Priblem with JTable constructer with Vector!!!

Hi,
I have a big problem,
I defined my table,
in an interface i have;
Vector rdata = new Vector();
Vector cnames = new Vector();
Object rowdatas = {"a","b","c"}
and in my class i defined
JTable mytable = new JTable(rdata , cnames);
and in an other interface i have a function ,
void setRow(JTable table, Object[] rowdatas)
Vector onerow = new Vector();
for(int i=0; i<rowdatas.length ; i++)
onerow.addElement(rowdatas);
row.addElement(onerow);
but when i write,
...setRow(mytablem,rowdatas )
then the added row in my table is
| a | a | a |
i.e however my vector have the correct datas, in table all the row datas are the first data of the vector.Why!
Plese help,Thanks... :(

Sorry!You are wright,I had written wrong.
The correct codes are :
in an interface i have;
Vector rdata = new Vector();
Vector cnames = new Vector();
Object rowdatas = {"a","b","c"}
and in my class i defined
JTable mytable = new JTable(rdata , cnames);
and in an other interface i have a function ,
void setRow(JTable table, Object[] rowdatas)
Vector onerow = new Vector();
for(int i=0; i<rowdatas.length ; i++)
onerow.addElement(rowdatas);
row.addElement(onerow);
but when i write,
...setRow(mytablem,rowdatas )
then the added row in my table is
| a | a | a |
i.e however my vector have the correct datas, in table all the row datas are the first data of the vector.Why!
,also you can rewrite the as
Vactor rowdatas = new Vector();
rowdatas.addelement(a);
rowdatas.addelement(b);
rowdatas.addelement(c);
and then add this vector to the rdata ...

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Hi,
Seems u r new to progrmming.Well u used Jbuilder to write.U wrote good debug statments but forgot to write deubg statment or printstacktrace in excpetions.
ok here is answer for ur problem.
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import javax.swing.table.*;
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import java.awt.event.*;
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sreeni,
[email protected]

