Multiline JLabel in Japanese?
Hi.
On Windows NT 4.0, I am trying to get a JLabel to display multiple lines in Japanese.
With English or other Latin-based languages, this can be done easily enough using HTML tags. However, when I try to mix HTML tags with Japanese, the Japanese will not be rendered. Rather, it will display the infamous square box.
Below is sample code which renders the two cases (uncomment the appropriate case).
Any ideas?
import javax.swing.*;
import java.awt.*;
public class test {
public static void main(String[] args) {
JFrame frame = new JFrame("HelloWorldSwing");
final JLabel label = new JLabel();
Font f = new Font("MS Mincho", Font.PLAIN, 24);
label.setFont(f);
// This doesn't render the Japanese, but it renders Cyrillic
label.setText("<html><body>\u0414<br>\u3059</body></html>");
// This renders both Japanese and Cyrillic properly
//label.setText("\u0414\u3059");
frame.getContentPane().add(label);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
One thing I forgot to mention...
I tried setting the following as well:
label.setText("<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF8\"></head><body>\u0414<br>\u3059</body></html>");
For "charset", I tried various different settings (shift_jis, utf8, utf-8, utf-16). However, I may have gotten this wrong so I am mentioning this, in case it helps anyone to find the correct answer more easily.
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import java.awt.event.*;
import java.sql.Connection;
import java.sql.Statement;
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System.exit(0);
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import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.util.Enumeration;
import java.util.StringTokenizer;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.border.Border;
import javax.swing.border.LineBorder;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.*;
public class DynamicTree extends JPanel {
protected DefaultMutableTreeNode rootNode;
protected DefaultTreeModel treeModel;
protected JTree tree;
protected DefaultTreeCellRenderer linksRenderer;
public static final String NEWLINE = System.getProperty("line.separator");
public DynamicTree(String appName) {
rootNode = new DefaultMutableTreeNode(appName);
treeModel = new DefaultTreeModel(rootNode);
tree = new JTree(treeModel);
tree.setEditable(false);
tree.setShowsRootHandles(true);
tree.setBackground(Color.white);
tree.setCellRenderer(new DefaultTreeCellRenderer()
public Component getTreeCellRendererComponent(JTree pTree,
Object pValue, boolean pIsSelected, boolean pIsExpanded,
boolean pIsLeaf, int pRow, boolean pHasFocus)
DefaultMutableTreeNode node = (DefaultMutableTreeNode)pValue;
JLabel lbl = (JLabel)super.getTreeCellRendererComponent(pTree, pValue, pIsSelected,pIsExpanded, pIsLeaf, pRow, pHasFocus);
lbl.setBorder(new LineBorder(Color.RED,1));
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pIsExpanded, pIsLeaf, pRow, pHasFocus);
if (node.isRoot())
c.setForeground(Color.red);
else if (node.getChildCount() > 0)
c.setForeground(Color.blue);
else if (pIsLeaf)
c.setForeground(Color.black);//new Color(0x736AFF));*/
setBackgroundNonSelectionColor(Color.white);
JPanel p = new JPanel();
p.setBackground(tree.getBackground());
Dimension d = lbl.getPreferredSize();
p.setPreferredSize(new Dimension(d.width, d.height));
p.add(lbl);
tree.setRowHeight(30);
return (p);
JScrollPane scrollPane = new JScrollPane(tree);
setLayout(new GridLayout(1,0));
add(scrollPane);
public void addObject(DefaultMutableTreeNode parent,Object child,String desc)
child=child+desc;
//System.out.println("child"+child);
DefaultMutableTreeNode parent1;
DefaultMutableTreeNode childNode =
new DefaultMutableTreeNode(child);
if (parent == null)
parent = rootNode;
else
String parentName = (String)parent.getUserObject();
String tok;
Enumeration e=null;
e=(Enumeration) rootNode.breadthFirstEnumeration();
int breakloop=0;
parent = rootNode.getLastLeaf();
while (e.hasMoreElements() ) {
if(parent!= null)
//System.out.println("parent.toString():"+parent.toString());
tok=parent.toString();
StringTokenizer st = new StringTokenizer(tok);
parent1=newObj(st.nextToken());
if(parent1.getUserObject().equals(parentName))
breakloop=1;
break;
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if(breakloop==0)
parent = rootNode.getLastLeaf();
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System.out.println("childNode"+childNode.toString());
parent.add(childNode);
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DefaultMutableTreeNode pname= new DefaultMutableTreeNode(parent);
return pname;
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public void treeNodesChanged(TreeModelEvent e) {
DefaultMutableTreeNode node;
node = (DefaultMutableTreeNode)
(e.getTreePath().getLastPathComponent());
try {
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node = (DefaultMutableTreeNode)
(node.getChildAt(index));
} catch (NullPointerException exc) {}
public void treeNodesInserted(TreeModelEvent e) {
public void treeNodesRemoved(TreeModelEvent e) {
public void treeStructureChanged(TreeModelEvent e) {
}Here is a simple example.
