Word wrap in jtable cell?
Can there be some sort of "word wrap" whithin the individual cells
of a jtable
If you use something like a JTextArea for a cell renderer then it will be able to wrap the text for you.
You can also use a JTextArea in a JScrollPane but will need to implement a corresponding editor to get it to respond to scroll gestures.
If you want to get the table to choose a sensible height for the row then it will get a bit trickier!
Let me know if you'd like to know more about how to go about doing some of this.
Hope this helps.
Similar Messages
-
How to automatically highlight / bold words in a JTable cell?
how do i do it?
i have an Object called Data (where toString() is the same as getDataName()).
and i want the JTable to either highlight or bold specific words (using the bold HTML tags) that are present in a SortedSet.
i do not want the dataName to be changed by directly manipulating the Object because the Data Objects were taken from the DB and i need the Objects and the records to be synchronised, and because the words in the SortedSet itself are subject to changes (add/edit/remove).
thanks.Edit: removed
db
Cross posted
http://www.java-forums.org/awt-swing/47138-how-automatically-highlight-bold-words-jtable-cell.html
Edited by: Darryl Burke -
Hi Guys
I neec to use word wrap in JTable cells but can't figure-out how to do it; can any of you help me?
Many thanks
PatrickMany thanks for your replies.
The JTextArea works fine but the table rows do not resize when the columns are resized so we end-up with the text being displayed on a single line and a lot of white-space below. How can I get the table rows to resize to the height og the tallest cell?
Many thanks for your help. -
Word wrap - add return within cell
I have the need of putting word(s) on definitive lines within a cell. The particular case I am working with at the moment is a cemetery listing that has additional information particularly multiple spouses. I want each spouse's name to appear on a different line within that cell which Xcel does by using either ctl/enter or option/enter rather than putting a number of spaces in a wrapped cell so the next name would shift to the next line. Does Numbers have something similar?
TksFound another neat feature that also works with word wrap. Use Inspector to Merge two or more cells, I happen to have a long text in the first cell of three cell I wanted to use. Follow that by adding Word Wrap while still in Inspector. Low and Behold, the text that far exceeded the one cell now uses three cell for display and if the data then exceeds that amount of space it wraps as if the three cell are a single cell. It just so happened that the data I mentioned above needed three lines. Also, if you want specific parts of the data to be on specific lines within the unified cell, both line break functions previously mentioned will force the next part of the data to go to the next line ad infintum(??) or until the combined cell space/character limit is reached.
-
Resizing ListCellRenderers using JTextArea and word wrap
Hi,
I'm trying to create a ListCellRenderer to draw nice cells for a JList. Each cell has a one line title and a description of variable length. So, I create a custom ListCellRenderer, which consists of a JPanel containing a JLabel for the title and a JTextArea for the description. I set the JTextArea to do wrapping on word boundried and it all almost works.
But, the list cells don't resize to accomodate the variable height of the cells. They show only 1 line for the title and 1 line for the description.
I have seen a few threads relating to this including the article, "Multi-line cells in JTable in JDK 1.4+" in the Java Specialists' Newsletter, which seems to do a similar trick for JTables. But so far nothing I've tried works.
Curiously, using println debugging, my getListCellRenderer method seems to get called for each cell twice while my GUI is being drawn. It looks to me like the TextUI view that draws the JTextArea seems to do the word wrapping after the first set of getListCellRenderer calls. But, it's the first set of calls that seems to establish the layout of the list.
Any help would be appreciated. I've pulled out quite enough hair over this one.
