Enable column some column in a JTable

Hi guys i have to enable just one column named QUANTITE in my JTable...i read that i must overwrite the isCellIditable() method to do so..
here my code:
final int QUANTITE = 2;
public boolean isCellEditable(int row, int column){
if(column == QUANTITE){
return true;
else{
return false;
help me please :P

ok...but hehe the problem is that anyway all columns
are editable...Make sure that your JTable does really use your TableModel but not something else

Similar Messages

How to disable/enable the cells for editing column wise in JTable in java?

Hi All,
Can any one tell me how to disable the cells for editing by column wise in JTable?
Here depending upon the radio button selected, I need 2 disable some columns for editing
and enable some columns for editing?
how can I do tat using JAVA?
Any sample code is of great help to me.
Thanks in Advance

http://java.sun.com/docs/books/tutorial/uiswing/components/table.html
~

[Forum FAQ] SharePoint 2013: Extracting values from a multi-value enabled lookup column and merge values to a multi-value enabled column

For some business requirements, users want to extract values from a multi-value enabled lookup column
and add items to another list based on each separate value. In contrast, others want to find duplicate values in the list and merge associated values to a multi-value enabled column and then
add items to another list based on the merged value. All of these can be achieved using SharePoint Designer 2013 Workflow.
How to extract values from a multi-value enabled lookup column and add items to another list based
on each separate value using SharePoint Designer 2013.
Important actions: Loop Shape; Utility Actions
Three scenarios
Things to note
Steps to create Workflow
How to merge values to a multi-value enabled column and add item to another list based on the
merged value using SharePoint Designer 2013.
Important actions: Call HTTP Web Service; Build Dictionary
Things to note
Steps to create Workflow
How to
extract values from a multi-value enabled lookup column and
add items to another list based on each separate value using SharePoint Designer 2013.
For example, they have three lists as below. They want to
extract values from the Destinations column
in Lookup2 and add items to Lookup3 based on each country and set Title to current item: ID.
Lookup1:
Title (Single line of text)
Lookup2:
Title (Single line of text), Destinations (Lookup; Get information from: Lookup1 in Title column).\
Lookup3:
Title (Single line of text), Country (Single line of text).
Important action
1. Loop Shape: SharePoint Designer 2013 support two types of loops: loop n times and loop with condition.
Loops must also conform to the following rules:
Loops must be within a stage, and stages cannot be within a loop.
Steps may be within a loop.
Loops may have only one entry and one exit point.
2. Utility Actions: It contains many actions, such as ‘Extract Substring from Index of String’ and ‘Find substring in String’.
Three scenarios
We need to loop through the string returned from the look up column and look for commas. There are three
scenarios:
1. No comma but string is non-empty so there is only one country.
2. At least one comma so there is at least two or more countries to loop.
3. In the loop we have consumed all the commas so we have found the last country.
Things to note
There are two things to note:
1. "Find string in string (output to Variable:index)" will return -1 if doesn't find
the searched for string.
2. In the opening statement "Set Variable: Countries to Current Item:Destinations" set the return
field as "Lookup Values, Comma Delimited".
Steps to create Workflow
Create a custom list named Lookup1.
Create a custom list named Lookup2, add column: Destinations (Lookup; Get information from: Lookup1 in Title column).
Create a custom list named Lookup3, add column: Country (Single line of text).
Create a workflow associated to Lookup2.
Add conditions and actions:
Start the workflow automatically when an item is created.
Add item to Lookup2, then workflow will be started automatically and create multiple items to lookup3.
See the below in workflow History List:
How to merge values to a multi-value enabled column and add item to another list based on the
merged value using SharePoint Designer 2013
For example, they have three lists as below. They want to find duplicate values in the Title column in
Lookup3 and merge country column to a multi-value enabled column and then add item to lookup2 and set the Title to Current Item: Title.
Lookup1:
Title (Single line of text)
Lookup3:
Title (Single line of text), Country (Single line of text).
Lookup2:
Title (Single line of text), Test (Single line of text).
Important actions
"Call HTTP Web Service"
action: In SharePoint 2013 workflows, we can call a web service using a new action introduced in SharePoint 2013 named Call HTTP Web Service. This action
is flexible and allows you to make simple calls to a web service easily, or, if needed, you can create more complex calls using HTTP verbs as well as allowing you to add HTTP headers.
“Build Dictionary"
action:
The Dictionary variable type is a new variable type in the SharePoint 2013 Workflow.
The following are the three actions specifically designed for the Dictionary variable type: Build Dictionary, Count Items in a Dictionary and Get an Item from a Dictionary.
The "Call HTTP Web Service" workflow action would be useless without the new "Dictionary" workflow action.
Things to note
The
HTTP URI is set to https://sitename/_api/web/lists/GetByTitle('listname')/items?$orderby=Id%20desc and the HTTP method is set to “GET”. Then the list will be sort by Id in descending order.
Use Get
d/results(0)/Id form
Variable: ResponseContent (Output to
Variable: maxid) to get the Max ID.
Use Set
Variable: minid to Current List:ID to get the Min ID.
Use Copy from
Variable: destianation , starting at
1 (Output to
Variable: destianation) to remove the space.
Steps to create Workflow
Create a custom list named Lookup1.
Create a custom list named Lookup2, add column: Test (Single line of text).
Create a custom list named Lookup3, add column: Country (Single line of text).
Create a workflow associated to Lookup3.
Add a new "Build Dictionary" action
to define the http request header:
Add a Call HTTP Web Serviceaction, click on
this and paste your http request.
To associate the
RequestHeader variable, select the Call action property,
set the
RequestHeaders property to
RequestHeader:
In the Call action, click on
response and associate the response to a new
variable: ResponseContent (of type Dictionary).
After the Call action add Get item from Dictionary action to get the Max ID.
Add Set Workflow Variable action to get the Min ID.
Add Loop Shape (Loop with Condition) to get all the duplicate titles and integrate them to a string.
Create item in Lookup2.
The final Stage should look like this:
Start the workflow automatically when an item is created.
Add item to Lookup3, then workflow will be started automatically and create item to lookup2.
See the below in workflow History List:
References
SharePoint Designer 2013 - Extracting values from a multi-value enabled lookup column into a dictionary as separate items:
http://social.technet.microsoft.com/Forums/en-US/97d34468-1b53-4741-88b0-958472f8ca9a/sharepoint-designer-2013-extracting-values-from-a-multivalue-enabled-lookup-column-into-a
Workflow actions quick reference (SharePoint 2013 Workflow platform):
http://msdn.microsoft.com/en-us/library/jj164026.aspx
Understanding Dictionary actions in SharePoint Designer 2013:
http://msdn.microsoft.com/en-us/library/office/jj554504.aspx
Working with Web Services in SharePoint 2013 Workflows using SharePoint Designer 2013:
http://msdn.microsoft.com/en-us/library/office/dn567558.aspx
Calling the SharePoint 2013 Rest API from a SharePoint Designer Workflow:
http://sergeluca.wordpress.com/2013/04/09/calling-the-sharepoint-2013-rest-api-from-a-sharepoint-designer-workflow/