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import javax.swing.*;
import javax.swing.tree.DefaultMutableTreeNode;
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private JTree tree;
public static void main( String[] args ) throws Exception {
SwingUtilities.invokeLater( new Runnable() {
public void run() { new MultiLineTreeDemo(); }
public MultiLineTreeDemo() {
super( "MultiLineTreeDemo" );
setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
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DefaultMutableTreeNode node = new DefaultMutableTreeNode( "<html>This is<p>a child node.<html>" );
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tree = new JTree( root );
setLayout( new BorderLayout() );
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setSize( 200, 200 );
setVisible( true );
} -
Groupable + multiline table header paint problem
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int[] counter = new int[getTable().getColumnCount()];
for(int i = 0; i < getTable().getColumnCount(); i++) {
int level = 0;
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System.exit(0);
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public void paint(Graphics g, JComponent c) {
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Component[] cmp = new Component[header.getColumnModel().getColumnCount()];
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Component[] cmpGroup = new Component[cg.size()];
TableColumnModel tcm = header.getTable().getColumnModel();
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cmpGroup[i] = renderer.getTableCellRendererComponent(header.getTable(), ((ColumnGroup)cg.elementAt(i)).getText(), false, false, -1, i);
rendererPane.add(cmpGroup[i]);
int x = 0;
int y = 0;
int height = 20 * ((GroupableTableHeader)header).getNewLineCount(((ColumnGroup)cg.elementAt(i)).getText());
for(int j = 0; j < ((ColumnGroup)cg.elementAt(i)).getStartIndex(); j++)
x += tcm.getColumn(j).getWidth();
for(int j = 0; j < cmpGroup.length; j++) {
if(i == j)
continue;
if(((ColumnGroup)cg.elementAt(i)).getStartIndex() >= ((ColumnGroup)cg.elementAt(j)).getStartIndex() && ((ColumnGroup)cg.elementAt(i)).getEndIndex() <= ((ColumnGroup)cg.elementAt(j)).getEndIndex())
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((ColumnGroup)cg.elementAt(i)).setY(y);
((ColumnGroup)cg.elementAt(i)).setHeight(height);
int width = 0;
for(int j = ((ColumnGroup)cg.elementAt(i)).getStartIndex(); j <= ((ColumnGroup)cg.elementAt(i)).getEndIndex(); j++)
width += tcm.getColumn(j).getWidth();
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for(int i = 0; i < cmp.length; i++) {
cmp[i] = renderer.getTableCellRendererComponent(header.getTable(), header.getColumnModel().getColumn(i).getHeaderValue(), false, false, -1, i);
rendererPane.add(cmp[i]);
int x = 0;
int y = 0;
for(int j = 0; j < i; j++)
x += tcm.getColumn(j).getWidth();
for(int j = 0; j < cmpGroup.length; j++) {
if(i >= ((ColumnGroup)cg.elementAt(j)).getStartIndex() && i <= ((ColumnGroup)cg.elementAt(j)).getEndIndex())
y = ((ColumnGroup)cg.elementAt(j)).getY() + ((ColumnGroup)cg.elementAt(j)).getHeight();
rendererPane.add(cmp[i]);
rendererPane.paintComponent(g, cmp[i], header, x, y, tcm.getColumn(i).getWidth(), (header.getPreferredSize().height - y), true);
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public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col) {
if(((GroupableTableHeader)table.getTableHeader()).getNewLineCount(value.toString()) == 1) {
JLabel header = new JLabel();
header.setForeground(table.getTableHeader().getForeground());
header.setBackground(table.getTableHeader().getBackground());
header.setFont(table.getTableHeader().getFont());
header.setHorizontalAlignment(JLabel.CENTER);
header.setText(value.toString());
header.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return header;
else {
setOpaque(true);
setForeground(UIManager.getColor("TableHeader.foreground"));
setBackground(UIManager.getColor("TableHeader.background"));
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
setFont(UIManager.getFont("TableHeader.font"));
ListCellRenderer renderer = getCellRenderer();
((JLabel)renderer).setHorizontalAlignment(SwingConstants.CENTER);
setCellRenderer(renderer);
String str = value.toString();
BufferedReader br = new BufferedReader(new StringReader(str));
String line;
Vector<String> v = new Vector<String>(1, 1);
try {
while((line = br.readLine()) != null) {
v.addElement(line);
catch(IOException ex) {
JOptionPane.showMessageDialog(null, ex.getMessage(), "Informasi", JOptionPane.INFORMATION_MESSAGE);
System.exit(0);
setListData(v);
return this;OMG ! the code i posted before is incomplete
sorry...