-chris
package bogus;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Font;
import java.util.ArrayList;
import java.util.List;
import javax.swing.*;
public class CellRendererTest {
public static void main(String[] args) {
final CellRendererTest test = new CellRendererTest();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
test.createGui();
public void createGui() {
JFrame frame = new JFrame("Testing Bogus ListCellRenderer");
JList list = new JList(createBogusListItems());
list.setCellRenderer(new MyListCellRenderer());
frame.add(list);
frame.setSize(200, 400);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
private MyListItem[] createBogusListItems() {
List<MyListItem> items = new ArrayList<MyListItem>();
items.add(new MyListItem("First item", "This is a nice short description."));
items.add(new MyListItem("Another one", "This is a longer description which might take up a couple of lines."));
items.add(new MyListItem("Next one", "This is a ridiculously long description which is total gibberish." +
"Blah blah blabber jabber goo. Blither blather bonk. Oink boggle gaggle ker-plunk."));
items.add(new MyListItem("No Desc", null));
items.add(new MyListItem("Last one", "Boink!"));
return items.toArray(new MyListItem[items.size()]);
static class MyListCellRenderer extends JPanel implements ListCellRenderer {
private JLabel title;
private JTextArea desc;
// hack to see if this is even possible
private static int[] rows = {1, 2, 3, 0, 1};
public MyListCellRenderer() {
setLayout(new BorderLayout());
setBorder(BorderFactory.createEmptyBorder(6, 4, 6, 4));
setOpaque(true);
title = new JLabel();
title.setFont(new Font("Arial", Font.ITALIC | Font.BOLD, 11));
add(title, BorderLayout.NORTH);
desc = new JTextArea();
desc.setFont(new Font("Arial", Font.PLAIN, 9));
desc.setOpaque(false);
desc.setWrapStyleWord(true);
desc.setLineWrap(true);
add(desc, BorderLayout.CENTER);
public Component getListCellRendererComponent(JList list, Object value,
int index, boolean isSelected, boolean cellHasFocus) {
MyListItem item = (MyListItem)value;
title.setText(item.title);
if (item.description != null && item.description.length() > 0) {
desc.setText(item.description);
desc.setVisible(true);
else {
desc.setVisible(false);
// uncomment next line to to somewhat simulate the effect I want (hacked using the rows array)
// desc.setRows(rows[index]);
if (isSelected) {
setBackground(list.getSelectionBackground());
setForeground(list.getSelectionForeground());
else {
setBackground(list.getBackground());
setForeground(list.getForeground());
return this;
static class MyListItem {
String title;
String description;
public MyListItem(String title, String description) {
this.title = title;
this.description = description;
}This seems to work
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Insets;
import java.util.ArrayList;
import java.util.List;
import javax.swing.*;
import javax.swing.text.View;
public class CellRendererTest {
int WIDTH = 220;
public static void main(String[] args) {
final CellRendererTest test = new CellRendererTest();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
test.createGui();
public void createGui() {
JFrame frame = new JFrame("Testing Bogus ListCellRenderer");
JList list = new JList(createBogusListItems());
final MyListCellRenderer renderer = new MyListCellRenderer();
list.setCellRenderer( renderer );
JScrollPane listScrollPane = new JScrollPane(list);
frame.add(listScrollPane);
frame.setSize(WIDTH, 400);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
private MyListItem[] createBogusListItems() {
List<MyListItem> items = new ArrayList<MyListItem>();
items.add(new MyListItem("First item", "This is a nice short description."));
items.add(new MyListItem("Another one", "This is a longer description which might take up a couple of lines."));
items.add(new MyListItem("Next one", "This is a ridiculously long description which is total gibberish." +
"Blah blah blabber jabber goo. Blither blather bonk. Oink boggle gaggle ker-plunk."));
items.add(new MyListItem("No Desc", null));
items.add(new MyListItem("Last one", "Boink!"));
