Jtable cell width in JFileChooser
I wonder if there is a way to adjust the table cell width in JFileChooser ?
When I list the "My Computer" directory, I can see a list of drives in a JTable, such as "A:\", "C:\", "D:\", I've set it that way so that it displays the JTable view details as default. But the widths of the columns aren't the way I'd like to see, how can I adjust the cell widths of "Name", "Type","TotalSize" ...
Thanks
Frank
uhmm yes, but i want to set automatically at run time,Then you need to calculate it at run time. Search the forum. There are many postings on this topic that give a solution. Basically you loop through all the rows in the column and invoke the prepareRenderer(...) method of the table and save the largest width and then set the TableColumn width.
Similar Messages
-
is it possible to set the width of a cell in a jtable to view all the content?
uhmm yes, but i want to set automatically at run time,Then you need to calculate it at run time. Search the forum. There are many postings on this topic that give a solution. Basically you loop through all the rows in the column and invoke the prepareRenderer(...) method of the table and save the largest width and then set the TableColumn width.
-
Resizing the JTable Cell horizontal width
Sir/Madam,
How can i resize the JTable cell's horizontal width. I know the JTable's column width can be resized. I dont want to resize the entire JTable column. But i need to resize individual JTable cell's horizontal width. Thanks in advance.I think that's not possible. What kind of results are you expecting ? If the cells of a column are different widths, what are you going to do with the extra space of the narrower cells ?
What are you displaying in the cells ? Maybe you can narrow the contents of the cells, and not the cells. -
Is there any known efficient methods of creating the JTextField or JTable-cell Button as like in Forte's Component Inspector window where you click on the property value field and the value is displayed just left of a small button labelled "..." ie: [some text field with value][...] also referred to as the "ellipsis" buttons, or will most answers to this question simply describe the layout of a JField-JButton combination? The action from clicking on the [...] button aligned right of the JTextField simply invokes or displays a larger input interface in which upon completion of the entered data, returns the input to the related JTextField.
Thanks to anybody for any help with this, and perhaps in return, I may be able to answer any non-gui java questions, or some not so unfamilliar GUI questions.Hello StanislavL and Lutianxiong,
I remember asking this question some time ago, and the time has come again for me to seek this functionality. I have finally achieved the functionality and thought I would post the answer for anybody else. I had not realized that I had recieved a solution/reply to my original question as I come here to post the answer, and in fact, my solution does appear to be very similiar to your reply, StanislavL. As for you, Lutianxiong and other seekers of this info, here is my solution with a JFileChooser style input for the 3rd column which only shows gif,jpg and png files:
<code>
------------- TableCellFileInput.java -------------------
public class TableCellFileInput extends javax.swing.JPanel {
private String extensions[];
public TableCellFileInput(String fileExtensions[]) {
extensions = fileExtensions;
self = this;
initComponents();
private void initComponents() {
valueField = new javax.swing.JTextField();
fileButton = new javax.swing.JButton();
setLayout(new java.awt.BorderLayout());
valueField.setText("jTextField1");
add(valueField, java.awt.BorderLayout.CENTER);
fileButton.setText("...");
fileButton.setMargin(new java.awt.Insets(0, 2, 0, 2));
fileButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
fileButtonActionPerformed(evt);
add(fileButton, java.awt.BorderLayout.EAST);
private void fileButtonActionPerformed(java.awt.event.ActionEvent evt) {
String filePath = valueField.getText();
if(filePath != null && filePath.length() > 0) {
filePath = new java.io.File(filePath).getParent();
javax.swing.JFileChooser chooser
= new javax.swing.JFileChooser(filePath);
chooser.setFileFilter(new ImageFilter());
int returnVal = chooser.showOpenDialog(this);
if(returnVal == javax.swing.JFileChooser.APPROVE_OPTION) {
valueField.setText(chooser.getSelectedFile().getAbsolutePath());
class ImageFilter extends javax.swing.filechooser.FileFilter {
public boolean accept(java.io.File f) {
if(f.isDirectory()) return true;
String fName = f.getName();
if(extensions != null) {
for(int i=0;i<extensions.length;i++) {
if(fName.endsWith(extensions[ i ])) return true;
return false;
public String getDescription() {
