JTable sorting by more columns
Hi everybody
according to the tablesorter from the tutorial, is there anyone who knows how to sort by more than one column (means i sort by the first column let's say numbers 1 |C, 1 | A, 1|B, ..., then i want to sort the by the second column too, so the result should be 1 | A , 1 | B , 1| C ...).
thanks for any advice
best
markus
Sure, read the comments in the TableSorter class, it explains how to use the Shift and Ctrl keys to aid in sorting.
Similar Messages
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JTable sorting with frozen columns
Hi All,
I have implemented a table with two frozen columns by using two Jtables within a JScrollpane. I've added a TableRowSorter to each table (the fixed and the scrollable one). The first two columns are removed from the main JTable's columnModel and the other columns are removed from the fixed JTable's columnModel. The sorting works fine but currently works on the two tables seperately. They both have the same table model which is one i implemented by extending AbstractTableModel. How can i link up the two tables so that they sort together?
Thanksusing the same instance of TableRowSorter with both tables fixed it
-
hi!
I receive data from a database and create a JTable.
Now I would like to sort the Data.
Example:
Table with ID, Name, Weight, Height
If I click on the column named "weight" the table should be sorted by the weight...
Is there a possibility to do that?
RegardsRead this section from the Swing tutorial on "How to Use Tables" (actually read all sections). It has sample code for sorting:
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html -
Can numbers sort by more than one column? How?
Can numbers sort by more than one column? How?
Open the "Sort & Filter" options:
Then add columns. You can set sort ASCENDING or DESCSANDING then drag the items to set the which column is sorted first -
I have Table with 5 columns and say 3 rows.
I want to sort the first column.Let us say values in the first column are..CDF, MPC and ABC. so when i click on the column header now the values should be ABC, CDF and MPC..If i click on it again it should sort again reversely..Like MPC, CDF and ABC..We already have example in Java Tutorial TableSorterDemo.java, TableSorter.java..But that sort the column only once.That is it does the sorting and Place ABC, CDF and MPC in order.But when i click on the header again then no sorting takes place where as i want them to show up as MPC,CDF and ABC.Unless u sort the other column and come back to the first column again it doesn't fulfill that requirement.Any help on this is highly appreciated..
Thanks Much in advanceEric,
Thanks for the reply but iam little confused. Can u
elaborate and help me more
Thanks MuchTake a look at TableSorter.java, at the bottom, where it adds a mouse click listener to the header. The applicable line is:
int shiftPressed = e.getModifiers()&InputEvent.SHIFT_MASK;
boolean ascending = (shiftPressed == 0); It doesn't reverse sorting. By default, it uses ascending sort. Shift-Click will do descending sort. To do what you want, you should add an accessor method to determine the current value of TableSorter.ascending, then use it to determing the value to use when calling TableSorter.sortByColumn. -
We used to be able to sort by multiple columns/rows at once by right clicking on the header and choosing show more options-how do we do that in the new Numbers? It doesn't appear anywhere. Do I now have to sort massive tables by each column one at a time now? Also there used to be an easier way to merge/unmerge cells without me having to go to the table menu each time. Am I missing something?
Multiple column sort is a missing feature in the new version. Hopefully soon to return. You can do a multicolumn sort by sorting one at a time in reverse order of importance.
For merging and unmerging cells, I select the cells and right click to bring up the contextual menu. Merge and unmerge are on the menu. You could also create keyboard shortcuts for Merge Cells and Unmerge Cells in the Table menu. -
JTable sorting - problem when adding elements (complete code inside)
I�m writing this email with reference to a recent posting here but this time with the code example. (I apologize for the duplicated posting � this time it will be with the code)
Problem: when adding more elements to the JTable (sorted) the exception: ArrayIndexOutOfBoundsException is thrown.
Example: If the elements in the table are 10 and then the user requests for 8 � the table will produce the correct result. However, if the user will ask for 11 items (>10) the exception will be thrown.
The program: The program below (compiles and running). A JTable is constructed with 3 items, when you click the button - the return result should be 4 items - this will generate the error, WHY?
I would highly appreciate your thoughts why this is happening and most importantly � how to fix it.