items.add(new MyListItem("Ooops this one breaks things by being longer than my fixed width", "Blabber babble gibber flipper flop."));
return items.toArray(new MyListItem[items.size()]);
static class MyListCellRenderer extends JPanel implements ListCellRenderer {
public JLabel title;
public JTextArea desc;
Color altColor = new Color(0xeeeeee);
public MyListCellRenderer() {
setLayout(new BorderLayout());
setBorder(BorderFactory.createEmptyBorder(6, 4, 6, 4));
setOpaque(true);
title = new JLabel();
title.setFont(new Font("Arial", Font.ITALIC | Font.BOLD, 11));
add(title, BorderLayout.NORTH);
desc = new JTextArea();
desc.setFont(new Font("Arial", Font.PLAIN, 9));
desc.setOpaque(false);
desc.setWrapStyleWord(true);
desc.setLineWrap(true);
add(desc, BorderLayout.CENTER);
public Component getListCellRendererComponent(JList list, Object value,
int index, boolean isSelected, boolean cellHasFocus) {
Insets insets = desc.getInsets();
int rendererLeftRightInsets = insets.left + insets.right + 8; // 8 from panel border
int topDownInsets = insets.top + insets.bottom;
int listWidth = list.getWidth();
int viewWidth = listWidth;
int scrollPaneLeftRightInsets = 0;
JScrollPane scroll = (JScrollPane) SwingUtilities.getAncestorOfClass( JScrollPane.class, list );
if ( scroll != null && scroll.getViewport().getView() == list ) {
Insets scrollPaneInsets = scroll.getBorder().getBorderInsets(scroll);
scrollPaneLeftRightInsets = scrollPaneInsets.left + scrollPaneInsets.right;
listWidth = scroll.getWidth() - scrollPaneLeftRightInsets;
JScrollBar verticalScrollBar = scroll.getVerticalScrollBar();
if (verticalScrollBar.isShowing()) {
listWidth -= verticalScrollBar.getWidth();
viewWidth = listWidth - rendererLeftRightInsets;
MyListItem item = (MyListItem)value;
title.setText(item.title);
if (item.description != null && item.description.length() > 0) {
desc.setText(item.description);
desc.setVisible(true);
View rootView = desc.getUI().getRootView(desc);
rootView.setSize( viewWidth, Float.MAX_VALUE );
float yAxisSpan = rootView.getPreferredSpan(View.Y_AXIS);
Dimension preferredSize = new Dimension( viewWidth, (int)yAxisSpan + topDownInsets );
desc.setPreferredSize( preferredSize );
} else {
desc.setVisible(false);
title.setPreferredSize( new Dimension( viewWidth, title.getPreferredSize().height ) );
// uncomment next line to to somewhat simulate the effect I want (hacked using the rows array)
//desc.setRows(rows[index]);
if (isSelected) {
setBackground(list.getSelectionBackground());
setForeground(list.getSelectionForeground());
else {
if (index % 2 == 0)
setBackground(altColor);
else
setBackground(list.getBackground());
setForeground(list.getForeground());
return this;
static class MyListItem {
String title;
String description;
public MyListItem(String title, String description) {
this.title = title;
this.description = description;
} -
DataGrid, HTML Text, and WORD WRAPPING
I have a datagrid, with 2 columns:
- comment
- date
The dataprovider that feeds the datagrid is an array
collection, with each object containing the following fields:
- comment
- date
- viewed
What I want to do is BOLD the comment cell if the comment has
not yet been viewed. What I first tried doing was to just insert
the <b></b> tags on the server and then feed them up to
Flex. So here's the code that I had tried to do this with:
<mx:DataGridColumn>
<mx:itemRenderer>
<mx:Component>
<mx:HBox>
<mx:Label htmlText="{data.comment}" />
</mx:HBox>
</mx:Component>
</mx:itemRenderer>
</mx:DataGridColumn>
This works, but I lose the word wrapping for long comments (I
have wordwrap="true" defined on my DataGrid).
Then I tried changing my approach and doing something a
little more simple to try and preserve the word wrapping, like
this:
<mx:DataGridColumn dataField="comment" width="100"
wordWrap="true" fontWeight="{(data.viewed==0 ? 'bold' : 'normal')}"
/>
Yet that doesn't seem to work either, it appears to just
completely ignore everything... no bolding whatsoever.
So my question is: what's the best to to control the BOLDING
of a DataGrid cell while at the same time retaining the word wrap
features?