here's the complete one, pls help :
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import java.util.*;
import javax.swing.border.*;
import javax.swing.plaf.basic.*;
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GroupableHeaderExample() {
super("Groupable Header Example");
JScrollPane sp = new JScrollPane();
Object[][] data = {{"b1k1", "b1k2", "b1k3", "b1k4", "b1k5"}, {"b2k1", "b2k2", "b2k3", "b2k4", "b2k5"}};
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protected JTableHeader createDefaultTableHeader() {
return new GroupableTableHeader(columnModel);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
ColumnGroup cg = new ColumnGroup("CG", 0, 4);
ColumnGroup cg2 = new ColumnGroup("CG2\nmmm", 1, 4);
ColumnGroup cg3 = new ColumnGroup("CG3", 1, 2);
ColumnGroup cg4 = new ColumnGroup("CG4", 3, 4);
GroupableTableHeader header = (GroupableTableHeader)table.getTableHeader();
header.addColumnGroup(cg4);
header.addColumnGroup(cg2);
header.addColumnGroup(cg3);
header.addColumnGroup(cg);
header.fitHeight();
sp.setViewportView(table);
getContentPane().add(sp);
setSize(400, 300);
public static void main(String[] args) {
GroupableHeaderExample frame = new GroupableHeaderExample();
frame.addWindowListener( new WindowAdapter() {
public void windowClosing( WindowEvent e ) {
System.exit(0);
frame.setVisible(true);
class GroupableTableHeader extends JTableHeader {
private Vector<ColumnGroup> columnGroups = new Vector<ColumnGroup>(1, 1);
public GroupableTableHeader(TableColumnModel model) {
super(model);
setUI(new GroupableTableHeaderUI());
setReorderingAllowed(false);
public void addColumnGroup(ColumnGroup cg) {
if(columnGroups.size() == 0) {
columnGroups.addElement(cg);
return;
int size = columnGroups.size();
for(int i = 0; i < size; i++) {
if(cg.getLength() > ((ColumnGroup)columnGroups.elementAt(i)).getLength()) {
columnGroups.insertElementAt(cg, i);
break;
else {
if(i == size - 1)
columnGroups.addElement(cg);
public void fitHeight() {
int[] counter = new int[getTable().getColumnCount()];
for(int i = 0; i < getTable().getColumnCount(); i++) {
int level = 0;
for(int j = 0; j < columnGroups.size(); j++) {
if(i >= ((ColumnGroup)columnGroups.elementAt(j)).getStartIndex() && i <= ((ColumnGroup)columnGroups.elementAt(j)).getEndIndex())
level = level + getNewLineCount(((ColumnGroup)columnGroups.elementAt(j)).getText());
counter[i] = level + getNewLineCount(table.getColumnModel().getColumn(i).getHeaderValue().toString());
int maxCounter = counter[0];
for(int i = 0; i < counter.length; i++) {
if(counter[i] > maxCounter)
maxCounter = counter;
setPreferredSize(new Dimension(100, (maxCounter) * 20));
public Vector getColumnGroups() {
return columnGroups;
public int getNewLineCount(String str) {
BufferedReader br = new BufferedReader(new StringReader(str));
String line;
Vector<String> v = new Vector<String>(1, 1);
try {
while((line = br.readLine()) != null) {
v.addElement(line);
catch(IOException ex) {
JOptionPane.showMessageDialog(null, ex.getMessage(), "Informasi", JOptionPane.INFORMATION_MESSAGE);
System.exit(0);
int i = 0;
boolean b = false;
for(i = 0; i < v.size(); i++) {
for(int j = 0; j < v.elementAt(i).length(); j++) {
if(v.elementAt(i).charAt(j) != ' ') {
b = true;
break;
if(b)
break;
if(i == v.size())
i = 0;
return v.size() - i;
public void updateUI(){
setUI(new GroupableTableHeaderUI());
class GroupableTableHeaderUI extends BasicTableHeaderUI {
public void paint(Graphics g, JComponent c) {
TableCellRenderer renderer = new MultiLineHeaderRendererEx();
Component[] cmp = new Component[header.getColumnModel().getColumnCount()];
Vector cg = ((GroupableTableHeader)header).getColumnGroups();
Component[] cmpGroup = new Component[cg.size()];
TableColumnModel tcm = header.getTable().getColumnModel();
for(int i = 0; i < cmpGroup.length; i++) {
cmpGroup[i] = renderer.getTableCellRendererComponent(header.getTable(), ((ColumnGroup)cg.elementAt(i)).getText(), false, false, -1, i);