Thanks a lot
3 files:
(1) TableSorterDemo
(2) Traveler
(3)TableSorter
//TableSorterDemo:
package sorter;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
* TableSorterDemo is like TableDemo, except that it
* inserts a custom model -- a sorter -- between the table
* and its data model. It also has column tool tips.
public class TableSorterDemo implements ActionListener
private JPanel superPanel;
private JButton clickMe = new JButton("click me to get diff data");
private boolean DEBUG = false;
private DefaultListModel defaultListModel;
private JTable table;
public TableSorterDemo()
superPanel = new JPanel(new BorderLayout());
defaultListModel = new DefaultListModel();
init1();
TableSorter sorter = new TableSorter(new MyTableModel(defaultListModel)); //ADDED THIS
table = new JTable(sorter); //NEW
sorter.setTableHeader(table.getTableHeader()); //ADDED THIS
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
//Set up tool tips for column headers.
table.getTableHeader().setToolTipText(
"Click to specify sorting; Control-Click to specify secondary sorting");
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this panel.
superPanel.add("Center", scrollPane);
superPanel.add("South",clickMe);
clickMe.addActionListener(this);
public JPanel getPanel()
return superPanel;
public void init1()
//in real life this will be done from the db
Traveler a = new Traveler();
Traveler b = new Traveler();
Traveler c = new Traveler();
a.setFirstName("Elvis");
a.setLastName("Presley");
a.setSprot("Ping Pong");
a.setNumYears(3);
a.setVegetarian(true);
b.setFirstName("Elton");
b.setLastName("John");
b.setSprot("Soccer");
b.setNumYears(2);
b.setVegetarian(true);
c.setFirstName("shaquille");
c.setLastName("oneil");
c.setSprot("Golf");
c.setNumYears(22);
c.setVegetarian(true);
defaultListModel.addElement(a);
defaultListModel.addElement(b);
defaultListModel.addElement(c);
public void init2()
//in real life this will be done from the db
Traveler d = new Traveler();
Traveler e = new Traveler();
Traveler f = new Traveler();
Traveler g = new Traveler();
d.setFirstName("John");
d.setLastName("Smith");
d.setSprot("Tennis");
d.setNumYears(32);
d.setVegetarian(true);
e.setFirstName("Ron");
e.setLastName("Cohen");
e.setSprot("Baseball");
e.setNumYears(12);
e.setVegetarian(true);
f.setFirstName("Donald");
f.setLastName("Mac Novice");
f.setSprot("Vallyball");
f.setNumYears(1);
f.setVegetarian(true);
g.setFirstName("Eithan");
g.setLastName("Superstar");
g.setSprot("Vallyball");
g.setNumYears(21);
g.setVegetarian(true);
defaultListModel.addElement(d);
defaultListModel.addElement(e);
defaultListModel.addElement(f);
defaultListModel.addElement(g);
class MyTableModel extends AbstractTableModel
private DefaultListModel myModel;
public MyTableModel(DefaultListModel m)
myModel=m;
private String[] columnNames = {"First Name",
"Last Name",
"Sport",
"# of Years",
"Vegetarian"};
public int getColumnCount()
return columnNames.length;
public int getRowCount()
return myModel.size();
public String getColumnName(int column)
return getNames()[column];
public String[] getNames()
String[] names = {"First Name", "Last Name", "Sport", "# of Years", "Vegetarian"};
return names;
public Object getValueAt(int row, int col)
return distributeObjectsInTable(row, col, (Traveler) myModel.elementAt(row));
public Object distributeObjectsInTable(int row, int col, Traveler tr)
switch(col)
case 0:
return tr.getFirstName();
case 1:
return tr.getLastName();
case 2:
return tr.getSprot();
case 3:
return new Integer(tr.getNumYears());
case 4:
return new Boolean (tr.isVegetarian());
default:
return "Error";
public Class getColumnClass(int c)
return getValueAt(0, c).getClass();
private static void createAndShowGUI()
//Make sure we have nice window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
JFrame frame = new JFrame("TableSorterDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
TableSorterDemo newContentPane = new TableSorterDemo();
newContentPane.getPanel().setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane.getPanel());
//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();
public void actionPerformed(ActionEvent ae)
if (ae.getSource()==clickMe)
defaultListModel.removeAllElements();
init2(); //if the size of the model was less than 2 items - the result will be ok.