Thanks,
Jacob<mx:DataGridColumn>
<mx:itemRenderer>
<mx:Component>
<mx:HBox>
<mx:Label htmlText="{data.comment}"
wordWrap="true" height="100%"/>
</mx:HBox>
</mx:Component>
</mx:itemRenderer>
</mx:DataGridColumn>
You might also have a little more luck working with a
TextArea -
hi all,
how do you word wrap a field value in a cell of a table in smarforms?
thanks,
sidHi,
Word wrap is automatically enabled based on the size and the position of the window. You can adjust the window position on the form painter to enable the word wrap. There is as such no specific settings to be done.
Cheers
VJ -
Problem in JTable cell renderer
Hi
One problem in JTable cell. Actually I am using two tables while I am writing renderer for word raping in first table .. but it is affected in last column only remain is not being effected�. Please chaek it out what is exact I am missing�
Thanks
package com.apsiva.tryrowmerge;
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
import java.util.EventObject;
import java.util.Hashtable;
import java.net.*;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.event.*;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
class Item_Details extends JFrame {
ApsJTable itemTable = null;
ApsJTable imageTable = null;
ArrayList data = new ArrayList();
String[] columns = new String[2];
ArrayList data1 = new ArrayList();
String[] columns1 = new String[2];
ItemTableModel itemTableModel = null;
ItemTableModel itemTableModel1 = null;
public Item_Details()
super("Item Details");
this.setSize(600,100);
this.setBackground(Color.WHITE);
this.setVisible(true);
init();
private void init(){
////////////// Get data for first Table Model ////////////////////////////
data = getRowData();
columns = getColData();
System.out.println(columns[0]);
itemTableModel = new ItemTableModel(data,columns);
/////////////Get Data for Second Table Model //////////////////////////////
try{
data1 = getRowData1();
}catch(Exception e){}
columns1 = getColumns1();
itemTableModel1 = new ItemTableModel(data1,columns1);
///////////// Set Data In Both Table Model //////////////////////////////////
itemTable = new ApsJTable(itemTableModel);
imageTable = new ApsJTable(itemTableModel1);
this.itemTable.setShowGrid(false);
this.imageTable.setShowGrid(false);
this.itemTable.setColumnSelectionAllowed(false);
this.imageTable.setColumnSelectionAllowed(false);
System.out.println(itemTable.getColumnCount());
this.imageTable.setRowHeight(getImageHeight()+3);
JScrollPane tableScrollPane = new JScrollPane(this.imageTable,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
tableScrollPane.setRowHeaderView(this.itemTable);
//itemTable.getColumnModel().getColumn(0).setMaxWidth(200);
itemTable.getColumnModel().getColumn(0).setPreferredWidth(200);
itemTable.getColumnModel().getColumn(1).setPreferredWidth(600);
tableScrollPane.getRowHeader().setPreferredSize(new Dimension(800, 0));
itemTable.getTableHeader().setResizingAllowed(false);
itemTable.getTableHeader().setReorderingAllowed(false);
itemTable.setColumnSelectionAllowed(false);
//itemTable.setRowHeight(25);
itemTable.setCellSelectionEnabled(false);
itemTable.setFocusable(false);
imageTable.getTableHeader().setReorderingAllowed(false);
imageTable.setFocusable(false);
imageTable.setCellSelectionEnabled(false);
//tableScrollPane.setOpaque(false);
itemTable.setAutoCreateColumnsFromModel(false);
int columnCount = itemTable.getColumnCount();
for(int k=0;k<columnCount;k++)