Problem hotspot with Jtable

i am sorry may english, my English is not very good, my natural language is Spanish.
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class miModeloTabla extends javax.swing.table.AbstractTableModel
public int getColumnCount()
return vector_columnas.size();
public int getRowCount()
return vector_datos==null ? 0 : vector_datos.size();
public Object getValueAt(int row, int col)
int total_columna = ((java.util.Vector)
(vector_datos.elementAt(row))).size() + 1;
if (total_columna > col)
return ((java.util.Vector)
(vector_datos.elementAt(row))).elementAt(col);
}else
return null;
// The default implementations of these methods in
// AbstractTableModel would work, but we can refine them.
public String getColumnName(int columna)
String indice_str =(String)
((Object[])vector_columnas.elementAt(columna))[1];
int indice_vector_campos = Integer.parseInt(indice_str);
return (String)((Object[])
vector_campos.elementAt(indice_vector_campos))[3];
public Class getColumnClass(int columna)
// {return getValueAt(0,columna).getClass();}
String indice_str =(String)
((Object[])vector_columnas.elementAt(columna))[1];
int indice_vector_campos = Integer.parseInt(indice_str);
return (Class)obtieneTipoColumna(
(String)((Object[])
vector_campos.elementAt(indice_vector_campos))[29]);
public boolean isCellEditable(int fila, int columna)
if (puede_editar)
String indice_str =(String)
((Object[])vector_columnas.elementAt(columna))[1];
int indice_vector_campos = Integer.parseInt(indice_str);
if (((String)
((Object[])
vector_campos.elementAt(
indice_vector_campos))[18]).equals("true"))
return true;
else
return false;
}else return false;
/* public void setValueAt(Object aValue, int fila, int columna)
if (puede_editar)
((java.util.Vector)
(vector_datos.elementAt(fila))).elementAt(columna) = aValue;
fireTableCellUpdated(fila, columna);
// public static void main(String[] args) {
// new TableExample3();
//final de clase
public void asignaDatosTabla(java.util.Vector vector_campos_usar,
java.util.Vector vector_campos_usar_i,
java.util.Vector vector_datos,
java.util.Vector vector_datos_campos)
this.vector_campos_usar = vector_campos_usar;
this.vector_campos_usar_i = vector_campos_usar_i;
this.vector_datos = vector_datos;
this.vector_datos_campos = vector_datos_campos;
// asignaDatosCamposIniciales();
// mimodelotabla.fireTableDataChanged();
// configuraColumna(vista_tabla);
// javax.swing.table.TableModel modelo = vista_tabla.getModel();
mimodelotabla.fireTableDataChanged();
// vista_tabla.repaint();
vista_tabla.requestFocus();
javax.swing.ListSelectionModel listseleccion = vista_tabla.getSelectionModel();
listseleccion.setLeadSelectionIndex(0);
vista_tabla.setSelectionModel(listseleccion);
//javax.swing.ListSelectionModel lsm =
// (javax.swing.ListSelectionModel)e.getSource();
// asignaEscuchadores();
public void iniciaVectorDatos()
java.util.Vector vectornulo;
manejoparametros.datos_leidos_tablas.clear();
if (!vector_columnas.isEmpty())
for(int i=0;i<30;i++)
vectornulo = new java.util.Vector();
for (int j = 0;j<vector_columnas.size();j++)
vectornulo.addElement(null);
vector_datos.addElement(vectornulo);
private void asignaEscuchadores()
vista_tabla.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
if (puede_seleccionar) { // true by default
modelo_fila_sel = vista_tabla.getSelectionModel();
modelo_fila_sel.addListSelectionListener(
new javax.swing.event.ListSelectionListener() {
public void valueChanged(
javax.swing.event.ListSelectionEvent e)
javax.swing.ListSelectionModel lsm =
(javax.swing.ListSelectionModel)e.getSource();
int fila_sel = lsm.getMinSelectionIndex();
// DEBO BUSCAR UNA FORMA DE DETERMINAR SI EL VECTOR DE CAMPOS TIENE DATOS
if (!vector_datos_campos.isEmpty())// !=null)
manejopantalla.asignaDatosPantalla(
(java.util.TreeMap)
vector_datos_campos.elementAt(fila_sel),
campos,
vector_campos);
/*Aqui funcionan para cambiar los campos de arriba de la forma
que esta abajo
((javax.swing.JTextField)campos[0]).setText(
(String)vista_tabla.getValueAt(fila_sel,0));
((javax.swing.JTextField)campos[1]).setText((String)vista_tabla.getValueAt(fila_sel,1));
//v if (lsm.isSelectionEmpty()) {
//v System.out.println("No rows are selected.");
//v } else {
//v int selectedRow = lsm.getMinSelectionIndex();