//in other words, if you commens the last 2 rows of this method (addElement(f) & g)
// the result will be fine.
table.updateUI();
}//(2) Traveler
package sorter;
public class Traveler
private String firstName;
private String lastName;
private String sprot;
private int numYears;
private boolean vegetarian;
public String getFirstName()
return firstName;
public String getLastName()
return lastName;
public int getNumYears()
return numYears;
public String getSprot()
return sprot;
public boolean isVegetarian()
return vegetarian;
public void setFirstName(String firstName)
this.firstName = firstName;
public void setLastName(String lastName)
this.lastName = lastName;
public void setNumYears(int numYears)
this.numYears = numYears;
public void setSprot(String sprot)
this.sprot = sprot;
public void setVegetarian(boolean vegetarian)
this.vegetarian = vegetarian;
}//(3)TableSorter
package sorter;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.List;
import javax.swing.*;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.*;
public class TableSorter extends AbstractTableModel {
protected TableModel tableModel;
public static final int DESCENDING = -1;
public static final int NOT_SORTED = 0;
public static final int ASCENDING = 1;
private static Directive EMPTY_DIRECTIVE = new Directive(-1, NOT_SORTED);
public static final Comparator COMPARABLE_COMAPRATOR = new Comparator() {
public int compare(Object o1, Object o2) {
return ((Comparable) o1).compareTo(o2);
public static final Comparator LEXICAL_COMPARATOR = new Comparator() {
public int compare(Object o1, Object o2) {
return o1.toString().compareTo(o2.toString());
private Row[] viewToModel;
private int[] modelToView;
private JTableHeader tableHeader;
private MouseListener mouseListener;
private TableModelListener tableModelListener;
private Map columnComparators = new HashMap();
private List sortingColumns = new ArrayList();
public TableSorter() {
this.mouseListener = new MouseHandler();
this.tableModelListener = new TableModelHandler();
public TableSorter(TableModel tableModel) {
this();
setTableModel(tableModel);
public TableSorter(TableModel tableModel, JTableHeader tableHeader) {
this();
setTableHeader(tableHeader);
setTableModel(tableModel);
private void clearSortingState() {
viewToModel = null;
modelToView = null;
public TableModel getTableModel() {
return tableModel;
public void setTableModel(TableModel tableModel) {
if (this.tableModel != null) {
this.tableModel.removeTableModelListener(tableModelListener);
this.tableModel = tableModel;
if (this.tableModel != null) {
this.tableModel.addTableModelListener(tableModelListener);
clearSortingState();
fireTableStructureChanged();
public JTableHeader getTableHeader() {
return tableHeader;
public void setTableHeader(JTableHeader tableHeader) {
if (this.tableHeader != null) {
this.tableHeader.removeMouseListener(mouseListener);
TableCellRenderer defaultRenderer = this.tableHeader.getDefaultRenderer();
if (defaultRenderer instanceof SortableHeaderRenderer) {
this.tableHeader.setDefaultRenderer(((SortableHeaderRenderer) defaultRenderer).tableCellRenderer);
this.tableHeader = tableHeader;
if (this.tableHeader != null) {
this.tableHeader.addMouseListener(mouseListener);
this.tableHeader.setDefaultRenderer(
new SortableHeaderRenderer(this.tableHeader.getDefaultRenderer()));
public boolean isSorting() {
return sortingColumns.size() != 0;
private Directive getDirective(int column) {
for (int i = 0; i < sortingColumns.size(); i++) {
Directive directive = (Directive)sortingColumns.get(i);
if (directive.column == column) {
return directive;
return EMPTY_DIRECTIVE;
public int getSortingStatus(int column) {
return getDirective(column).direction;
private void sortingStatusChanged() {
clearSortingState();
fireTableDataChanged();
if (tableHeader != null) {
tableHeader.repaint();
public void setSortingStatus(int column, int status) {
Directive directive = getDirective(column);
if (directive != EMPTY_DIRECTIVE) {
sortingColumns.remove(directive);
if (status != NOT_SORTED) {