return DESCRIPTION;
class CustomCellEditor extends javax.swing.AbstractCellEditor
implements javax.swing.table.TableCellEditor {
public Object getCellEditorValue() {
return valueField.getText();
public java.awt.Component getTableCellEditorComponent(javax.swing.JTable table, Object value, boolean isSelected, int row, int column) {
System.out.println("fileEditor");
if(value == null) valueField.setText("");
else valueField.setText(value.toString());
return self;
public void setColumn(javax.swing.table.TableColumn column) {
column.setCellEditor(new CustomCellEditor());
private javax.swing.JButton fileButton;
private javax.swing.JTextField valueField;
private static final String DESCRIPTION = "Image File Filter";
private java.awt.Component self;
------------- TestTable .java -------------------
public class TestTable extends javax.swing.JFrame {
public TestTable() {
editorField = new javax.swing.JTextField();
String fileExts[] = {"gif","jpg","png"};
fileEditorField = new TableCellFileInput(fileExts);
initComponents();
javax.swing.table.TableColumn column
= jTable1.getColumn("Title 3");
fileEditorField.setColumn(column);
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosing(java.awt.event.WindowEvent evt) {
exitForm(evt);
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, "cats"},
{null, null, null, "dogs"},
{null, null, null, "mice"},
{null, null, null, "birds"}
new String [] {
"Title 1", "Title 2", "Title 3", "Title 4"
Class[] types = new Class [] {
java.lang.Object.class, java.lang.Object.class, java.lang.Object.class, java.lang.String.class
public Class getColumnClass(int columnIndex) {
return types [columnIndex];
jScrollPane1.setViewportView(jTable1);
getContentPane().add(jScrollPane1, java.awt.BorderLayout.CENTER);
java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
setBounds((screenSize.width-400)/2, (screenSize.height-300)/2, 400, 300);
private void exitForm(java.awt.event.WindowEvent evt) {
System.exit(0);
public static void main(String args[]) {
new TestTable().show();
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
private javax.swing.JTextField editorField;
private TableCellFileInput fileEditorField;
</code> -
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);
} -
Hi
I am facing one problem. there is some data should be displayed in Jtable cell.
The thing is that the whole data shall be visible in the cell.. for this I am writing one renderer.. but I could not find the desire solution.. please check it out
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.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);
tableScrollPane.getRowHeader().setPreferredSize(new Dimension(800, 0));
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);
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:"));
item.put(new Long(1),new String("RED-1050"));
rowData.add(0,item);
item = new Hashtable();
item.put(new Long(0),new String("Description:"));
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.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 MultiLineCellRenderer extends JTextArea implements TableCellRenderer {
public MultiLineCellRenderer() {
setLineWrap(true);
setWrapStyleWord(true);
JScrollPane m_scroll = new JScrollPane(this,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
setOpaque(true);
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
/*if (isSelected) {
setForeground(table.getSelectionForeground());
setBackground(table.getSelectionBackground());
} else {
setForeground(table.getForeground());
setBackground(table.getBackground());
// setFont(table.getFont());
/* if (hasFocus) {
setBorder( UIManager.getBorder("Table.focusCellHighlightBorder") );
if (table.isCellEditable(row, column)) {
setForeground( UIManager.getColor("Table.focusCellForeground") );
setBackground( UIManager.getColor("Table.focusCellBackground") );
} else {
setBorder(new EmptyBorder(1, 2, 1, 2));
int width = table.getColumnModel().getColumn(column).getWidth();
//setSize(width, 1000);
int rowHeight = getPreferredSize().height;
if (table.getRowHeight(row) != rowHeight)
table.setRowHeight(row, rowHeight);
setText((value == null) ? "" : value.toString());
return this;
}what wrong with this code..
ThanksIn summary, you have one or more columns for which the data must be wholly visible - correct? If you need all the columns to show the whole of their data, you are goinf to have to expand the table, otherwise you can expand a column with something like
myTable.getColumnModel().getColumn(whichever).setPreferredWidth(whatever); -
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;
} -
JTable cell focus outline with row highlight
With a JTable, when I click on a row, the row is highlighted and the cell clicked has a subtle outline showing which cell was clicked.