//v System.out.println("Row " + selectedRow
//v + " is now selected.");
//v }
} else {
vista_tabla.setRowSelectionAllowed(false);
vista_tabla.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent e) {
fila_sel = vista_tabla.getSelectedRow();
if (e.getClickCount() ==2)
asignaDatosSeleccionados(fila_sel);
salirPrograma();
// System.out.println("FILA SEL --> " + fila_sel);
/*Aqui va chequeo de seleccion
((javax.swing.JTextField)campos[0]).setText((String)vista_tabla.getValueAt(fila_sel,0));
((javax.swing.JTextField)campos[1]).setText((String)vista_tabla.getValueAt(fila_sel,1));
vista_tabla.addKeyListener(new java.awt.event.KeyAdapter()
public void keyPressed(java.awt.event.KeyEvent e)
// char c = e.getKeyChar();
int keycode = e.getKeyCode();
if (keycode == 10)
fila_sel = vista_tabla.getSelectedRow();
asignaDatosSeleccionados(fila_sel);
salirPrograma();
// System.out.println("FILA SEL --> " + fila_sel);
public void configuraColumna(javax.swing.JTable tabla)
int tamano;
for (int i=0;i<vector_columnas.size();i++)
String indice_str =(String)
((Object[])vector_columnas.elementAt(i))[1];
int indice_vector_campos = Integer.parseInt(indice_str);
/*Aqui se asigna en render de cada celda esto permite
fijar el font de las celdas, el borde, fijar, estado
colores,etc. Debo crear uno propio para tener mas control*/
javax.swing.table.DefaultTableCellRenderer
renderer = new javax.swing.table.DefaultTableCellRenderer();
/*Debo agregar un campo en el archivo de configuracion para
saber como voy alinear el campo (derecha,izquierda,centro)*/
renderer.setHorizontalAlignment(renderer.LEFT);
//javax.swing.JLabel.LEFTNTER_ALIGNMENT);
// renderer.setText((String)((Object[])
// vector_campos.elementAt(
// indice_vector_campos))[3]);
if (!UtilitariosGenerales.isCampoBlanco(((String)((Object[])
vector_campos.elementAt(
indice_vector_campos))[26])))
tamano = Integer.parseInt(((String)((Object[])
vector_campos.elementAt(
indice_vector_campos))[26]));
}else
tamano = 10;
/*Debo crear mi propio tipo de editor de celdas, para formatear
los datos debo llamarlo aqui, ahi tomo en cuenta el tipo de
datos que voy a usar (JCombo, JcheckBox, JTextField)*/
javax.swing.table.TableCellEditor editor;
if (
/* ((String)((Object[])
vector_campos.elementAt(indice_vector_campos))[2]).equals("JCheckBox")
((String)((Object[])
vector_campos.elementAt(indice_vector_campos))[29]).equals("Boolean")
javax.swing.JCheckBox checkbox = new javax.swing.JCheckBox();
editor = new javax.swing.DefaultCellEditor(checkbox);
else
javax.swing.JTextField jtextfield = new javax.swing.JTextField();
editor = new javax.swing.DefaultCellEditor(jtextfield);
javax.swing.table.TableColumn columna = new
javax.swing.table.TableColumn(
i,tamano,renderer,editor);
tabla.addColumn(columna);
public void obtieneColumnasTabla()
vector_columnas = new java.util.Vector();
int indice_vector;
String[] informacion_columna;
for (int i=0;i<vector_campos.size();i++)
if (!
((String)((Object[])vector_campos.elementAt(i))[2]).equals(
"JTable"))
continue;
informacion_columna = new String[2];
informacion_columna[0] = (String)((Object[])vector_campos.elementAt(i))[3];
informacion_columna[1] = String.valueOf(i);
vector_columnas.addElement(informacion_columna);
public Object obtieneTipoColumna(String tipo_columna)
String[] arreglo_tipo = {"String","Long","Integer","Double","Boolean"};
int i = java.util.Arrays.binarySearch(arreglo_tipo,tipo_columna);
switch (i)
case 0:
return String.class;
case 1:
return Long.class;
case 2:
return Integer.class;
case 3:
return Double.class;
case 4:
return Boolean.class;
default:
return String.class;
class FormattedCellRenderer extends javax.swing.table.DefaultTableCellRenderer
     protected java.text.Format m_format;
     public FormattedCellRenderer(java.text.Format format) {
          m_format = format;
     public java.awt.Component getTableCellRendererComponent(
javax.swing.JTable table,
          Object value, boolean isSelected, boolean hasFocus,
          int nRow, int nCol)
          return super.getTableCellRendererComponent(table,
               value==null ? null : m_format.format(value),
               isSelected, hasFocus, nRow, nCol);
class FormattedCellEditor extends javax.swing.DefaultCellEditor
     public FormattedCellEditor(final javax.swing.JFormattedTextField