GREAT info, but it may be helpful to note that when replacing a portion of the variable "Countries" with a whitespace character, you may cause the workflow to fail in a few specific cases (certain lookup fields will not accept this and will automatically
cancel). I only found this out when recreating your workflow on a similar, but much more complex list set.
To resolve this issue, I used another utility action (Extract Substring from Index of List) to clear out the whitespace. I configured it as "Copy from
Variable: Countries, starting at
1 (Output to Variable: Countries), which takes care of this issue in those few cases.
Otherwise, WOW! AWESOME JOB! Thanks! :)

How to fix the value of first column in the JTable in java swing for every

Hi ,
I have a swing page that have table panel in which there is a table of size 7x4 now when I click on the perticulat row then that row data will displayin the table like that the selected row become the second column in the new table and the fist column of this table will remain constant for all the entry but the second column update according to the roe which is selected .How it is possible .
Thanks in Advace,
anu

One thing you can do is to prevent the user from editing that column and programatically supply the values of that column yourself.
JTable table = new JTable() {
   public boolean isCellEditable(int row, int col) {
       if(col == 0) {
          return false;
       return super.isCellEditable(row, col);
};This allows you to prevent the user from editing the column information so you can supply some sort of a default value for the column always
ICE

Looking for component: flexible rows like columns in a JTable

Hello,
I need a swing component to display several rows which can be moved up and down, the height resized, interchanged with the mouse like the columns in a JTable. But there is no need for columns. I think there is no standard swing component.
Any ideas, resource hints?
Thanks, Ulrich

One more piece of advice. It is not very easy to get "pre-written custom components". Most developers do things to meet their own needs and these may not be exactly what you are looking for. The best thing to do is to try to develop this yourself. It will give you loads of experience and in later programmes you may write, based on the experience you obtained from the "pain-staking" development process you'll know how to go round these problems quicker and may be able to help others also.
So just start writing some stuff. You may end up finishing sooner than you think. And remember forum members are always ready to help with problems (accompanied by minimal code examples of the actual problem).
ICE