TableCellRenderer renderer = null;
TableCellEditor editor = null;
renderer = new TextAreaCellRenderer(); // NEW
// editor = new TextAreaCellEditor();
// TableColumn column = new TableColumn(k,itemTable.getColumnModel().getColumn(k).getWidth(),renderer, editor);
System.out.println(k);
itemTable.getColumnModel().getColumn(k).setCellRenderer(renderer);
//itemTable.getColumnModel().getColumn(k).setCellEditor(editor);
/*itemTable.getColumnModel().getColumn(1).setCellRenderer(new TextAreaCellRenderer());
itemTable.getColumnModel().getColumn(1).setCellEditor(new TextAreaCellEditor());*/
// itemTable.setShowGrid(false);
//itemTable.addColumn(column);
//itemTable.getColumnModel().getColumn(k).setCellRenderer(new MultiLineCellRenderer());
//itemTable.getColumnModel().getColumn(k).setCellEditor(new TextAreaCellEditor());
////////////---------------------- Here background color is being set--------------//////////////////
this.imageTable.getParent().setBackground(Color.WHITE);
this.itemTable.getParent().setBackground(Color.WHITE);
tableScrollPane.setCorner(ScrollPaneConstants.UPPER_LEFT_CORNER,this.itemTable.getTableHeader());
getContentPane().add(tableScrollPane,BorderLayout.CENTER);
getContentPane().setVisible(true);
public static void main(String[] str){
com.incors.plaf.alloy.AlloyLookAndFeel.setProperty("alloy.licenseCode", "2005/05/28#[email protected]#1v2pej6#1986ew");
try {
javax.swing.LookAndFeel alloyLnF = new com.incors.plaf.alloy.AlloyLookAndFeel();
javax.swing.UIManager.setLookAndFeel(alloyLnF);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
Item_Details ID = new Item_Details();
ID.setVisible(true);
public ArrayList getRowData()
ArrayList rowData=new ArrayList();
Hashtable item = new Hashtable();
item.put(new Long(0),new String("Item No:aaaaaaa aaaaaaaa aaaaaaaaa aaaaaa"));
item.put(new Long(1),new String("RED-1050"));
rowData.add(0,item);
item = new Hashtable();
item.put(new Long(0),new String("Description:rt r trtrt rttrytrr tytry trytry tr tr rty thyjyhjhnhnhgg hhjhgjh"));
item.put(new Long(1),new String("SYSTEM 18 mbh COOLING 13 mbh HEATING 230/208 v POWER AIRE "));
rowData.add(1,item);
item = new Hashtable();
item.put(new Long(0),new String("Stage:"));
item.put(new Long(1),new String("Draft"));
rowData.add(2,item);
item = new Hashtable();
item.put(new Long(0),new String("Price: "));
item.put(new Long(1),new String("999.00"));
rowData.add(3,item);
item = new Hashtable();
item.put(new Long(0),new String("Features:"));
item.put(new Long(1),new String("SYSTEM COOLING & HEATING 12 mbh 230/208 v POWER AIRE SYSTEM1234 COOLING & HEATING 12 mbh 230/208 v POWER AIRE "));
rowData.add(4,item);
item = new Hashtable();
item.put(new Long(0),new String("Features:"));
item.put(new Long(1),new String("SYSTEM COOLING & HEATING 12 mbh 230/208 v POWER AIRE SYSTEM1234 COOLING & HEATING 12 mbh 230/208 v POWER AIRE "));
rowData.add(5,item);
item = new Hashtable();
item.put(new Long(0),new String("Features:"));
item.put(new Long(1),new String("SYSTEM COOLING & HEATING 12 mbh 230/208 v POWER AIRE SYSTEM1234 COOLING & HEATING 12 mbh 230/208 v POWER AIRE "));
rowData.add(6,item);
/*item.put(new Long(0),new String("Family Sequence"));
item.put(new Long(1),new String("8.00"));
rowData.add(5,item);
item.put(new Long(0),new String("Family Sequence"));
item.put(new Long(1),new String("8.00"));
rowData.add(6,item);
item.put(new Long(0),new String("Family Sequence"));
item.put(new Long(1),new String("8.00"));