I would like to do that programatically. I can highlight the row, but I have not been able to get the subtle outline on the cell. My purpose is to point the user to the row and cell where a search found a match. I do not have cell selection enabled, because I want the whole row highlighted.
My basic code is:
table.changeSelection(irow, icol, false, false);
table.scrollRectToVisible(table.getCellRect(irow, icol, true));I keep thinking I just need to find a way to "set focus" to the cell so the subtle outline is displayed, but I cannot find something like that.
Does anyone have some ideas on how to activate that automatic outline on the cell? I prefer not to write custom cell renderers for this if possible.That seems unnecessarily complicated, the outline is the focused cell highlight border so requesting focus on the table should be enough.
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import javax.swing.*;
public class TestTableFocus {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
final JTable table = new JTable(10, 10);
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(new JScrollPane(table));
frame.getContentPane().add(new JButton(
new AbstractAction("Focus cell") {
@Override
public void actionPerformed(ActionEvent e) {
table.changeSelection(5, 5, false, false);
centerCell(table, 5, 5);
table.requestFocusInWindow();
private void centerCell(JTable table, int x, int y) {
Rectangle visible = table.getVisibleRect();
Rectangle cell = table.getCellRect(x, y, true);
cell.grow((visible.width - cell.width) / 2,
(visible.height - cell.height) / 2);
table.scrollRectToVisible(cell);
}), BorderLayout.PAGE_END);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
} -
Jtable cell listening to mouse event source
Hi, I have a JTable with single cell selections enabled.
I can also get the mouseClicked event working, but the cure is worse than the illness, because every cell I click on will cause a jframe to pop-up.
Ideally only column 0 or 1 listens to the mouseClicked event.
Can someone please tell mehow to work that into the JTable cell (sorry for the tediously long code, its only a small part)
import javax.swing.JComponent;
...lots of import...
public class CCYTable extends JPanel
JTable newtable;
JLabel tableHeader;
public CCYFrame NewFrame;
private boolean DEBUG = false;
private int showInfoTimer = 10000; // info tip box will pop up for this period of time...
// if both column and row selection are enabled, then individual cell selection
// is also enabled.
private boolean ALLOW_COLUMN_SELECTION = true;
private boolean ALLOW_ROW_SELECTION = true;
private boolean clickForDetail = true; // click on cell to launch frame with detail
protected String[] colHeaderInfo =
{"Name of Instrument, move mouse to instrument for general detail of service.",
...lots of text...
// get values from database, use an "invisible column" for unique key
// description, conditions etc from Oracle...
String LoC = "Letter of Credit";
...more variable...
public void init()
//setSize(300,300);
tableHeader = new JLabel("uy or Sell", JLabel.CENTER);
setLayout(new BorderLayout());
newtable = new JTable(new TableDefinition())
//Put cell info here, from Oracle CellInfo varchar2
public String getToolTipText (MouseEvent mevt)
String info = null;
java.awt.Point p = mevt.getPoint();
int rowIndex = rowAtPoint(p);
int colIndex = columnAtPoint(p);
int realColIndex = convertColumnIndexToModel(colIndex);
Object currentValue = getValueAt(rowIndex, colIndex);
if (realColIndex == 0)
{ if (currentValue.equals(LoC))
{ info = "Click to read general description of our \"" + LoC + "\" service." ;
... ideally I would like to work the mouseClicked listener in here but...
return info;
} // end of JComponent's method getToolTipText
//Put table header info
protected JTableHeader createDefaultTableHeader()
return new JTableHeader(columnModel)
public String getToolTipText(MouseEvent mevt)
String tip = null;
java.awt.Point p = mevt.getPoint();
int index = columnModel.getColumnIndexAtX(p.x);
int realIndex = columnModel.getColumn(index).getModelIndex();
return colHeaderInfo[realIndex];
if (clickForDetail)
newtable.addMouseListener(new MouseAdapter()
public void mouseClicked(MouseEvent mevt)
{ // ...but JTable wants it like this...