sortingColumns.add(new Directive(column, status));
sortingStatusChanged();
protected Icon getHeaderRendererIcon(int column, int size) {
Directive directive = getDirective(column);
if (directive == EMPTY_DIRECTIVE) {
return null;
return new Arrow(directive.direction == DESCENDING, size, sortingColumns.indexOf(directive));
private void cancelSorting() {
sortingColumns.clear();
sortingStatusChanged();
public void setColumnComparator(Class type, Comparator comparator) {
if (comparator == null) {
columnComparators.remove(type);
} else {
columnComparators.put(type, comparator);
protected Comparator getComparator(int column) {
Class columnType = tableModel.getColumnClass(column);
Comparator comparator = (Comparator) columnComparators.get(columnType);
if (comparator != null) {
return comparator;
if (Comparable.class.isAssignableFrom(columnType)) {
return COMPARABLE_COMAPRATOR;
return LEXICAL_COMPARATOR;
private Row[] getViewToModel() {
if (viewToModel == null) {
int tableModelRowCount = tableModel.getRowCount();
viewToModel = new Row[tableModelRowCount];
for (int row = 0; row < tableModelRowCount; row++) {
viewToModel[row] = new Row(row);
if (isSorting()) {
Arrays.sort(viewToModel);
return viewToModel;
public int modelIndex(int viewIndex)
return getViewToModel()[viewIndex].modelIndex;
private int[] getModelToView()
if (modelToView == null) {
int n = getViewToModel().length;
modelToView = new int[n];
for (int i = 0; i < n; i++) {
modelToView[modelIndex(i)] = i;
return modelToView;
// TableModel interface methods
public int getRowCount() {
return (tableModel == null) ? 0 : tableModel.getRowCount();
public int getColumnCount() {
return (tableModel == null) ? 0 : tableModel.getColumnCount();
public String getColumnName(int column) {
return tableModel.getColumnName(column);
public Class getColumnClass(int column) {
return tableModel.getColumnClass(column);
public boolean isCellEditable(int row, int column) {
return tableModel.isCellEditable(modelIndex(row), column);
public Object getValueAt(int row, int column) {
return tableModel.getValueAt(modelIndex(row), column);
public void setValueAt(Object aValue, int row, int column) {
tableModel.setValueAt(aValue, modelIndex(row), column);
// Helper classes
private class Row implements Comparable {
private int modelIndex;
public Row(int index) {
this.modelIndex = index;
public int compareTo(Object o) {
int row1 = modelIndex;
int row2 = ((Row) o).modelIndex;
for (Iterator it = sortingColumns.iterator(); it.hasNext();) {
Directive directive = (Directive) it.next();
int column = directive.column;
Object o1 = tableModel.getValueAt(row1, column);
Object o2 = tableModel.getValueAt(row2, column);
int comparison = 0;
// Define null less than everything, except null.
if (o1 == null && o2 == null) {
comparison = 0;
} else if (o1 == null) {
comparison = -1;
} else if (o2 == null) {
comparison = 1;
} else {
comparison = getComparator(column).compare(o1, o2);
if (comparison != 0) {
return directive.direction == DESCENDING ? -comparison : comparison;
return 0;
private class TableModelHandler implements TableModelListener {
public void tableChanged(TableModelEvent e) {
// If we're not sorting by anything, just pass the event along.
if (!isSorting()) {
clearSortingState();
fireTableChanged(e);
return;
// If the table structure has changed, cancel the sorting; the
// sorting columns may have been either moved or deleted from
// the model.
if (e.getFirstRow() == TableModelEvent.HEADER_ROW) {
cancelSorting();
fireTableChanged(e);
return;
// We can map a cell event through to the view without widening
// when the following conditions apply:
// a) all the changes are on one row (e.getFirstRow() == e.getLastRow()) and,
// b) all the changes are in one column (column != TableModelEvent.ALL_COLUMNS) and,
// c) we are not sorting on that column (getSortingStatus(column) == NOT_SORTED) and,
// d) a reverse lookup will not trigger a sort (modelToView != null)
// Note: INSERT and DELETE events fail this test as they have column == ALL_COLUMNS.