Help for adjusting columns of a JTAble in a Table Model

Hello community,
In order to have a good display of by DataBase in a JTable, I've wrote some code to adjust columns in function of datas. Those datas are displayed with a TableModel ( which I've declared in a class JDBCAdapter ).
When I start my application, I call adjustColumns(), and all is great but when I add information to my DB and display it, the columns of my JTable return to default width...
So I want to incorporate my function adjustColumns in my TableModel, and I need help...
     void adjustColumns()
     // Ajuste les colonnes aux donnes pour que tout soit visible
     int nbRow,nbCol;
     nbRow = JTable1.getRowCount();
     nbCol = test.getColumnCount();
     for ( int i = 0; i < nbCol; i++ )
     com.sun.java.swing.table.TableColumn column = null;
     column = JTable1.getColumnModel().getColumn(i);
     int dataLength = 0;
     for ( int j = 0; j< nbRow; j++ )
     FontMetrics fm;
     int dataLengthTmp;
     String valueTable;
     fm = JTable1.getFontMetrics(JTable1.getFont());
     if ( test.getValueAt(j, i) == null )
     System.out.println("Valeur nulle...");
     dataLengthTmp = 0;
     else
     valueTable = test.getValueAt(j, i).toString();
     dataLengthTmp = fm.stringWidth(valueTable);
     System.out.println(valueTable + " = " + dataLengthTmp);
     if ( dataLengthTmp > dataLength )
     dataLength = dataLengthTmp;
     if ( dataLength != 0 )
column.setWidth(dataLength + 5);
else
column.sizeWidthToFit();
JTable1.setModel(test);
JTable1.repaint();
import java.util.Vector;
import java.sql.*;
import com.sun.java.swing.table.AbstractTableModel;
import com.sun.java.swing.event.TableModelEvent;
public class JDBCAdapter extends AbstractTableModel {
Connection connection;
Statement statement;
ResultSet resultSet;
String[] columnNames = {};
Vector rows = new Vector();
ResultSetMetaData metaData;
public JDBCAdapter(String url, String driverName,
String user, String passwd) {
try {
Class.forName(driverName);
System.out.println("Ouverture de la connexion a la base de donnee...");
connection = DriverManager.getConnection(url, user, passwd);
statement = connection.createStatement();
catch (ClassNotFoundException ex) {
System.err.println("Cannot find the database driver classes.");
System.err.println(ex);
catch (SQLException ex) {
System.err.println("Cannot connect to this database.");
System.err.println(ex);
public void executeQuery(String query) {
if (connection == null || statement == null) {
System.err.println("There is no database to execute the query.");
return;
try {
resultSet = statement.executeQuery(query);
metaData = resultSet.getMetaData();
int numberOfColumns = metaData.getColumnCount();
columnNames = new String[numberOfColumns];
// Get the column names and cache them.
// Then we can close the connection.
for(int column = 0; column < numberOfColumns; column++) {
columnNames[column] = metaData.getColumnLabel(column+1);
// Get all rows.
rows = new Vector();
while (resultSet.next()) {
Vector newRow = new Vector();
for (int i = 1; i <= getColumnCount(); i++) {
newRow.addElement(resultSet.getObject(i));
rows.addElement(newRow);
// close(); Need to copy the metaData, bug in jdbc:odbc driver.
fireTableChanged(null); // Tell the listeners a new table has arrived.
catch (SQLException ex) {
System.err.println(ex+" query = "+query);
public void executeUpdate(String query) {
if (connection == null || statement == null) {
System.err.println("There is no database to execute the query.");
return;
try {
statement.executeUpdate(query);
// close(); Need to copy the metaData, bug in jdbc:odbc driver.
fireTableChanged(null); // Tell the listeners a new table has arrived.
catch (SQLException ex) {
System.err.println(ex+" query = "+query);
public void close() throws SQLException {
System.out.println("Fermeture de la connection a la base de donnee... Bye !");
resultSet.close();
statement.close();
connection.close();
protected void finalize() throws Throwable {
close();
super.finalize();
// Implementation of the TableModel Interface
// MetaData
public String getColumnName(int column) {
if (columnNames[column] != null) {
return columnNames[column];
} else {
return "";
public Class getColumnClass(int column) {
int type;
try {
type = metaData.getColumnType(column+1);
catch (SQLException e) {
return super.getColumnClass(column);
switch(type) {
case Types.CHAR:
case Types.VARCHAR:
case Types.LONGVARCHAR:
return String.class;
case Types.BIT:
return Boolean.class;
case Types.TINYINT:
case Types.SMALLINT:
case Types.INTEGER:
return Integer.class;
case Types.BIGINT:
return Long.class;
case Types.FLOAT:
case Types.DOUBLE:
return Double.class;
case Types.DATE:
return java.sql.Date.class;
default:
return Object.class;
public boolean isCellEditable(int row, int column) {
try {
return metaData.isWritable(column+1);
catch (SQLException e) {
return false;
public int getColumnCount() {
return columnNames.length;
// Data methods
public int getRowCount() {
return rows.size();
public Object getValueAt(int aRow, int aColumn) {
Vector row = (Vector)rows.elementAt(aRow);
return row.elementAt(aColumn);
public String dbRepresentation(int column, Object value) {
int type;
if (value == null) {
return "null";
try {
type = metaData.getColumnType(column+1);
catch (SQLException e) {
return value.toString();
switch(type) {
case Types.INTEGER:
case Types.DOUBLE:
case Types.FLOAT:
return value.toString();
case Types.BIT:
return ((Boolean)value).booleanValue() ? "1" : "0";
case Types.DATE:
return value.toString(); // This will need some conversion.
default:
return "\""+value.toString()+"\"";
public void setValueAt(Object value, int row, int column) {
try {
String tableName = metaData.getTableName(column+1);
// Some of the drivers seem buggy, tableName should not be null.
if (tableName == null) {
System.out.println("Table name returned null.");
String columnName = getColumnName(column);
String query =
"update "+tableName+
" set "+columnName+" = "+dbRepresentation(column, value)+
" where ";
// We don't have a model of the schema so we don't know the
// primary keys or which columns to lock on. To demonstrate
// that editing is possible, we'll just lock on everything.
for(int col = 0; col<getColumnCount(); col++) {
String colName = getColumnName(col);
if (colName.equals("")) {
continue;
if (col != 0) {
query = query + " and ";
query = query + colName +" = "+
dbRepresentation(col, getValueAt(row, col));
System.out.println(query);
System.out.println("Not sending update to database");
// statement.executeQuery(query);
catch (SQLException e) {
// e.printStackTrace();
System.err.println("Update failed");
Vector dataRow = (Vector)rows.elementAt(row);
dataRow.setElementAt(value, column);
Thanks to help me.