// launch a new pop-up to replace the tool tip box
NewFrame = new CCYFrame("blabla");
ToolTipManager.sharedInstance().setDismissDelay(showInfoTimer);
newtable.setPreferredScrollableViewportSize(new Dimension(770, 350));
JScrollPane scrollpane = new JScrollPane(newtable);
initColumnSizes(newtable);
enableCellSelection(newtable);
add("North", tableHeader);
add("Center", scrollpane);
* For sizing columns. If all column heads are wider than the column-cells'
* contents, then just use column.sizeWidthToFit().
private void initColumnSizes(JTable newtable)
TableDefinition tblmodel = (TableDefinition)newtable.getModel();
TableColumn column = null;
Component comp = null;
int headerWidth=0, cellWidth=0;
Object[] longValues = tblmodel.longValues;
TableCellRenderer headerRenderer = newtable.getTableHeader().getDefaultRenderer();
TableCellRenderer rightRenderer = new RightRenderer();
for (int i = 0; i < 7; i++)
column = newtable.getColumnModel().getColumn(i);
comp = headerRenderer.getTableCellRendererComponent(
null, column.getHeaderValue(),
false, false, 0, 0);
headerWidth = comp.getPreferredSize().width;
comp = newtable.getDefaultRenderer(tblmodel.getColumnClass(i)).
getTableCellRendererComponent(
newtable, longValues,
true, true, 0, i);
cellWidth = comp.getPreferredSize().width;
column.setPreferredWidth(Math.max(headerWidth, cellWidth));
TableColumn col2 = newtable.getColumnModel().getColumn(2);
col2.setCellRenderer( rightRenderer );
TableColumn col2Width = newtable.getColumnModel().getColumn(2);
col2Width.setPreferredWidth(2);
TableColumn col6 = newtable.getColumnModel().getColumn(6);
col6.setCellRenderer( rightRenderer );
TableColumn col6Width = newtable.getColumnModel().getColumn(6);
col6Width.setPreferredWidth(2);
}// end of method initColumnSizes
private void enableCellSelection(JTable newtable)
if (ALLOW_COLUMN_SELECTION)
if (ALLOW_ROW_SELECTION) {newtable.setCellSelectionEnabled(true);}
newtable.setColumnSelectionAllowed(true);
ListSelectionModel colSM = newtable.getColumnModel().getSelectionModel();
colSM.addListSelectionListener(new ListSelectionListener()
public void valueChanged(ListSelectionEvent lsevt)
if (lsevt.getValueIsAdjusting()) return;
ListSelectionModel lsm = (ListSelectionModel)lsevt.getSource();
if (lsm.isSelectionEmpty()) {}
else
//int selectedCol = lsm.getMinSelectionIndex();
//NewFrame = new CCYFrame("more blabla!");
}//end of method enableCellSelection
...a lot of code follows...
TIA :-)Hi, thanks for the tip, but I get following compile-time error:
<identifier> expected
newtable.addMouseListener(new MouseAdapter()
.............................................^
package newtable does not exist
newtable.addMouseListener(new MouseAdapter()
...............^
2 errors
And here is how I've modified the code :
public class CCYTable extends JPanel
JTable newtable;
...lots of variables...
private boolean ALLOW_COLUMN_SELECTION = true;
private boolean ALLOW_ROW_SELECTION = true;
private boolean clickForDetail = true; // click on cell to launch frame with detail
protected String[] colHeaderInfo =
{"Name of Instrument, move mouse to instrument for general detail of service.",
...lots of text for tooltipbox...
// get values from database, use an "invisible column" for unique key
// description, conditions etc from Oracle...
...lots more String variables...
public void init()
//setSize(300,300);
tableHeader = new JLabel("Bids and Offers", JLabel.CENTER);
setLayout(new BorderLayout());
newtable = new JTable(new TableDefinition())
//Put cell info here, from Oracle CellInfo varchar2
public String getToolTipText (MouseEvent mevt)
String info = null;
java.awt.Point p = mevt.getPoint();
int rowIndex = rowAtPoint(p);
int colIndex = columnAtPoint(p);
int realColIndex = convertColumnIndexToModel(colIndex);
Object currentValue = getValueAt(rowIndex, colIndex);
if (realColIndex == 0)
{ if (currentValue.equals(LoC))
{ info = "Click to read general description of our \"" + LoC + "\" service." ;
return info;
} // end of JComponent's method getToolTipText
newtable.addMouseListener(new MouseAdapter() // HELP: compiler throws error here !!!!!!!!
public void mouseClicked(MouseEvent e)
java.awt.Point p = mevt.getPoint();
int rowIndex = rowAtPoint(p);
int colIndex = columnAtPoint(p);
int realColIndex = convertColumnIndexToModel(colIndex);
Object currentValue = getValueAt(rowIndex, colIndex);
if ((rowIndex == 0) and (colIndex == 0))
// do stuff for this particular JTable cell ...