// The last check, for (modelToView != null) is to see if modelToView
// is already allocated. If we don't do this check; sorting can become
// a performance bottleneck for applications where cells
// change rapidly in different parts of the table. If cells
// change alternately in the sorting column and then outside of
// it this class can end up re-sorting on alternate cell updates -
// which can be a performance problem for large tables. The last
// clause avoids this problem.
int column = e.getColumn();
if (e.getFirstRow() == e.getLastRow()
&& column != TableModelEvent.ALL_COLUMNS
&& getSortingStatus(column) == NOT_SORTED
&& modelToView != null) {
int viewIndex = getModelToView()[e.getFirstRow()];
fireTableChanged(new TableModelEvent(TableSorter.this,
viewIndex, viewIndex,
column, e.getType()));
return;
// Something has happened to the data that may have invalidated the row order.
clearSortingState();
fireTableDataChanged();
return;
private class MouseHandler extends MouseAdapter {
public void mouseClicked(MouseEvent e) {
JTableHeader h = (JTableHeader) e.getSource();
TableColumnModel columnModel = h.getColumnModel();
int viewColumn = columnModel.getColumnIndexAtX(e.getX());
int column = columnModel.getColumn(viewColumn).getModelIndex();
if (column != -1) {
int status = getSortingStatus(column);
if (!e.isControlDown()) {
cancelSorting();
// Cycle the sorting states through {NOT_SORTED, ASCENDING, DESCENDING} or
// {NOT_SORTED, DESCENDING, ASCENDING} depending on whether shift is pressed.
status = status + (e.isShiftDown() ? -1 : 1);
status = (status + 4) % 3 - 1; // signed mod, returning {-1, 0, 1}
setSortingStatus(column, status);
private static class Arrow implements Icon {
private boolean descending;
private int size;
private int priority;
public Arrow(boolean descending, int size, int priority) {
this.descending = descending;
this.size = size;
this.priority = priority;
public void paintIcon(Component c, Graphics g, int x, int y) {
Color color = c == null ? Color.GRAY : c.getBackground();
// In a compound sort, make each succesive triangle 20%
// smaller than the previous one.
int dx = (int)(size/2*Math.pow(0.8, priority));
int dy = descending ? dx : -dx;
// Align icon (roughly) with font baseline.
y = y + 5*size/6 + (descending ? -dy : 0);
int shift = descending ? 1 : -1;
g.translate(x, y);
// Right diagonal.
g.setColor(color.darker());
g.drawLine(dx / 2, dy, 0, 0);
g.drawLine(dx / 2, dy + shift, 0, shift);
// Left diagonal.
g.setColor(color.brighter());
g.drawLine(dx / 2, dy, dx, 0);
g.drawLine(dx / 2, dy + shift, dx, shift);
// Horizontal line.
if (descending) {
g.setColor(color.darker().darker());
} else {
g.setColor(color.brighter().brighter());
g.drawLine(dx, 0, 0, 0);
g.setColor(color);
g.translate(-x, -y);
public int getIconWidth() {
return size;
public int getIconHeight() {
return size;
private class SortableHeaderRenderer implements TableCellRenderer {
private TableCellRenderer tableCellRenderer;
public SortableHeaderRenderer(TableCellRenderer tableCellRenderer) {
this.tableCellRenderer = tableCellRenderer;
public Component getTableCellRendererComponent(JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column) {
Component c = tableCellRenderer.getTableCellRendererComponent(table,
value, isSelected, hasFocus, row, column);
if (c instanceof JLabel) {
JLabel l = (JLabel) c;
l.setHorizontalTextPosition(JLabel.LEFT);
int modelColumn = table.convertColumnIndexToModel(column);
l.setIcon(getHeaderRendererIcon(modelColumn, l.getFont().getSize()));
return c;
private static class Directive {
private int column;
private int direction;
public Directive(int column, int direction) {
this.column = column;
this.direction = direction;
}The table listens to the TableModel for changes. Changing the table by adding/removing
rows or columns has no affect on its table model. If you make changes to the table model
the table will be notified by its TableModelListener and change its view. So tell
MyTableModel about the change of data:
public class TableSorterDemo implements ActionListener
MyTableModel tableModel;
public TableSorterDemo()
defaultListModel = new DefaultListModel();
init1();
tableModel = new MyTableModel(defaultListModel);
TableSorter sorter = new TableSorter(tableModel);
public void actionPerformed(ActionEvent ae)
if (ae.getSource()==clickMe)
defaultListModel.removeAllElements();
init2();
tableModel.fireTableStructureChanged();
} -
How to disable sorting for some columns in a ALV GRID?
