width.length; i++) {
columnModel.getColumn(i).setPreferredWidth(width[i]);
testTable.setRowHeight(20);
tableModel1.fireTableDataChanged();
this.setLayout(new BorderLayout());
TableColumnModel columnMode2 = testTable.getColumnModel();
int[] width2 = { 200 };
for (int i = 0; i < width2.length; i++) {
columnMode2.getColumn(i).setPreferredWidth(width2[i]);
scrollPane.getViewport().add(testTable);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
this.add(scrollPane, BorderLayout.CENTER);
class MyTableModel extends DefaultTableModel {
public List list = new ArrayList();
String titles[] = new String[] { "袨怓1", "袨怓2", "袨怓3", "袨怓4", "袨怓5", "袨怓6", "袨怓7", "袨怓8", "袨怓9", "袨怓10", "袨怓11",
"袨怓12", "袨怓13", "袨怓14", "袨怓15", "袨怓16", "袨怓17", "袨怓18", "袨怓19", "袨怓20", "袨怓21" };
String tabelName = "";
int type_head = 0;
int type_data = 1;
int type = 1;
public MyTableModel(int type) {
super();
this.type = type;
for (int i = 0; i < 50; i++) {
list.add(i);
public void setTabelName(String name) {
this.tabelName = name;
public int getRowCount() {
if (list != null) {
return list.size();
return 0;
public List getVector() {
return list;
public int getColumnCount() {
if (type == 0) {
return 1;
} else {
return titles.length;
public String getColumnName(int c) {
if (type == 0) {
return "head";
} else {
return titles[c];
public boolean isCellEditable(int nRow, int nCol) {
return false;
public Object getValueAt(int r, int c) {
if (list.size() == 0) {
return null;
switch (c) {
default:
if (type == 0) {
return r + " " + c + " test ";
} else {
return list.get(r) + " " + c;
public boolean isNotRepaint() {
return notRepaint;
public void setNotRepaint(boolean notRepaint) {
this.notRepaint = notRepaint;
public class TestPanel extends JPanel {
protected String title = "";
protected boolean needRepaint = false;
protected boolean isFirstOpen = true;
public String getTitle() {
return title;
public void setNeedRepaint(boolean flag) {
this.needRepaint = flag;
public boolean isNeedRepaint() {
return needRepaint;
public boolean isFirstOpen() {
return isFirstOpen;
public void setFirstOpen(boolean isFirstOpen) {
this.isFirstOpen = isFirstOpen;
public class TestJLableScreen extends TestPanel {
private static final long serialVersionUID = 1L;
private JLabel[] allLables = new JLabel[20];
private Timer timmer = new Timer(20, new ActionListener() {
public void actionPerformed(ActionEvent e) {
Random indexRandom = new Random();
final int index = indexRandom.nextInt(10);
Random valRandom = new Random();
final int val = valRandom.nextInt(600);
SwingUtilities.invokeLater(new Runnable() {
public void run() {
TestJLableScreen.this.setNeedRepaint(true);
TestJLableScreen.this.update(index + "|" + val);
public TestJLableScreen(String title) {
this.title = title;
init();
public void startTime() {
timmer.start();
public String getTitle() {
return title;
public void update(String updateStr) {
String[] val = updateStr.split("\\|");
if (val.length == 2) {
int index = Integer.valueOf(val[0]);
allLables[index * 2 + 1].setText(val[1]);
public void init() {
this.setLayout(new GridLayout(10, 2));
boolean flag = true;
for (int i = 0; i < allLables.length; i++) {
allLables[i] = new JLabel() {
// public void setText(String text) {
// super.setText(text);
// // System.out.println(" setText " + getTitle() + " ; " + this.getName());
public void paint(Graphics g) {
super.paint(g);
// System.out.println(" paint " + getTitle() + " ; " + this.getName());
// public void repaint() {
// super.repaint();
// System.out.println(" repaint " + getTitle() + " ; " + this.getName());
allLables[i].setName("" + i);
if (i % 2 == 0) {
allLables[i].setText("Name " + i + " : ");
} else {
allLables[i].setOpaque(true);
if (flag) {
allLables[i].setBackground(Color.YELLOW);
flag = false;
} else {
allLables[i].setBackground(Color.CYAN);
flag = true;
allLables[i].setText(i * 8 + "");
for (int i = 0; i < allLables.length; i++) {
this.add(allLables[i]);
public class CustomeInternalFrame extends JInternalFrame {
protected TestPanel panel;
public CustomeInternalFrame() {
this("", false, false, false, false);
public CustomeInternalFrame(String title) {
this(title, false, false, false, false);
public CustomeInternalFrame(String title, boolean resizable) {
this(title, resizable, false, false, false);
public CustomeInternalFrame(String title, boolean resizable, boolean closable) {
this(title, resizable, closable, false, false);
public CustomeInternalFrame(String title, boolean resizable, boolean closable, boolean maximizable) {
this(title, resizable, closable, maximizable, false);
public CustomeInternalFrame(String title, boolean resizable, boolean closable, boolean maximizable,
boolean iconifiable) {
super(title, resizable, closable, maximizable, iconifiable);
public TestPanel getPanel() {
return panel;
public void setPanel(TestPanel panel) {
this.panel = panel;i had the same problem with buttons and it seemed that i overlayed my button with something else...