int x = 0;
int y = 0;
int height = 20 * ((GroupableTableHeader)header).getNewLineCount(((ColumnGroup)cg.elementAt(i)).getText());
for(int j = 0; j < ((ColumnGroup)cg.elementAt(i)).getStartIndex(); j++)
x += tcm.getColumn(j).getWidth();
for(int j = 0; j < cmpGroup.length; j++) {
if(i == j)
continue;
if(((ColumnGroup)cg.elementAt(i)).getStartIndex() >= ((ColumnGroup)cg.elementAt(j)).getStartIndex() && ((ColumnGroup)cg.elementAt(i)).getEndIndex() <= ((ColumnGroup)cg.elementAt(j)).getEndIndex())
y = ((ColumnGroup)cg.elementAt(j)).getY() + ((ColumnGroup)cg.elementAt(j)).getHeight();
((ColumnGroup)cg.elementAt(i)).setY(y);
((ColumnGroup)cg.elementAt(i)).setHeight(height);
int width = 0;
for(int j = ((ColumnGroup)cg.elementAt(i)).getStartIndex(); j <= ((ColumnGroup)cg.elementAt(i)).getEndIndex(); j++)
width += tcm.getColumn(j).getWidth();
rendererPane.add(cmpGroup[i]);
rendererPane.paintComponent(g, cmpGroup[i], header, x, y, width, height, true);
for(int i = 0; i < cmp.length; i++) {
cmp[i] = renderer.getTableCellRendererComponent(header.getTable(), header.getColumnModel().getColumn(i).getHeaderValue(), false, false, -1, i);
int x = 0;
int y = 0;
for(int j = 0; j < i; j++)
x += tcm.getColumn(j).getWidth();
for(int j = 0; j < cmpGroup.length; j++) {
if(i >= ((ColumnGroup)cg.elementAt(j)).getStartIndex() && i <= ((ColumnGroup)cg.elementAt(j)).getEndIndex())
y = ((ColumnGroup)cg.elementAt(j)).getY() + ((ColumnGroup)cg.elementAt(j)).getHeight();
rendererPane.add(cmp[i]);
rendererPane.paintComponent(g, cmp[i], header, x, y, tcm.getColumn(i).getWidth(), (header.getPreferredSize().height - y), true);
class MultiLineHeaderRendererEx extends JList implements TableCellRenderer {
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col) {
if(((GroupableTableHeader)table.getTableHeader()).getNewLineCount(value.toString()) == 1) {
JLabel header = new JLabel();
header.setForeground(table.getTableHeader().getForeground());
header.setBackground(table.getTableHeader().getBackground());
header.setFont(table.getTableHeader().getFont());
header.setHorizontalAlignment(JLabel.CENTER);
header.setText(value.toString());
header.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return header;
else {
setOpaque(true);
setForeground(UIManager.getColor("TableHeader.foreground"));
setBackground(UIManager.getColor("TableHeader.background"));
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
setFont(UIManager.getFont("TableHeader.font"));
ListCellRenderer renderer = getCellRenderer();
((JLabel)renderer).setHorizontalAlignment(SwingConstants.CENTER);
setCellRenderer(renderer);
String str = value.toString();
BufferedReader br = new BufferedReader(new StringReader(str));
String line;
Vector<String> v = new Vector<String>(1, 1);
try {
while((line = br.readLine()) != null) {
v.addElement(line);
catch(IOException ex) {
JOptionPane.showMessageDialog(null, ex.getMessage(), "Informasi", JOptionPane.INFORMATION_MESSAGE);
System.exit(0);
setListData(v);
return this;
class ColumnGroup {
private String text;
private int startIndex, endIndex, y, height;
public ColumnGroup(String text, int startIndex, int endIndex) {
this.text = text;
this.startIndex = startIndex;
this.endIndex = endIndex;
public int getEndIndex() {
return endIndex;
public int getHeight() {
return height;
public int getLength() {
return endIndex - startIndex;
public int getStartIndex() {
return startIndex;
public String getText() {
return text;
public int getY() {
return y;
public void setHeight(int height) {
this.height = height;
public void setY(int y) {
this.y = y; -
JTable - Groupable/Multiline Header
Hi Everybody,
I found this code to create a groupable/multiline header for a JTable. It seems to be working fine with JDK 1.1 and we are using 1.4 now. I keep getting 2 errors with the GroupableTableHeaderUI class and has been busy the whole weekend trying to fix it, with no success. Can someone please help? Thanks. Here is the code:
* |-----------------------------------------------------|
* | | Name | Language |
* | |-----------------|--------------------------|
* | SNo. | | | | Others |
* | | 1 | 2 | Native |-----------------|
* | | | | | 2 | 3 |
* |-----------------------------------------------------|
* | | | | | | |
package tableheader;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import swing.table.*;
public class GroupableHeaderExample extends JFrame {
GroupableHeaderExample() {
super( "Groupable Header Example" );
DefaultTableModel dm = new DefaultTableModel();
dm.setDataVector(new Object[][]{
{"119","foo","bar","ja","ko","zh"},
{"911","bar","foo","en","fr","pt"}},
new Object[]{"SNo.","1","2","Native","2","3"});
JTable table = new JTable( dm ) {
protected JTableHeader createDefaultTableHeader() {
return new GroupableTableHeader(columnModel);
TableColumnModel cm = table.getColumnModel();
ColumnGroup g_name = new ColumnGroup("Name");
g_name.add(cm.getColumn(1));
g_name.add(cm.getColumn(2));
ColumnGroup g_lang = new ColumnGroup("Language");
g_lang.add(cm.getColumn(3));
ColumnGroup g_other = new ColumnGroup("Others");
g_other.add(cm.getColumn(4));
g_other.add(cm.getColumn(5));
g_lang.add(g_other);
GroupableTableHeader header = (GroupableTableHeader)table.getTableHeader();
header.addColumnGroup(g_name);
header.addColumnGroup(g_lang);
JScrollPane scroll = new JScrollPane( table );
getContentPane().add( scroll );
setSize( 400, 120 );
public static void main(String[] args) {
GroupableHeaderExample frame = new GroupableHeaderExample();
frame.addWindowListener( new WindowAdapter() {
public void windowClosing( WindowEvent e ) {
System.exit(0);
frame.setVisible(true);
package swing.table;
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class GroupableTableHeader extends JTableHeader {
private static final String uiClassID = "GroupableTableHeaderUI";
protected Vector columnGroups = null;
public GroupableTableHeader(TableColumnModel model) {
super(model);
setUI(new GroupableTableHeaderUI());
setReorderingAllowed(false);
public void setReorderingAllowed(boolean b) {
reorderingAllowed = false;
public void addColumnGroup(ColumnGroup g) {
if (columnGroups == null) {
columnGroups = new Vector();
columnGroups.addElement(g);
public Enumeration getColumnGroups(TableColumn col) {
if (columnGroups == null) return null;
Enumeration enum = columnGroups.elements();
while (enum.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup)enum.nextElement();
Vector v_ret = (Vector)cGroup.getColumnGroups(col,new Vector());
if (v_ret != null) {
return v_ret.elements();
return null;
public void setColumnMargin() {
if (columnGroups == null) return;
int columnMargin = getColumnModel().getColumnMargin();
Enumeration enum = columnGroups.elements();
while (enum.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup)enum.nextElement();
cGroup.setColumnMargin(columnMargin);
package swing.table;
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.plaf.basic.*;
public class GroupableTableHeaderUI extends BasicTableHeaderUI {
public void paint(Graphics g, JComponent c) {
Rectangle clipBounds = g.getClipBounds();
if (header.getColumnModel() == null) return;
((GroupableTableHeader)header).setColumnMargin();
int column = 0;
Dimension size = header.getSize();
Rectangle cellRect = new Rectangle(0, 0, size.width, size.height);
Hashtable h = new Hashtable();
int columnMargin = header.getColumnModel().getColumnMargin();
Enumeration enumeration = header.getColumnModel().getColumns();
while (enumeration.hasMoreElements()) {
cellRect.height = size.height;
cellRect.y = 0;
TableColumn aColumn = (TableColumn)enumeration.nextElement();
Enumeration cGroups = ((GroupableTableHeader)header).getColumnGroups(aColumn);
if (cGroups != null) {
int groupHeight = 0;
while (cGroups.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup)cGroups.nextElement();