Hi i have requirement where I have to disable sorting for some columns in a ALV GRID. i am using REUSE_ALV_GRID_DISPLAY function module.
Can anybody help me. how to acieve this? Any code snippets will really be appreciated.Hi,
I have tried this but not completely successful. I think this can be done using the OOPS method.
DATA: it_event_exit TYPE slis_t_event_exit.
DATA: w_exit TYPE slis_event_exit.
w_exit-ucomm = '&ODN'.
w_exit-before = 'X'.
CLEAR w_exit-after.
APPEND w_exit TO it_event_exit.
w_exit-ucomm = '&OUP'.
w_exit-before = 'X'.
CLEAR w_exit-after.
APPEND w_exit TO it_event_exit.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
i_callback_program = w_repid
i_callback_top_of_page = 'ALV_TOP_OF_PAGE'
i_callback_html_top_of_page = 'ALV_HTML_TOP_OF_PAGE'
i_callback_user_command = 'USER_COMMAND' <- User command form
is_layout = wm_layout
it_fieldcat = wt_fieldcat
it_events = i_events
it_event_exit = it_event_exit <- Need to fill
it_sort = wt_sort
i_default = 'X'
Now you can capture this events in the user command
FORM user_command USING r_ucomm LIKE sy-ucomm
rs_selfield TYPE slis_selfield.
IF r_ucomm = '&OUP' and rs_selfield-SEL_TAB_FIELD = 'Your field name'.
ENDIF.
ENDFORM. "user_command
In this form you will get the function code in 'r_ucomm' and the field selected for sorting in 'rs_selfield-SEL_TAB_FIELD'. But reseting 'r_ucomm' will not work.
May be somebody else can give some help on this.
But this will work if you follow the oop method.
Please see this document for more info.
http://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/abap/an easy reference for alv grid control.pdf
Thanks
Vinod -
Sorting by Multiple Columns in Numbers 3.0
The new Numbers 3.0 update has moved some stuff around I need, and can not find.
Where is "Reorganize"? The ability to sort multiple by columns. (e.g. Sort Ascending Column A, THEN Column B, THEN Column C)
mfthis didn't work for me - i have item, then price, then checkbox. using the formula just gave an amalgamation of the three cells.
Hi Saqib,
The very idea of the workaround is to give an amalgamation, more often called "concatenation", and then just sort on the column containing the concatenated "string."
As you've discovered, the =A&C&B formula only works if A,C, and B are all text. If you've got numbers in the mix then you have to pad them with leading zeros for them to sort as you want. That's easily done.
Let's say C is a number and A and B are strings. You could put somethng like this in column D:
=A&RIGHT("0000"&C,4)&B
It's certainly not convenient to have to add a new column and put in a formula. But this is not *that* difficult as a workaround until the day multcolumn sort is added back in.
SG -
I have a table with some entries. The table is a sortable one. I use the standard TableMap.java and TableSorter.java for sorting. The initialisation part consists of the following lines:
TableSorter sorter = new TableSorter(myTblModel);
JTable table = new JTable(sorter);
The problem I have is when I sort the table using the table column header, the rows gets sorted properly. However when I use getValueAt method to retrieve an object at a specified location, it always returns the object that was there before sorting. I dont know where am I going wrong? Can anyone help me please?
TIA,
SatishCheck out the link shown below:
http://forum.java.sun.com/thread.jsp?forum=57&thread=410651&tstart=0&trange=30
;o)
V.V.