so check that out first do you put something on that excact place???
other problem i had was the VAJ one --> VisualAge for Java (terrible program)
it does strange tricks even when you don't use the drawing tool...
dunno 2 thoughts i had... check it out...
SeJo -
Retrieving values entered in a JTable
Hi!
I have made a sudoku solver as many others, but in the purpose of learning recursion, and now I am implementing GUI to that program. I have bean strugling to set up a table that shows the sudokutable, and most of all how to recieve the values entered into the table. I have looked at forums and search at google, but all the topics on this is not good enough. I just simply do not understand what they mean. Most often they just say: "Just paste this code in and it will turn out as intended". I want to know how it works.
I have added the code below:
import javax.swing.*;
import javax.imageio.*;
import java.awt.*;
import java.awt.event.*;
import easyIO.*;
import java.util.*;
import java.io.*;
* Klassen Oblig3 som inneholder main metoden som starter programmet.
* Dette er Utsynen for programmet.
* @Param ru - Peker til klassen Rute.
* @Param br - Peker til klassen Brett.
* @Param skrivebord - En ny desktpoPane som representerer hovedvinduet..
public class Oblig3 extends JFrame implements ActionListener {
Rute ru = new Rute();
Brett br = new Brett(ru);
ImageIcon icon;
Image image;
JDesktopPane skrivebord;
* Konstrukt�ren Oblig3 som setter opp hovedvinduet.
* @Param skjemrStorelse - Lagrer st�relsen p� skjermen.
public Oblig3() {
super("Oblig3");
int innrykk = 400;
Dimension skjermStorelse = Toolkit.getDefaultToolkit().getScreenSize();
setBounds(innrykk, innrykk, skjermStorelse.width - innrykk*3, skjermStorelse.height - innrykk*2);
skrivebord = new JDesktopPane()
Image im = (new ImageIcon("bilder/panzer.gif")).getImage();
public void paintComponent(Graphics g){
g.drawImage(im,0,0,this);
setContentPane(skrivebord);
setJMenuBar(lagMenyList());
skrivebord.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);
} // Slutt p� konstrukt�ren Oblig3
* JMenuBar metoden som gir menyen til hovedvinduet.
* @Param menyList - Peker p� et MenuBar objekt.
* @Param meny# - Menyene p� menylisten.
* @Param menyObjekt - Et valg p� gitt meny.