               formattedTextField) {
          super(formattedTextField);
System.out.println(delegate);
          formattedTextField.removeActionListener(delegate);
          delegate = new EditorDelegate() {
               public void setValue(Object value) {
                    formattedTextField.setValue(value);
               public Object getCellEditorValue() {
                    return formattedTextField.getValue();
          formattedTextField.addActionListener(delegate);
          formattedTextField.setBorder(null);
public void asignaDatosSeleccionados(int fila)
if (fila >=0 && fila < vector_datos.size())
manejoparametros.isSeleccionada = true;
java.util.TreeMap map_datos_sel = new java.util.TreeMap();
int indice_vector;
int total_tabla=-1;
int total_campos = -1;
for (int i=0;i<vector_campos_usar.size();i++)
// String[] arreglo_campo_usar = new String[2];
// arreglo_campo_usar = (String[])vector_campos_usar.elementAt(i);
// indice_vector = Integer.parseInt(arreglo_campo_usar[0]);
/*AQUI DEBO CLASIFICAR SI ES FIJO O ES DE LA TABLA*/
if (!
((String)((Object[])vector_campos_usar_i.elementAt(i))[2]).equals(
"JTable"))
if (!UtilitariosGenerales.isCampoBlanco(
((String)((Object[])vector_campos_usar_i.elementAt(i))[28]) ) &&
!((String)((Object[])vector_campos_usar_i.elementAt(i))[40]).equals(
"true"))
if (!map_datos_sel.containsKey(
((Object[])vector_campos_usar_i.elementAt(i))[28]))
total_campos++;
Object valores = ((java.util.TreeMap)
vector_datos_campos.elementAt(fila)).get(
((Object[])vector_campos_usar_i.elementAt(
i))[28]);
map_datos_sel.put( ((Object[])vector_campos_usar_i.elementAt(i))[28],
valores);
// ((java.util.Vector)
// vector_datos_campos.elementAt(fila)).elementAt(total_campos) );
// continue;
for (int i =0;i<vector_campos.size();i++)
if (
((String)((Object[])vector_campos.elementAt(i))[2]).equals(
"JTable"))
total_tabla++;
if (!UtilitariosGenerales.isCampoBlanco(
((String)((Object[])vector_campos.elementAt(i))[28]) ))
if (!map_datos_sel.containsKey(
((Object[])vector_campos.elementAt(i))[28]))
map_datos_sel.put( ((Object[])vector_campos.elementAt(i))[28],
((java.util.Vector)
vector_datos.elementAt(fila)).elementAt(i) );
manejoparametros.fila_seleccionada = fila;
manejoparametros.map_datos_seleccionados = map_datos_sel;
public void obtieneDatosSeleccionados_ant(int fila)
if (fila >=0 && fila < vector_datos.size())
manejoparametros.isSeleccionada = true;
java.util.TreeMap map_datos_sel = new java.util.TreeMap();
int indice_vector;
int total_tabla=-1;
for (int i=0;i<vector_campos_usar.size();i++)
// String[] arreglo_campo_usar = new String[2];
// arreglo_campo_usar = (String[])vector_campos_usar.elementAt(i);
// indice_vector = Integer.parseInt(arreglo_campo_usar[0]);
/*AQUI DEBO CLASIFICAR SI ES FIJO O ES DE LA TABLA*/
if (!
((String)((Object[])vector_campos_usar_i.elementAt(i))[2]).equals(
"JTable"))
continue;
else
total_tabla++;
if (!UtilitariosGenerales.isCampoBlanco(
((String)((Object[])vector_campos_usar_i.elementAt(i))[28]) ))
if (!map_datos_sel.containsKey(
((Object[])vector_campos_usar_i.elementAt(i))[28]))
map_datos_sel.put( ((Object[])vector_campos_usar_i.elementAt(i))[28],
((java.util.Vector)
vector_datos.elementAt(fila)).elementAt(total_tabla) );
int total_campos = -1;
for (int i=0;i<vector_campos.size();i++)
if (!UtilitariosGenerales.isCampoBlanco(
((String)((Object[])vector_campos.elementAt(i))[28]) ) &&
!((String)((Object[])vector_campos.elementAt(i))[2]).equals(
"JEncadena"))
if (!map_datos_sel.containsKey(
((Object[])vector_campos.elementAt(i))[28]))
total_campos++;
String valores = (String)((java.util.TreeMap)
vector_datos_campos.elementAt(fila)).get(
((Object[])vector_campos.elementAt(
i))[28]);
map_datos_sel.put( ((Object[])vector_campos.elementAt(i))[28],
valores);
// ((java.util.Vector)
// vector_datos_campos.elementAt(fila)).elementAt(total_campos) );
manejoparametros.fila_seleccionada = fila;
manejoparametros.map_datos_seleccionados = map_datos_sel;
public void salirPrograma()
try
if (frame_usar instanceof javax.swing.JDialog)
((javax.swing.JDialog)frame_usar).setName("botones");
((javax.swing.JDialog)frame_usar).dispose();
}else
((javax.swing.JFrame)frame_usar).setName("botones");
((javax.swing.JFrame)frame_usar).dispose();
}catch (Exception ex)
System.out.println(ex.toString());
}

