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I'm using answer https://stackoverflow.com/a/5820366 and http://tips4java.wordpress.com/2008/11/10/table-column-adjuster/ and it works, but frequently columns' sizes are too wide or too narrow.
No matter filling my table with HTML or text.
Using standard TableModel from oracle documentation.
Resize mode = JTable.AUTO_RESIZE_OFF
Container of my tabel is jGoodies:
FormLayout currentEventLayout = new FormLayout(
"fill:p",
"pref, pref");
PanelBuilder currentEventBuilder = new PanelBuilder(currentEventLayout);
currentEventBuilder.add(mainQuotesTable.getTableHeader(), constraints.xy(1, 1));
currentEventBuilder.add(mainQuotesTable, constraints.xy(1, 2));
HTML example:
"<html><pre><font size=+1 face='Arial'>" + firstValue + "\n" + secondValue + "</font></pre></html>"
simple row:
firstValue + " - " + secondValue
Here is the example:
public class TableAdjustExample {
private static JTable mainTable;
private static Random random = new Random();
private static List<Data> data;
private static class Data {
String name;
String surname;
private Data(String name, String surname) {
this.name = name;
this.surname = surname;
}
}
public static void main(String[] args) {
data = stubProvider();
final JFrame frame = new JFrame("table adjust example");
frame.add(createUI());
frame.pack();
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setSize(350, 400);
frame.setVisible(true);
update();
java.util.Timer timer = new java.util.Timer();
timer.schedule(new TimerTask() {
@Override
public void run() {
update();
}
}, 3000, 3000);
}
private static JPanel createUI() {
JPanel jPanel = new JPanel();
mainTable = new JTable(2, 3);
mainTable.setModel(new AbstractTableModel() {
@Override
public int getRowCount() {
return data.size();
}
@Override
public int getColumnCount() {
return 2;
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
Data dataItem = data.get(rowIndex);
if (columnIndex == 0) {
return dataItem.name;
}
if (columnIndex == 1) {
return dataItem.surname;
}
throw new IllegalStateException();
}
});
mainTable.setGridColor(Color.black);
mainTable.setShowHorizontalLines(false);
mainTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
final TableCellRenderer defaultRenderer = mainTable.getTableHeader().getDefaultRenderer();
mainTable.getTableHeader().setDefaultRenderer(new TableCellRenderer() {
@Override
public Component getTableCellRendererComponent(JTable jTable, Object o, boolean b, boolean b1, int row, int column) {
JLabel parent = (JLabel) defaultRenderer.getTableCellRendererComponent(jTable, o, b, b1, row, column);
if (column == 0) {
parent.setText("name");
} else {
parent.setText("surname");
}
return parent;
}
});
jPanel.add(mainTable.getTableHeader());
jPanel.add(mainTable);
return jPanel;
}
private static void update() {
System.out.println("updating");
data = stubProvider();
adjustJTableRowSizes(mainTable);
for (int i = 0; i < mainTable.getColumnCount(); i++) {
adjustColumnSizes(mainTable, i, 2);
}
}
private static void adjustJTableRowSizes(JTable jTable) {
for (int row = 0; row < jTable.getRowCount(); row++) {
int maxHeight = 0;
for (int column = 0; column < jTable.getColumnCount(); column++) {
TableCellRenderer cellRenderer = jTable.getCellRenderer(row, column);
Object valueAt = jTable.getValueAt(row, column);
Component tableCellRendererComponent = cellRenderer.getTableCellRendererComponent(jTable, valueAt, false, false, row, column);
int heightPreferable = tableCellRendererComponent.getPreferredSize().height;
maxHeight = Math.max(heightPreferable, maxHeight);
}
jTable.setRowHeight(row, maxHeight);
}
}
public static void adjustColumnSizes(JTable table, int column, int margin) {
DefaultTableColumnModel colModel = (DefaultTableColumnModel) table.getColumnModel();
TableColumn col = colModel.getColumn(column);
int width;
TableCellRenderer renderer = col.getHeaderRenderer();
if (renderer == null) {
renderer = table.getTableHeader().getDefaultRenderer();
}
JLabel comp = (JLabel) renderer.getTableCellRendererComponent(
table, col.getHeaderValue(), false, false, 0, 0);
width = comp.getPreferredSize().width;
for (int r = 0; r < table.getRowCount(); r++) {
renderer = table.getCellRenderer(r, column);
comp = (JLabel) renderer.getTableCellRendererComponent(
table, table.getValueAt(r, column), false, false, r, column);
int currentWidth = comp.getPreferredSize().width;
width = Math.max(width, currentWidth);
}
width += 2 * margin;
col.setPreferredWidth(width);
}
private static List<Data> stubProvider() {
List<Data> data = new ArrayList<Data>();
for (int i = 0; i < 4; i++) {
data.add(new Data(
"<html>" +
"<div style='font-size: 15px'>Jason</div>" +
"<div style='font-size: 15px'>" + random.nextInt() + "</div>" +
"</html>",
"Statham " + random.nextInt()));
}
return data;
}
}
I have such problem with row height adjustment. Using of <pre>\n</pre> instead of <br> fixed row adjustment.