protected JMenuBar lagMenyList() {
JMenuBar menyList = new JMenuBar();
// F�rste menyen
JMenu meny1 = new JMenu("Fil");
meny1.setMnemonic(KeyEvent.VK_F);
menyList.add(meny1);
// Gruppe1 med JMenuObjekt
JMenuItem menyObjekt = new JMenuItem("�pne brett", new ImageIcon("bilder/folder.gif"));
menyObjekt.setMnemonic(KeyEvent.VK_O);
menyObjekt.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, ActionEvent.CTRL_MASK));
menyObjekt.setActionCommand("�pne brett");
menyObjekt.addActionListener(this);
meny1.add(menyObjekt);
menyObjekt = new JMenuItem("Spare brett", new ImageIcon("bilder/floppy.gif"));
menyObjekt.setMnemonic(KeyEvent.VK_S);
menyObjekt.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, ActionEvent.CTRL_MASK));
menyObjekt.setActionCommand("Spare brett");
menyObjekt.addActionListener(this);
meny1.add(menyObjekt);
meny1.addSeparator();
menyObjekt = new JMenuItem("Exit");
menyObjekt.setMnemonic(KeyEvent.VK_ESCAPE);
menyObjekt.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, ActionEvent.CTRL_MASK));
menyObjekt.setActionCommand("Exit");
menyObjekt.addActionListener(this);
meny1.add(menyObjekt);
// Lage den andre menyen
JMenu meny2 = new JMenu("Edit");
meny1.setMnemonic(KeyEvent.VK_E);
menyList.add(meny2);
// Gruppe2 med JMenObjekt
menyObjekt = new JMenuItem("L�s Brett");
menyObjekt.setMnemonic(KeyEvent.VK_L);
menyObjekt.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_L, ActionEvent.CTRL_MASK));
menyObjekt.setActionCommand("L�s Brett");
menyObjekt.addActionListener(this);
meny2.add(menyObjekt);
menyObjekt = new JMenuItem("Lag eget brett");
menyObjekt.setMnemonic(KeyEvent.VK_L);
menyObjekt.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_L, ActionEvent.ALT_MASK));
menyObjekt.setActionCommand("Lag eget brett");
menyObjekt.addActionListener(this);
meny2.add(menyObjekt);
// Lage den tredje menyen
JMenu meny3 = new JMenu("Hjelp");
meny1.setMnemonic(KeyEvent.VK_H);
menyList.add(meny3);
// Gruppe3 med JMenObjekt
menyObjekt = new JMenuItem("Version?");
menyObjekt.setActionCommand("Version?");
menyObjekt.addActionListener(this);
meny3.add(menyObjekt);
menyObjekt = new JMenuItem("www.dresas.com");
menyObjekt.setActionCommand("www.dresas.com?");
menyObjekt.addActionListener(this);
meny3.add(menyObjekt);
return menyList;
} // Slutt p� JMenuBar metoden.
* Metode som lytter p� menyval mm.
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand().equals("�pne brett")) {
lesFraFil();
} else if (e.getActionCommand().equals("L�s Brett")) {
losning();
} else if (e.getActionCommand().equals("Exit")) {
System.exit(0);
} else if (e.getActionCommand().equals("Version?")) {
version();
} else if (e.getActionCommand().equals("www.dresas.com")) {
link();
} else if (e.getActionCommand().equals("Lag eget brett")) {
lagEgetBrett();
} // Slutt p� if-else-if setning.
* Metoden lesFraFil som ber om navn p� fil fra bruker
* via grensesnittet.
protected void lesFraFil() {
final String losFraFil = JOptionPane.showInputDialog(null, "Skriv inn navn p� filen.");
svarLesFraFil(losFraFil + ".txt");
} // Slutt p� metoden losFraFil
* Metoden svarLesFaFil som gir resultat p� inlesning fra fil.
protected void svarLesFraFil(String filnavn) {
boolean rF = br.lesBrettFraFil(filnavn);
if(rF == true) {
JOptionPane.showMessageDialog(this, "Filen er lest inn");
} else {
JOptionPane.showMessageDialog(this, "Filen ble ikke lest inn,\n (husk sm� og store bokstaver)");
} // Slutt p� if-else
} // Slutt p� metoden svarLosFraFil
* Metoden losning som gir resultat p� l�st brett.
protected void losning() {
ru.provAlleSifferMegOgResten(0);
br.skrivLosning();
} // Slutt p� metoden losning
protected void version() {
JOptionPane.showMessageDialog(null, "Dette er version 0.7");
protected void link() {
OpenBrowser op = new OpenBrowser();
op.displayURL("www.dresas.com");
} // Slutt p� metoden link
* Metoden lagEgetBrett som lar brukeren tegne sitt eget
* brett og l�se det.
* @Param ramme - Peker p� objektet av klassen InternRamme som
* setter opp det interne vinduet.