Rectangle groupRect = (Rectangle)h.get(cGroup);
if (groupRect == null) {
groupRect = new Rectangle(cellRect);
Dimension d = cGroup.getSize(header.getTable());
groupRect.width = d.width;
groupRect.height = d.height;
h.put(cGroup, groupRect);
paintCell(g, groupRect, cGroup);
groupHeight += groupRect.height;
cellRect.height = size.height - groupHeight;
cellRect.y = groupHeight;
cellRect.width = aColumn.getWidth() + columnMargin;
if (cellRect.intersects(clipBounds)) {
paintCell(g, cellRect, column);
cellRect.x += cellRect.width;
column++;
private void paintCell(Graphics g, Rectangle cellRect, int columnIndex) {
TableColumn aColumn = header.getColumnModel().getColumn(columnIndex);
TableCellRenderer renderer = aColumn.getHeaderRenderer();
Component component = renderer.getTableCellRendererComponent(
header.getTable(), aColumn.getHeaderValue(),false, false, -1, columnIndex);
rendererPane.add(component);
rendererPane.paintComponent(g, component, header, cellRect.x, cellRect.y,
cellRect.width, cellRect.height, true);
private void paintCell(Graphics g, Rectangle cellRect,ColumnGroup cGroup) {
TableCellRenderer renderer = cGroup.getHeaderRenderer();
Component component = renderer.getTableCellRendererComponent(
header.getTable(), cGroup.getHeaderValue(),false, false, -1, -1);
rendererPane.add(component);
rendererPane.paintComponent(g, component, header, cellRect.x, cellRect.y,
cellRect.width, cellRect.height, true);
private int getHeaderHeight() {
int height = 0;
TableColumnModel columnModel = header.getColumnModel();
for(int column = 0; column < columnModel.getColumnCount(); column++) {
TableColumn aColumn = columnModel.getColumn(column);
TableCellRenderer renderer = aColumn.getHeaderRenderer();
Component comp = renderer.getTableCellRendererComponent(
header.getTable(), aColumn.getHeaderValue(), false, false,-1, column);
int cHeight = comp.getPreferredSize().height;
Enumeration enum = ((GroupableTableHeader)header).getColumnGroups(aColumn);
if (enum != null) {
while (enum.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup)enum.nextElement();
cHeight += cGroup.getSize(header.getTable()).height;
height = Math.max(height, cHeight);
return height;
private Dimension createHeaderSize(long width) {
TableColumnModel columnModel = header.getColumnModel();
width += columnModel.getColumnMargin() * columnModel.getColumnCount();
if (width > Integer.MAX_VALUE) {
width = Integer.MAX_VALUE;
return new Dimension((int)width, getHeaderHeight());
public Dimension getPreferredSize(JComponent c) {
long width = 0;
Enumeration enumeration = header.getColumnModel().getColumns();
while (enumeration.hasMoreElements()) {
TableColumn aColumn = (TableColumn)enumeration.nextElement();
width = width + aColumn.getPreferredWidth();
return createHeaderSize(width);
package swing.table;
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class ColumnGroup {
protected TableCellRenderer renderer;
protected Vector v;
protected String text;
protected int margin=0;
public ColumnGroup(String text) {
this(null,text);
public ColumnGroup(TableCellRenderer renderer,String text) {
if (renderer == null) {
this.renderer = new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
JTableHeader header = table.getTableHeader();
if (header != null) {
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
setHorizontalAlignment(JLabel.CENTER);
setText((value == null) ? "" : value.toString());
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return this;
} else {
this.renderer = renderer;
this.text = text;
v = new Vector();
* @param obj TableColumn or ColumnGroup
public void add(Object obj) {
if (obj == null) { return; }
v.addElement(obj);
* @param c TableColumn
* @param v ColumnGroups
public Vector getColumnGroups(TableColumn c, Vector g) {
g.addElement(this);
if (v.contains(c)) return g;
Enumeration enum = v.elements();
while (enum.hasMoreElements()) {
Object obj = enum.nextElement();
if (obj instanceof ColumnGroup) {