//Put table header info
protected JTableHeader createDefaultTableHeader()
return new JTableHeader(columnModel)
public String getToolTipText(MouseEvent mevt)
String tip = null;
java.awt.Point p = mevt.getPoint();
int index = columnModel.getColumnIndexAtX(p.x);
int realIndex = columnModel.getColumn(index).getModelIndex();
return colHeaderInfo[realIndex];
ToolTipManager.sharedInstance().setDismissDelay(showInfoTimer);
newtable.setPreferredScrollableViewportSize(new Dimension(770, 350));
JScrollPane scrollpane = new JScrollPane(newtable);
initColumnSizes(newtable);
enableCellSelection(newtable);
add("North", tableHeader);
add("Center", scrollpane);
}On the other hand, this code works after a fashion but it is not what is needed because it listens to every JTable cell :
public class CCYTable extends JPanel
JTable newtable;
...unbelievably more variable definitions, etc...
public void init()
//setSize(300,300);
tableHeader = new JLabel("Bids and Offers", JLabel.CENTER);
setLayout(new BorderLayout());
newtable = new JTable(new TableDefinition())
//Put cell info here, from Oracle CellInfo varchar2
public String getToolTipText (MouseEvent mevt)
String info = null;
java.awt.Point p = mevt.getPoint();
int rowIndex = rowAtPoint(p);
int colIndex = columnAtPoint(p);
int realColIndex = convertColumnIndexToModel(colIndex);
Object currentValue = getValueAt(rowIndex, colIndex);
if (realColIndex == 0)
{ if (currentValue.equals(LoC))
{ info = "Click to read general description of our \"" + LoC + "\" service." ;
if (rowIndex == 0) // HELP: compiles okay but won't specifically select rowIndex == 0 and colIndex == 0
{this.addMouseListener(new clickListener(newtable, rowIndex, colIndex));
return info;
} // end of JComponent's method getToolTipText
... lots more code...
// ==============================
class clickListener extends MouseAdapter
private JTable newtable;
private int rowIndex;
private int colIndex;
public clickListener(JTable newtable, int rowIndex, int colIndex)
this.newtable = newtable;
this.rowIndex = rowIndex;
this.colIndex = colIndex;
public void mouseClicked(MouseEvent mevt)
NewFrame = new CCYFrame("blablabla");
}// end of method clickListenerIdeally I should be able to use a selection criteria like this :
java.awt.Point p = mevt.getPoint();
rowIndex = rowAtPoint(p);
colIndex=colAtPoint(p);
if ((rowIndex == 0) && (colIndex == 0)) {//do something}but this is going to be a bad Chrissy for me? -
Dynamic colored in theh JTable cell
Hi, All
I am using a JTable to display a Jlable in the JTable cells.
The lable is divided to, say 10 , sub rectangles. I would liketo fill each rectangles with different bg colors depending on the data I received. I tried to use html in the JLable to control the color, however, it is very expensive cuase it involves a lot of string process and also it is difficult to control the dimension of those rectangles. Do anyone has any better idea to do this ?
The cell is not necessary to be a JLable, by the way.
Thanks in advance !I have never used JPanel as my table cell component, but u might want to implement performance improvements similiar to ones done in DefaultTableCellRenderer which extends JLabel.
Here is the code extract from DefaultTableCellRenderer
* The following methods are overridden as a performance measure to
* to prune code-paths are often called in the case of renders
* but which we know are unnecessary. Great care should be taken
* when writing your own renderer to weigh the benefits and
* drawbacks of overriding methods like these.