protected void lagEgetBrett() {
int boksBredde = 3;
int boksHojde = 3;
int brettStorelse = 9;
boolean b1 = true;
while (b1) {
boksBredde = Integer.parseInt(JOptionPane.showInputDialog(null, "Skriv inn Bredde p� boksen. (2-4)"));
if (boksBredde > 1 && boksBredde < 5) {
boksHojde = Integer.parseInt(JOptionPane.showInputDialog(null, "Skriv inn H�jde p� boksen. (3-4)"));
if (boksHojde > 2 && boksHojde < 5) {
b1 = false;
} else {
JOptionPane.showMessageDialog(null, "M� vaere mellom 3 og 4.");
continue;
} else {
JOptionPane.showMessageDialog(null, "M� vaere mellom 2 og 4.");
continue;
brettStorelse = boksBredde * boksHojde;
InternRamme ramme = new InternRamme(brettStorelse * 16, brettStorelse * 16);
Object[][] data = new Object[brettStorelse][brettStorelse];
for (int i = 0;i < brettStorelse;i++) {
for (int j = 0; j < brettStorelse;j++) {
data[i][j] = 0;
String[] columnNames = new String[brettStorelse];
for (int i = 0; i < brettStorelse;i++) {
int b = 1 + i;
columnNames[i] = String.valueOf(b);
JTable sudokuTabell = new JTable(data, columnNames);
sudokuTabell.setGridColor (new Color (tilfeldig(256), tilfeldig(256), tilfeldig(256)));
sudokuTabell.setFont(new Font ("Tahoma", Font.PLAIN, 16));
setVisible(true);
ramme.add(sudokuTabell);
ramme.setVisible(true);
skrivebord.add(ramme);
try {
ramme.setSelected(true);
} catch (java.beans.PropertyVetoException e) {}
} // Slutt p� klassen lagEgetBrett
* Metode som returnerer tilfeldigt verdi st�rre en 0 og mindre
* en maks.
public static int tilfeldig (int maks) {
return (int) (Math.random () * maks);
* Metoden utsyn som tegner opp programmet p� skjermen.
* @Param frame - Peker p� objektet Oblig3.
private static void utsyn() {
//Create and set up the window.
Oblig3 frame = new Oblig3();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Display the window.
frame.setVisible(true);
} // Slutt p� metoden utsyn.
* Metoden main som starter programmet.
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
utsyn();
} // Slutt p� metoden main.
} // Slutt p� klassen Oblig3.
* Brukt av Oblig3
class InternRamme extends JInternalFrame {
static int tellOpneRammer = 0;
static final int xOffset = 30, yOffset = 30;
InternRamme(int bredde, int hojde) {
super("Lag eget Brett #" + (++tellOpneRammer),
true, //resizable
true, //closable
true, //maximizable
true);//iconifiable
//...Create the GUI and put it in the window...
//...Then set the window size or call pack...
setSize(bredde,hojde);
//Set the window's location.
setLocation(xOffset*tellOpneRammer, yOffset*tellOpneRammer);
}Here is the method in mind, translated...
protected void ConstructOwnBoard() {
int boxWidth = 3;
int boxHeight = 3;
int BoardSize = 9;
boolean b1 = true;
while (b1) {
boxWidth = Integer.parseInt(JOptionPane.showInputDialog(null, "Enter Width. (2-4)"));
if (boxWidth > 1 && boxWidth < 5) {
boxHeight = Integer.parseInt(JOptionPane.showInputDialog(null, "Enter Height. (3-4)"));
if (boxHeight > 2 && boxHeight < 5) {
b1 = false;
} else {
JOptionPane.showMessageDialog(null, "Must be btween 3 og 4.");
continue;
} else {
JOptionPane.showMessageDialog(null, "Must be between 2 og 4.");
continue;
BoardSize = boxWidth * boxHeight ;
InternalFrame frame = new InternalFrame(BoardSize * 16, BoardSize * 16);
Object[][] data = new Object[BoardSize ][BoardSize ];
for (int i = 0;i < BoardSize ;i++) {
for (int j = 0; j < BoardSize ;j++) {
data[i][j] = 0;
String[] columnNames = new String[BoardSize ];
for (int i = 0; i < BoardSize ;i++) {
int b = 1 + i;
columnNames[i] = String.valueOf(b);
JTable sudokuTable = new JTable(data, columnNames);
sudokuTable.setGridColor (new Color (tilfeldig(256), tilfeldig(256), tilfeldig(256)));
sudokuTable.setFont(new Font ("Tahoma", Font.PLAIN, 24));
TableColumn column = null;
for (int i = 0; i < BoardSize ; i++) {
column = sudokuTable.getColumnModel().getColumn(i);
column.setMinWidth(25);
column.setMaxWidth(25);
column.setResizable(false);
setVisible(true);
frame.add(sudokuTable);
frame.setVisible(true);
desktop.add(ramme);
try {
frame.setSelected(true);
} catch (java.beans.PropertyVetoException e) {}
} // end of class
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