Hi,
OK. I have read your code sample again. It looks like the JDBCAdapter class is reloading table data in the executeQuery method. Why not call adjustColumns at the end of this method after the new rows and columns are loaded? Perhaps it also should be called at the end of executeUpdate. Have you tried doing that?
I would still set
JTable1.setAutoCreateColumnsFromModel (false); to prevent Java from readjusting the size automatically at some other time.
regards,
Terry

Adding mouse listener to the column header of a column in a JTable

Hi
I want to add a mouse listener to the column header of the 3rd column in a JTable. I dont find any appropriate method to do this. The code I have written to do this is below. But on using this code, the mouselistener is invoked if I click on any column header. Can anyone please help me to fix this.
table.getTableHeader().addMouseListener(new MouseAdapter() {
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/* some actions */
}

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* Hide_Columns.java
* This code contains a table model that allows you to
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I want to hide some of the columns of my JTable. Plz tell me how to do it?
Thanks in advance

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Wouldn't you still have to modify the TableModel so that the getValueAt method doesn't return the wrong value?No, the view of the table is not necessarily the same as the order of the data in the TableModel. What happens, for example when a column of the table is reordered? Well, each TableColumn contains a reference to a specific column in the TableModel. So the TableColumnModel is used by the table to control the view of the table and the TableColumn will get the data from the correct column. This way you can reorder TableColumns or remove TableColumns withouth affecting the TableModel only the view of the table.
My FixedColumnScrollPane example uses this feature:
http://forum.java.sun.com/thread.jspa?forumID=257&threadID=500055
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I don;t want to write a for loop to say getValueAt(row, 1) eg for 2nd column. You could always write a custom TableModel that stores the data in the format you want it. It would probably be about 50 lines of code. Or you could write a loop in 3 lines of code. I'll let you decide which approach you want to take.

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Can anyone point me to a topic on how to customize a popup menu for column headers in JTable? Specifically, I want to add things like "auto-size column" and "hide column".
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Matt

Right-click on your table. Then go to Advanced->Runtime Shortcut Menu->Edit.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

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thatz all .
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Hello Friends,
I need a help in JTable.
I want to have a Radio button as a column of a JTable.(The Other Columns should be Strings).
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I would appreciate if u give me the code for this, as it is very urgent.
Thanks in Advance,
Regards,
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Hi,
use a TableCellRenderer and CellEditor as described in http://java.sun.com/docs/books/tutorial/uiswing/components/table.html
Propably you need to track the selected button yourself, e.g. by using an int value representing the row selected.

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Regards,
Derreck

Hi,
table.setColumnselectionInterval(index0,index1);
The above line will suffice your requirement.
Cheers,
Gokul.

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Hi there,
does anybody knows a way how to set the size of a specified column in a JTable without changinge the size of the other columns?
thx anyway
Errraddicator

You've got to change the JTable's column resizing policy to prevent the other columns resizing:
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