rowData.add(7,item);
return rowData;
public String[] getColData()
String[] colData = new String[]{"Attribute","Value"};
return colData;
public ArrayList getRowData1()throws MalformedURLException{
ArrayList rowData = new ArrayList();
Hashtable item = new Hashtable();
String str = new String("http://biis:8080/assets/PRIMPRIM/Adj_BeacM_Small.jpg");
URL url = new URL(str);
ImageIcon ic = new ImageIcon(url);
ImageIcon scaledImage = new ImageIcon(ic.getImage().getScaledInstance(getImageHeight(), -1,Image.SCALE_SMOOTH));
item.put(new Long(0), scaledImage);
rowData.add(0,item);
String str1 = new String("http://biis:8080/assets/PRIMPRIM/Adj_BeacM_Small.jpg");
URL url1 = new URL(str1);
ImageIcon ic1 = new ImageIcon(url1);
ImageIcon scaledImage1 = new ImageIcon(ic1.getImage().getScaledInstance(120, -1,Image.SCALE_DEFAULT));
item.put(new Long(0),scaledImage1);
rowData.add(1,item);
return rowData;
public String[] getColumns1(){
String[] colData = new String[]{"Image"};
return colData;
public int getImageHeight(){
ImageIcon ic = new ImageIcon("c:\\image\\ImageNotFound.gif");
return ic.getIconHeight();
class TextAreaCellRenderer extends JTextArea implements TableCellRenderer
public TextAreaCellRenderer() {
setEditable(false);
setLineWrap(true);
setWrapStyleWord(true);
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus,
int nRow, int nCol)
if (value instanceof String)
setText((String)value);
// Adjust row's height
int width = table.getColumnModel().getColumn(nCol).getWidth();
setSize(width, 1000);
int rowHeight = getPreferredSize().height;
if (table.getRowHeight(nRow) != rowHeight)
table.setRowHeight(nRow, rowHeight);
this.setBackground(Color.WHITE);
return this;I think Problem is between these code only
for(int k=0;k<columnCount;k++)
TableCellRenderer renderer = null;
TableCellEditor editor = null;
renderer = new TextAreaCellRenderer();
itemTable.getColumnModel().getColumn(k).setCellRenderer(renderer);or in this renderer
class TextAreaCellRenderer extends JTextArea implements TableCellRenderer
public TextAreaCellRenderer() {
setEditable(false);
setLineWrap(true);
setWrapStyleWord(true);
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus,
int nRow, int nCol)
if (value instanceof String)
setText((String)value);
// Adjust row's height
int width = table.getColumnModel().getColumn(nCol).getWidth();
setSize(width, 1000);
int rowHeight = getPreferredSize().height;
if (table.getRowHeight(nRow) != rowHeight)
table.setRowHeight(nRow, rowHeight);
this.setBackground(Color.WHITE);
return this;
} -
Oops alv no_zero and 'word wrap' in fieldcatalog
Hi All,
I have 2 queations
1) Can I have word wrap option in alv, ie any option to display the same cell information in multiple lines and
2) I am trying to use no_zero of fieldcatalog as shown in below code
wa_billets_fcat-fieldname = 'ACTUAL_QTY'.
wa_billets_fcat-inttype = 'C'.
wa_billets_fcat-outputlen = '13'.
wa_billets_fcat-coltext = 'Actual Qty'.
wa_billets_fcat-seltext = 'Actual Qty'.
wa_billets_fcat-edit = 'X'.
wa_billets-no_zero = 'X'.
APPEND wa_billets_fcat TO billet_fcat.
CLEAR wa_billets_fcat.
but it is giving the error as bellow
Field "WA_BILLETS-NO_ZERO" is unknow. it is neither is one of the specified tables nor defined by a 'DATA" statement.
Please help me
Thanks in advance.hi check this....
wa_billets_fcat-fieldname = 'ACTUAL_QTY'.
wa_billets_fcat-reptext_ddic = 'Actual quantity'.
wa_billets_fcat-no_zero = 'X'.
APPEND wa_billets_fcat TO billet_fcat.