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
public void validate() {}
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
public void revalidate() {}
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
public void repaint(long tm, int x, int y, int width, int height) {}
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
public void repaint(Rectangle r) { } -
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); -
How to write an element in a JTable Cell
Probably it's a stupid question but I have this problem:
I have a the necessity to build a JTable in which, when I edit a cell and I push a keyboard button, a new Frame opens to edit the content of the cell.
But the problem is how to write something in the JTable cell, before setting its model. Because, I know, setCellAT() method of JTree inserts the value in the model and not in the table view. And repainting doesn't function!
What to do??
ThanksHi there
Depending on your table model you should normally change the "cell value" of the tablemodel.
This could look like:
JTable table = new JTable();
TableModel model = table.getModel();
int rowIndex = 0, columnIndex = 0;
model.setValueAt("This is a test", rowIndex, columnIndex);
The tablemodel should then fire an event to the view (i.e. JTable) and the table should be updated.
Hope this helps you -
How to select rows in the inner JTable rendered in an outer JTable cell
I have wrriten the following code for creating cell specific renderer - JTable rendered in a cell of a JTable.
table=new JTable(data,columnNames)
public TableCellRenderer getCellRenderer(int row, int column)
if ((row == 0) && (column == 0))
return new ColorRenderer();
else if((row == 1) && (column == 0))
return new ColorRenderer1();
else
return super.getCellRenderer(row, column);
ColorRenderer and ColorRenderer1 are two inner classes, which implement TableCellRenderer to draw inner JTable on the outer JTable cell, having 2 rows and 1 column each.
Now what is happening the above code keeps executing continously, that is the classes are being initialised continously, inner JTables are rendered (drawn) continously, and this makes the application slow after some time. It throws java.lang.OutOfMemoryException.
WHY IS IT SO??? I can't understand where's the bug..
Any advice please???
Moreover i want selections in inner tables and not on outer table, how can this be possible.
I am working on this since a long time but have not yet found a way out...With your help i have overcome the problem of continous repeatition.
The major problem which I am facing is, in selecting rows in the inner rendered JTables.
I have added listener on outer JTable which select rows on the outer JTable, hence the complete inner JTable which being treated as a row, gets selected.
The thing is i need to select the rows of inner rendered JTables,not the outer JTable.
How to go about it??
I have even added listener to inner rendered JTables, but only first row of every table gets selected.
Please help....
Thanks in advance. -
How to display images in a Jtable cell-Urgent
Hay all,
Can anybody tell me that can we display images to JTable' cell,If yes the how do we do that(with some code snippet)? Its very urgent .Plz reply as soon as possible.Here is an example
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
class SimpleTableExample extends JFrame
private JPanel topPanel;
private JTable table;
private JScrollPane scrollPane;
public SimpleTableExample()
setTitle( "Table With Image" );
setSize( 300, 200 );
setBackground( Color.gray );
topPanel = new JPanel();
topPanel.setLayout( new BorderLayout() );
getContentPane().add( topPanel );
// Create columns names
String columnNames[] = { "Col1", "Col2", "Col3" };
// Create some data
Object data[][] =
{ (ImageIcon) new ImageIcon("User.Gif"), (String) "100", (String)"101" },
{ (String)"102", (String)"103", (String)"104" },
{ (String)"105", (String)"106", (String)"107" },
{ (String)"108", (String)"109", (String)"110" },
// Create a new table instance
DefaultTableModel model = new DefaultTableModel(data, columnNames);
JTable table = new JTable( model )
public Class getColumnClass(int column)
return getValueAt(0, column).getClass();
}; // Add the table to a scrolling pane
scrollPane = new JScrollPane( table );
topPanel.add( scrollPane, BorderLayout.CENTER );
public static void main( String args[] )
SimpleTableExample mainFrame = new SimpleTableExample();
mainFrame.setVisible( true );
} -
How can I put ImageIcon object in a JTable cell?
yes, I'mm trying :
ImageIcon icon = new ImageIcon("something.gif")
DefaultTableModel model = (DefaultTableModel)jTable1.getModel();
Object[] newRow = new Object[5];
newRow[1] = "I don't";
newRow[2] = "know, what";
newRow[3] = "I am doing"
newRow[4] = "wrong"
newRow[0] = icon;
model.addRow(newRow);
but icon doesn't show
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