Problem with String in a Vector

I'm making a small hangman game. And I got a problem with putting words in a Vector... This is the code... Can someone tell me what I'm doing wrong?
// First I define it.
Vector Words;
// Then add the words
Vector Words = new Vector();
Words.add(new String("HELLO"));
Words.add(new String("GOOD BYE"));
// When I try to get a string from the Vector I use this.
// The program compiles but when I try to run it I get NullPointerExeption here
W = (String) Words.elementAt(0);

Not sure since I cant see all of your code but looks like this might be your problem:
// First I define it.
Vector Words; //<-- here you define a Vector named Words that is null
// Then add the words
Vector Words = new Vector(); //<-- here you define another vector named Words that holds a reference to a new Vector. This is a different reference than the one created above so you should probably remove the "Vector" part from the beginning of this line. Is this a local variable to a method and the one before is a global variable?
//Here you probably access the locally created Words vector which is initialized
Words.add(new String("HELLO"));
// When I try to get a string from the Vector I use this.
// The program compiles but when I try to run it I get NullPointerExeption here
W = (String) Words.elementAt(0); //<--and here my guess is that this statement is inside another method than the one with the local Words vector defined. Thus this one accesses the global Words Vector that is never initalized and is Null. And that gives you the NullPointerException.
So try changing the statement
Vector Words = new Vector();
to
Words = new Vector();
or just remove it totally and move the Vector creation to the place where you introduce the global variable.
Of course I might be totally wrong since I cant see all of your code but that is my guess.
Hope it helps,
-teka

Selection Problem with JTable

Hello,
i have a selection problem with JTable. I want to allow only single cell selection and additionally limit the selection to the first column.
I preffered the style from MS Outlook Express where you can select the email accounts to edit.
It is a table like this:
Account name |   Type |   ...
--------------|---------|---------------------
Hotmail       |   POP3 |
GMX           |   IMAP |The selection should be only avaibable at 'Hotmail' or 'GMX' - not at 'POP3', 'IMAP' or as complete row selection.
Please help me!
Thanks.
Warlock

Maybe this will helpimport java.awt.*;
import javax.swing.*;
public class Test3 extends JFrame {
public Test3() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container content = getContentPane();
    String[] head = {"One", "Two"};
    String[][] data = {{"R1-C1", "R1-C2"}, {"R2-C1", "R2-C2"}};
    JTable jt = new JTable(data, head);
    jt.getColumnModel().setSelectionModel(new MyTableSelectionModel());
    content.add(new JScrollPane(jt), BorderLayout.CENTER);
    jt.setCellSelectionEnabled(true);
    jt.setRowSelectionAllowed(false);
    jt.setColumnSelectionAllowed(false);
    setSize(300, 300);
    setVisible(true);
public static void main(String[] arghs) { new Test3(); }
class MyTableSelectionModel extends DefaultListSelectionModel {
public void setSelectionInterval(int index0, int index1) {
    super.setSelectionInterval(0, 0);
}

Any body please can solve my problem that iam facing with JTable

Dear sir,
Iam doing an educational product using Swing as front end in that
iam using JTables. And back end iam using sqlserver. With jtable iam
facing very serious problem the problem is actually iam entering the values
in all the columns after that iam pressing the save button its not
saving but if i click on any of the columns and try to save its saving.
please anybody can solve my problem.Please if a piece of code is there ill
be very thankful to you. my mailid is [email protected]
regards
surya

The problem is, the cellEditor does not know that editing has stopped and therefore has not updated the model (where the data actually resides). When you click off the cell to another cell, the first cell knows it must be done editing because you are leaving it. If you click a button (or anything other than another cell), the cell being edited has no knowledge of this. You need to call stopCellEditing() on the cell editor and your problem will be solved. To do this, put the following method into your code and call it when you click the button to clear, save or whatever you need to do.
public void ceaseEditing() { int row = this.getEditingRow();
int col = this.getEditingColumn();
if (row != -1 && col != -1)
this.getCellEditor(row,col).stopCellEditing();
}Hope this helped...