814
Seems to be working okay for me...
public class TestTable01 extends JPanel {
private JTable mainTable;
public TestTable01() {
super(new GridLayout(1, 0));
String[] columnNames = {"First Name",
"Last Name",
"Sport",
"# of Years",
"Vegetarian"};
Object[][] data = {
{"Kathy", "Smith",
"Snowboarding", new Integer(5), new Boolean(false)},
{"John", "Doe",
"Rowing", new Integer(3), new Boolean(true)},
{"Sue", "Black",
"Knitting", new Integer(2), new Boolean(false)},
{"Jane", "White",
"Speed reading", new Integer(20), new Boolean(true)},
{"Joe", "Brown",
"Pool", new Integer(10), new Boolean(false)}
};
mainTable = new JTable(data, columnNames);
mainTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
mainTable.setPreferredScrollableViewportSize(new Dimension(500, 70));
mainTable.setFillsViewportHeight(true);
update();
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(mainTable);
//Add the scroll pane to this panel.
add(scrollPane);
}
/**
* Create the GUI and show it. For thread safety, this method should be
* invoked from the event-dispatching thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("SimpleTableDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
TestTable01 newContentPane = new TestTable01();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
}
private void update() {
System.out.println("updating");
adjustJTableRowSizes(mainTable);
for (int i = 0; i < mainTable.getColumnCount(); i++) {
adjustColumnSizes(mainTable, i, 2);
}
}
private void adjustJTableRowSizes(JTable jTable) {
for (int row = 0; row < jTable.getRowCount(); row++) {
int maxHeight = 0;
for (int column = 0; column < jTable.getColumnCount(); column++) {
TableCellRenderer cellRenderer = jTable.getCellRenderer(row, column);
Object valueAt = jTable.getValueAt(row, column);
Component tableCellRendererComponent = cellRenderer.getTableCellRendererComponent(jTable, valueAt, false, false, row, column);
int heightPreferable = tableCellRendererComponent.getPreferredSize().height;
maxHeight = Math.max(heightPreferable, maxHeight);
}
jTable.setRowHeight(row, maxHeight);
}
}
public void adjustColumnSizes(JTable table, int column, int margin) {
DefaultTableColumnModel colModel = (DefaultTableColumnModel) table.getColumnModel();
TableColumn col = colModel.getColumn(column);
int width;
TableCellRenderer renderer = col.getHeaderRenderer();
if (renderer == null) {
renderer = table.getTableHeader().getDefaultRenderer();
}
Component comp = renderer.getTableCellRendererComponent(table, col.getHeaderValue(), false, false, 0, 0);
width = comp.getPreferredSize().width;
for (int r = 0; r < table.getRowCount(); r++) {
renderer = table.getCellRenderer(r, column);
comp = renderer.getTableCellRendererComponent(table, table.getValueAt(r, column), false, false, r, column);
int currentWidth = comp.getPreferredSize().width;
width = Math.max(width, currentWidth);
}
width += 2 * margin;
col.setPreferredWidth(width);
col.setWidth(width);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
UPDATED
There are a number of issues with your example.