PS: whatever you did that causes the result to be what you described could be an accidental discovery of a new technique! -
Defining sort on applet column
Requirement is to define the sorting on the column,
Normally in UI we have a columns as STATUS which can have values Green--- Red—Yellow
In UI if you click on column header. It will sort with either Green—Red ---yellow or yellow ---red—green which is ascending or descending order.
We need a change which need like this Green—yellow--- Red or Red –Yellow-Green..can this be done?Hello -
Is still an issue for you? if yes, then can provide give us a little more information;
1) What CZ Build are you using? See Doc ID 313691.1: How to determine build level of Oracle Configurator Runtime and Developer.
2) Can you provide a screen capture showing the User Interface with the colors?
Thanks, Daniel -
Sort-on-clicked-column in BC4J
Is there an easy way to create a sort-on-clicked-column in BC4J?
I was thinking about creating hyperlinks on the column headers with a URL-parameter added (for example param.name 'p_order_by'). Then this parameter could have values like 1,2,3 etc (=clicked column nr)
In the JSP I can read this parameter by means of:
<% if (request.getParameter(p_order_by) != null) {
String orderby = request.getParameter(p_order_by);
} else {
String orderby = "1";
%>
and alter my DataSource: orderbyclause="<%= orderby %>"
I assume this can work (I will test :), but I can imagine there is a more easy way to do this....
Thanks,
regards
StephanThere is definitely an easier way in later JDeveloper releases, but using the <jbo:* > tag library the way involves either using the orderbyclause property of the <jbo:DataSource> tag, or programmatically invoking a method in your ViewObject or ApplicationModule's public service interface that internally accomplishing the same thing which is to invoke the setOrderByClause() API on the view object in question.
-
How can I sort alphabetically three columns?
Hi to everybody!
I've got some problems sorting alphabetically three columns. If I try to sort one column it changes also the others. I want three independent columns and each of them must be sorted out alphabetically.
In Excel it's so easy: I just have to select the column and push the button "sort the column alphabetically". Why is that so difficult in numbers?
Check it out: http://yfrog.com/j6screenshot01tjl,
What is the nature of the content in the three columns? If the content is just data, and not calculations or the input to calculations, you can easily accomplish a single column sort in Numbers.
I see from your screen shot that you are still in the Excel mindset. You have a large table with more rows and columns empty than occupied. To work most effectively in Numbers we usually use only as many rows and columns as necessary, and if we have data that is of another set and not related, we begin a new table.
So, if your data meets the requirements of the first paragraph and you have trimmed away the excess rows and columns we can do the following: Click once on the label of the column you wish to independently sort. Then click again on this label and drag it up and away from the table to a blank area of the canvas. Perform the sort on the separated column. Then grab the sorted column in the same way as before and move it over the original table, watching the borders between columns highlight as you move over them. The double line between columns identifies the insertion point. When you have your sorted column in the right place, drop it back into the original table.
Jerry -
Need Help regarding JTable Sort?
Hello friends, i am working on the JTable and want to sort it by clicking on header of the column. I am using jdk1.5 and as my project is based on it so i cant change the jdk. I dont have the rowsorter class in jdk 1.5. So Is there any way through which i can sort the the Jtable by clicking its column header.
Thanks for any help.Here is a link to the 1.5 Swing tutorial:
https://www.cs.auckland.ac.nz/references/java/java1.5/tutorial/uiswing/TOC.html
The Table section has a sorting example. -
Hello Experts,
I have an UDF with a grid that I have to sort by one column.
I'm manually filling the grid not using an sql query with DataTable, so I can't use the "order by" clause for sorting.
Can anyone help me ?
Thanks for your time in advance.
Best regards
AndreaAndrea,
If i well understood I insert the new values in the grid already ordered using the row index parameter in method myGrid.DataTable.Rows.Add()
Yes, that's correct.
So why I'd need to catch the TitleObject double click event and re-order the grid's values ?
You only need to do this in order to emulate B1 Grid's sort functionality. With it, if a user double clicks a column, the grid will sort it self.
How can I find the right row index for the alphanumeric grid column ?
What do you mean by "the right row index"?
If you fill the grid, or more correctly, the Grid's DataTable row by row, just use myGrid.DataTable.Rows.Count -1 as the index.
Regards,
Vítor Vieira
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