Plz tell me how to use JSpinner with JTable

I have retrieve records from database but as the number of records(rows) are more than 1000 , i want to use JSpinner with JTable . plz solve my problem by giving the appropriate code for the same.

hi
check this links
http://www.exampledepot.com/egs/javax.swing.table/CustRend.html
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html
hope this will help you.. this explains exactly what you want.
regards
Aniruddha

Issue with JTable

Hi,
I have a issue with JTable. I am reading an array and populating the cells in the JTable. After editing the cell values, on clicking a button, I update the value in to an array. The probelm is that after editing the value in the cell, if I don't use tab or enter key and move the focus away from the cell, I dont get the updated value when using the getValueAt method. Pleease let me know if there is any workaround for this behaviour.
Thanks,
Baskar N

Just so you understand why that code snippit works, you have to stop or cancel editing before you can get the updated value of a cell.

Where can I find a JClient demo with JTable ?

Hi,
Where can I find a good JClient demo with JTable and Bc4J?
Thanks
Friedhold

Friedhold,
there exist a JTable example on otn.oracle.com/products/jdev
For example ther exists a component binding demo
http://otn.oracle.com/sample_code/products/jdev/jclient/JClientBindingDemo.zip
that also shows a table
and a sorter demo that shows how to sort JTables with JClient
http://otn.oracle.com/sample_code/products/jdev/jclient/TableSorter.zip
Finally, a demo that shows how to replace a table cell by a combo box using the table cell renderer
http://otn.oracle.com/sample_code/products/jdev/jclient/JTableCombo.zip
Frank

Help with JTable column width

Hi,
I'm trying to resize my JTable columns with this code, but it's not working. What I am doing wrong?
for (int i = 0; i < table.getColumnModel().getColumnCount(); i++) {
TableColumn tc = table.getColumnModel().getColumn(i);
int width = (i == 0)? 10 : table.getWidth()/2 - 10; // three columns
tc.setPreferredWidth(width);
Thanks,
Andr�

Now my problem is that using either of these methods
is they don't carry the user's selected column width
through updates.It sounds like the change event your table model is firing is causing the entire table to be rebuilt. I would guess that you are firing fireTableStructureChanged() which would cause the entire table to be rebuilt (columns, cell values, etc.) Just fire a change event for the minimum necessary. If you can't identify what data in your table has changed (to fire cell or row change events), but the structure (columns) of the table hasn't changed, just fire fireTableDataChanged(). This will cause the cells to be redrawn with the new values, but shouldn't cause the columns to be rebuilt and resized.

Capitalise/close/delete asset under construction with zero value

Hi,
I have an AUC (aset under construction) with a zero value but I am unable to clear it as such.
How can I remove the open AUC from the reports and close/delete it?
Thanks
Keeley

Hi,
Go to t-code AS02. On the "*deactivation on" field under "General" Tab enter the current date or the last posting date recorded for the asset. Save the changes.
Regards,
Melu

Another problem with JTable

Hi,
I have encountered a problem with JTable, i am trying to display some 15 columns and their values , one of the columns value is null, then the JTable is not displaying its value from this column(which is with null value) onwards.
Can anybody assiss me in this matter.
Regards
khiz_eng

I don't know If I can fix your problem, but
I know just that it works on my PC.... It's very very
slow... I don't know how to insert PageSetUp option... I have to study the problem.....
However I don't think it's a hard problem....
I want ask to you if you have found some problems when you are in Editing mode in a cell.....
in the jdk1.2 version I could save while was in editing mode using the editingStopped method.
It permit to update all data .... also the data in the cell I was editing.
in the jdk 1.3 if I use this method It doesn't work properly... It maybe destroy the content object in the Cell..... because I'm able to print all the table except the editing cell (it throw an exception...)
What's changed????
I don't know...
Can u help me?

Priblem with JTable constructer with Vector!!!

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