JScrollPane, this will take care of adding the header...JPanel is FlowLayout, in this case, it's probably not what you want, you probably want to use a BorderLayout
java.util.Timer will violate this policy, this could cause the model and view to fall out sync. Use a javax.swing.Timer instead.<div> next to each will cause the html layout engine to place a weak break between the elements. That is, if the engine decides there's not enough available space to render the two elements together, it will split them. Better to use a single <div> with two <span> tags instead...I would have a read of
public class TestColumnWidths {
private static JTable mainTable;
private static Random random = new Random();
private static List<Data> data;
private static class Data {
String name;
String surname;
private Data(String name, String surname) {
this.name = name;
this.surname = surname;
}
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
data = stubProvider();
final JFrame frame = new JFrame("table adjust example");
frame.add(createUI());
frame.pack();
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
update();
// java.util.Timer timer = new java.util.Timer();
// timer.schedule(new TimerTask() {
// @Override
// public void run() {
// update();
// }
// }, 3000, 3000);
javax.swing.Timer timer = new javax.swing.Timer(3000, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
update();
}
});
timer.setRepeats(true);
timer.setCoalesce(true);
timer.start();
}
});
}
private static JPanel createUI() {
JPanel jPanel = new JPanel();
mainTable = new JTable(2, 3);
mainTable.setModel(new AbstractTableModel() {
@Override
public int getRowCount() {
return data.size();
}
@Override
public int getColumnCount() {
return 2;
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
Data dataItem = data.get(rowIndex);
if (columnIndex == 0) {
return dataItem.name;
}
if (columnIndex == 1) {
return dataItem.surname;
}
throw new IllegalStateException();
}
});
mainTable.setGridColor(Color.black);
mainTable.setShowHorizontalLines(false);
mainTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
final TableCellRenderer defaultRenderer = mainTable.getTableHeader().getDefaultRenderer();
mainTable.getTableHeader().setDefaultRenderer(new TableCellRenderer() {
@Override
public Component getTableCellRendererComponent(JTable jTable, Object o, boolean b, boolean b1, int row, int column) {
JLabel parent = (JLabel) defaultRenderer.getTableCellRendererComponent(jTable, o, b, b1, row, column);
if (column == 0) {
parent.setText("name");
} else {
parent.setText("surname");
}
return parent;
}
});
// jPanel.add(mainTable.getTableHeader());
// jPanel.add(mainTable);
jPanel.setLayout(new BorderLayout());
jPanel.add(new JScrollPane(mainTable));
return jPanel;
}
private static void update() {
System.out.println("updating");
data = stubProvider();
adjustJTableRowSizes(mainTable);
for (int i = 0; i < mainTable.getColumnCount(); i++) {
adjustColumnSizes(mainTable, i, 2);
}
}
private static void adjustJTableRowSizes(JTable jTable) {
for (int row = 0; row < jTable.getRowCount(); row++) {
int maxHeight = 0;
for (int column = 0; column < jTable.getColumnCount(); column++) {
TableCellRenderer cellRenderer = jTable.getCellRenderer(row, column);
Object valueAt = jTable.getValueAt(row, column);
Component tableCellRendererComponent = cellRenderer.getTableCellRendererComponent(jTable, valueAt, false, false, row, column);
int heightPreferable = tableCellRendererComponent.getPreferredSize().height;
maxHeight = Math.max(heightPreferable, maxHeight);
}
jTable.setRowHeight(row, maxHeight);
}
}
public static void adjustColumnSizes(JTable table, int column, int margin) {
DefaultTableColumnModel colModel = (DefaultTableColumnModel) table.getColumnModel();
TableColumn col = colModel.getColumn(column);
int width;
TableCellRenderer renderer = col.getHeaderRenderer();
if (renderer == null) {
renderer = table.getTableHeader().getDefaultRenderer();
}
Component comp = renderer.getTableCellRendererComponent(
table, col.getHeaderValue(), false, false, 0, 0);
width = comp.getPreferredSize().width;
for (int r = 0; r < table.getRowCount(); r++) {
renderer = table.getCellRenderer(r, column);
comp = renderer.getTableCellRendererComponent(
table, table.getValueAt(r, column), false, false, r, column);
int currentWidth = comp.getPreferredSize().width;
width = Math.max(width, currentWidth);
}
width += 2 * margin;
col.setPreferredWidth(width);
}
private static List<Data> stubProvider() {
List<Data> data = new ArrayList<Data>();
for (int i = 0; i < 4; i++) {
data.add(new Data(
"<html>"
+ "<div>"
+ "<span style='font-size: 15px'>Jason</span>"
+ "<span style='font-size: 15px'>" + random.nextInt() + "</span>"
+ "</div>"
+ "</html>",
"Statham " + random.nextInt()));
}
return data;
}
}
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