CLEAR wa_billets_fcat.
hope this will help for the word wrap..
http://www.sap-img.com/fu037.htm
regards,
venkat
Edited by: venkat appikonda on May 10, 2008 4:46 PM -
How to blink the text with in JTable Cell?
Hi Friends,
I am relatively new to Java Swings. I have got a requirement to blink the text with in the JTable cell conditionally. Please help with suggestions or sample codes if any.
Thanks in Advance.
Satya.I believe Swing components support HTML tags.
So you might be able to wrap your text in <BLINK>I am blinking !</BLINK>
tags.
If that doesn't work, you probably have to create your own cell renderer, and force a component repaint every second or so... messy.
regards,
Owen -
Can not show the JCheckBox in JTable cell
I want to place a JCheckBox in one JTable cell, i do as below:
i want the column "d" be a check box which indicates "true" or "false".
String[] columnNames = {"a","b","c","d"};
Object[][] rowData = {{"", "", "", Boolean.FALSE}};
tableModel = new DefaultTableModel(rowData, columnNames);
dataTable = new JTable(tableModel);
dataTable.getColumnModel().getColumn(3).setCellEditor(new DefaultCellEditor(new JCheckBox()));
But when i run it, the "d" column show the string "false" or "true", not the check box i wanted.
I do not understand it, can you help me?
Thank you very much!
coral9527Do not use DefaultTableModel, create your own table model and you should implement the method
getColumnClass to display the boolean as checkbox ...
I hope the following colde snippet helps you :
class MyModel extends AbstractTableModel {
private String[] columnNames = {"c1",
"c2"};
public Object[][] data ={{Boolean.valueOf(true),"c1d1"}};
public int getColumnCount() {
//System.out.println("Calling getColumnCount");
return columnNames.length;
public int getRowCount() {
//System.out.println("Calling row count");
return data.length;
public String getColumnName(int col) {
return columnNames[col];
public Object getValueAt(int row, int col) {
return data[row][col];
* JTable uses this method to determine the default renderer/
* editor for each cell. If we didn't implement this method,
* then the last column would contain text ("true"/"false"),
* rather than a check box.
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
* Don't need to implement this method unless your table's
* editable.
public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
return true;
* Don't need to implement this method unless your table's
* data can change.
public void setValueAt(Object value, int row, int col) {
data[row][col] = value;
fireTableCellUpdated(row, col); -
Shading part of a JTable Cell dependent upon the value of the cell
Hi
Was hoping some one woudl be able to provide some help with this. I'm trying to create a renderer that will "shade" part of a JTable cell's background depending upon the value in the cell as a percentage (E.g. if the cell contains 0.25 then a quarter of the cell background will be shaded)
What I've got so far is a renderer which will draw a rectangle whose width is the relevant percentage of the cell's width. (i.e. the width of the column) based on something similar I found in the forum but the part I'm struggling with is getting it to draw this rectangle in any cell other than the first cell. I've tried using .getCellRect(...) to get the x and y position of the cell to draw the rectangle but I still can't make it work.
The code for my renderer as it stands is:
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.table.TableCellRenderer;
public class PercentageRepresentationRenderer extends JLabel implements TableCellRenderer{
double percentageValue;
double rectWidth;
double rectHeight;
JTable table;
int row;
int column;
int x;
int y;
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
if (value instanceof Number)
this.table = table;
this.row = row;
this.column = column;
Number numValue = (Number)value;
percentageValue = numValue.doubleValue();
rectHeight = table.getRowHeight(row);
rectWidth = percentageValue * table.getColumnModel().getColumn(column).getWidth();
return this;
public void paintComponent(Graphics g) {
x = table.getCellRect(row, column, false).x;
y = table.getCellRect(row, column, false).y;
setOpaque(false);
Graphics2D g2d = (Graphics2D)g;
g2d.fillRect(x,y, new Double(rectWidth).intValue(), new Double(rectHeight).intValue());
super.paintComponent(g);
}and the following code produces a runnable example:
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
public class PercentageTestTable extends JFrame {
public PercentageTestTable()
Object[] columnNames = new Object[]{"A","B"};
Object[][] tableData = new Object[][]{{0.25,0.5},{0.75,1.0}};
DefaultTableModel testModel = new DefaultTableModel(tableData,columnNames);
JTable test = new JTable(testModel);
test.setDefaultRenderer(Object.class, new PercentageRepresentationRenderer());
JScrollPane scroll = new JScrollPane();
scroll.getViewport().add(test);
add(scroll);
public static void main(String[] args)
PercentageTestTable testTable = new PercentageTestTable();
testTable.pack();
testTable.setVisible(true);
testTable.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}If anyone could help or point me in the right direction, I'd appreciate it.