Vector groups =
(Vector)((ColumnGroup)obj).getColumnGroups(c,(Vector)g.clone());
if (groups != null) return groups;
return null;
public TableCellRenderer getHeaderRenderer() {
return renderer;
public void setHeaderRenderer(TableCellRenderer renderer) {
if (renderer != null) {
this.renderer = renderer;
public Object getHeaderValue() {
return text;
public Dimension getSize(JTable table) {
Component comp = renderer.getTableCellRendererComponent(
table, getHeaderValue(), false, false,-1, -1);
int height = comp.getPreferredSize().height;
int width = 0;
Enumeration enum = v.elements();
while (enum.hasMoreElements()) {
Object obj = enum.nextElement();
if (obj instanceof TableColumn) {
TableColumn aColumn = (TableColumn)obj;
width += aColumn.getWidth();
width += margin;
} else {
width += ((ColumnGroup)obj).getSize(table).width;
return new Dimension(width, height);
public void setColumnMargin(int margin) {
this.margin = margin;
Enumeration enum = v.elements();
while (enum.hasMoreElements()) {
Object obj = enum.nextElement();
if (obj instanceof ColumnGroup) {
((ColumnGroup)obj).setColumnMargin(margin);in GroupableTableHeaderUI class replace "aColumn.getHeaderRenderer();" by "header.getDefaultRenderer ();" and try again..
this should solve ur problem ..
Indranil -
I'm making a program which included returning abstract string from the other class to the label. It works good, but the only problem is that the string is always displayed in one line in the label. I use the correct command to make a multiline string and it works perfectly when I implement the string alone in a test program, but when I return it to the label it again displays in single line. Any advices on this one ?
A JLabel always displays as a single line of text (unless you use HTML),
If you need further help then you need to create a [Short, Self Contained, Compilable and Executable, Example Program (SSCCE)|http://homepage1.nifty.com/algafield/sscce.html], that demonstrates the incorrect behaviour.
Don't forget to use the Code Formatting Tags so the posted code retains its original formatting. That is done by selecting the code and then clicking on the "Code" button above the question input area. -
Japanese characters in JEditorPane HTML
We have an application that displays HTML in a JEditorPane to take advantage of the font changes. The string starts off with <html><body><font face='Dialog' size='-1'><b>One of our translation testers is complaining that some of the Japanese characters look "jaggy" (I think because they look like italics to me). However, most of the Japanese characters in the same field look fine (albiet bold). At no point in the string to I switch to italic, in fact everything in this case is bold.
We don't seem to have this problem anywhere else in our UI with traditional JLabels, JOptionPanes, etc. Is there something querky about JEditorPane and/or HTML rendering, the mapping of the Dialog font, or something? Any suggestions on anything else to check.Hi David, yes 'Content-type: text/html; charset=utf-8' is in
the header...
Thanks for the note on the poor Japanese translations,
someone else is
proofing it now.
J
"David Powers" <[email protected]> wrote in message
news:epvh06$dq6$[email protected]..
> James Noon wrote:
> > My web app sends confirmation emails to customers
in multiple languages,
all
> > work fine apart from Japanese which display all as
? on the email.
> >
> > Part of of my email code is formatted as this (ie
sending as utf-8)
>
> What is the Content-type header of the email?
>
> It needs to be 'Content-type: text/html; charset=utf-8'.
>
> This needs to be sent as an email header, not just in
the body of the
HTML.
>
> --
> David Powers, Adobe Community Expert
> Author, "Foundation PHP for Dreamweaver 8" (friends of
ED)
> Author, "PHP Solutions" (friends of ED)
>
http://foundationphp.com/
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