RuanaeThis is an example I published some while ago -
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class Fred120 extends JPanel
static final Object[][] tableData =
{1, new Double(10.0)},
{2, new Double(20.0)},
{3, new Double(50.0)},
{4, new Double(10.0)},
{5, new Double(95.0)},
{6, new Double(60.0)},
static final Object[] headers =
"One",
"Two",
public Fred120() throws Exception
super(new BorderLayout());
final DefaultTableModel model = new DefaultTableModel(tableData, headers);
final JTable table = new JTable(model);
table.getColumnModel().getColumn(1).setCellRenderer( new LocalCellRenderer(120.0));
add(table);
add(table.getTableHeader(), BorderLayout.NORTH);
public class LocalCellRenderer extends DefaultTableCellRenderer
private double v = 0.0;
private double maxV;
private final JPanel renderer = new JPanel(new GridLayout(1,0))
public void paintComponent(Graphics g)
super.paintComponent(g);
g.setColor(Color.CYAN);
int w = (int)(getWidth() * v / maxV + 0.5);
int h = getHeight();
g.fillRect(0, 0, w, h);
g.drawRect(0, 0, w, h);
private LocalCellRenderer(double maxV)
this.maxV = maxV;
renderer.add(this);
renderer.setOpaque(true);
renderer.setBackground(Color.YELLOW);
renderer.setBorder(null);
setOpaque(false);
setHorizontalAlignment(JLabel.CENTER);
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col)
final JLabel label = (JLabel) super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, col);
if (value instanceof Double)
v = ((Double)value).doubleValue();
return renderer;
public static void main(String[] args) throws Exception
final JFrame frame = new JFrame("Fred120");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setContentPane(new Fred120());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
} -
Webforms - Wrap Text/Word Wrap for Column Headings
I have some member aliases that are set as my webform's column headings, but they are fairly long. Setting the column width to a custom value that fits most of the text in the heading makes the form very wide and ugly to work with. I don't see any option to Wrap Text or use Word Wrap in the column headings. Is there any way to do this?
Thanks!Hi,
I am not aware of any option which allows you to wrap the text, it may be possible customizing the [CSS |http://download.oracle.com/docs/cd/E10530_01/doc/epm.931/html_hp_admin/ch12s03.html] though to be honest I am not even sure about that and even if it was possible it would apply to all apps.
Cheers
John
http://john-goodwin.blogspot.com/ -
How to word wrap within text field
I've created a form with a text field but when filling the form out, the words don't word wrap, but merely go in a single line across the text box field.
When can I format the text box to word wrap?
tksI have set my text fields to multi line and the text wraps but it only starts about halfway down the text box. Please help, this is getting frustrating...
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How can I turn off word wrap in the View Source output?
I'm trying to extract HTML from Word and one way to do that is to save the Word file as a .htm file and then View Source in a browser and copy that. But the words are wrapped in the View Source file. I want each paragraph to be all on one line. Is there a setting for the View Source feature that will turn off word wrap?
Once I have that done and copied into a plain text editor, I will use Search>Replace to get rid of all the stuff Word puts there and just end up with the simple paragraph tags at the end of each paragraph, all on one line.You can disable wrapping and syntax highlighting in the View menu in the Edit > View Source window.
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