Custom Tablemodel abd renderer.
Hello!
Here is my problem.
I have a Jtable that use a custom model to hold datas ('Ability' class instances).
The method getValueAt return an 'Ability' class instance depending on
the row.
Problem is that I implemented a custom renderer
mytable.setDefaultRenderer( Ability.class, new myCellRenderer)
And fact is that it not works!
Even if I return an Ability instance with getValueAt, the celle renderer is the default label renderer, not mine!
How can I get ride of that?
Many thanks in advance!
Hi,
does getColumnClass(column) method of your table model return the "Ability" class in the column, where you return Ability instances as values?
If you don't return it there, JTable will choose the default renderer for Object which is a JLabel displaying the result of the objects toString() method - guess, that is, what you see now.
greetings Marsian
P.S.: argl - class is c l a s s - don't know, how to write it, that it will be displayed correctly, sorry
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* ContractorTableModel.java
* Created on January 12, 2006, 11:59 PM
package code.suncertify.gui;
import java.util.ArrayList;
import java.util.logging.Logger;
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* @author Surya De
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later,
a. -
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suffix = (String)value.toString() ;
try {
prefix = value.toString().substring(0,value.toString().indexOf(":") + 1);
suffix = suffix.substring(suffix.indexOf(":")+1,suffix.length());
System.out.println("Prefix:"+prefix +"\tSufix :"+suffix);
}catch (Exception e){System.out.println("Nothing to index yet" + e);}
// value = (Object)suffix;
if(pHandler.newPostingsMatch.contains(prefix)) {
// if(hasFocus){pHandler.removePostingMatch(prefix);}
setBackgroundNonSelectionColor(Color.CYAN);
}else
setBackgroundNonSelectionColor(Color.WHITE);
System.out.println("Other <>values:\tValue" + value.toString() + "\tSEL:"+sel +"\tExpanded:" + "\tLEAF:"+leaf +
"\tRow:" +row + "\tfocus:"+hasFocus );
return this;
public void paintComponent(Graphics g){
System.out.println("Paint is called");
//g.drawLine(0, 0, 100, 100);
if(expired){
g.drawLine(22, 11, 100,11);
g.drawString(suffix, 22,15);
validate();
repaint();
}Figured it out right after this post :)
I had to do the following in my cellrenderer
setBackgroundNonSelectionColor(new Color(0, 0, 0, 0));As a parameter I sent a color object with a alpha level of 0 (completly transparent)... -
Help on customized TableModel please !!!!!!
hi there
i need to add a row at runtime, some people suggested me extend abstractTableModel to accomplish this. here is my tableModel:
class CustomTableModel extends AbstractTableModel
Vector rowData, columnNames;
public CustomTableModel(Vector rowData, Vector columnNames)
this.rowData = rowData;
this.columnNames = columnNames;
public void addRows(String n)
Vector tmp = new Vector();
tmp.add(n);
rowData.add(tmp);
fireTableDataChanged();
public void removeRows()
rowData.removeElement(rowData.lastElement());
fireTableDataChanged();
public int getColumnCount()
return columnNames.size();
public int getRowCount()
return rowData.size();
public boolean isCellEditable(int row, int col)
return true;
public String getColumnName(int idx)
return (String)columnNames.elementAt(idx);
public Object getValueAt(int row, int col)
return ((Vector)rowData.elementAt(row)).elementAt(col);
public void setValueAt(Object value, int row, int col)
((Vector)rowData.elementAt(row)).setElementAt(value, col);
fireTableCellUpdated(row, col);
in the run() of my runnable class, here is what i add the row
public void run()
int rowCounter = 1;
boolean okay = true;
SimpleDateFormat format = new SimpleDateFormat("H:mm:ss:SSS");
while (okay)
try
tablemodel = (CustomTableModel)jTable.getModel();
//just add a time stamp to the new cell
tablemodel.addRows(format.format(new Date()).toString());
//trying to repack the pane, not sure if this is ok?????
jScrollPane = new JScrollPane(jTable);
jScrollPane.setPreferredSize(new Dimension(480, 160));
jScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
p.removeAll();
p.add(jScrollPane);
p.revalidate();
Thread.sleep(1000);
++rowCounter;
catch (InterruptedException e)
okay = false;
but when i test it. the exception occured with following message
Exception occurred during event dispatching:
java.lang.ClassCastException: java.lang.String
at monitor.CustomTableModel.getValueAt(TimeTable.java:154)
at javax.swing.JTable.getValueAt(JTable.java:1714)
at javax.swing.JTable.prepareRenderer(JTable.java:3533)
at javax.swing.plaf.basic.BasicTableUI.paintCell(BasicTableUI.java:995)
at javax.swing.plaf.basic.BasicTableUI.paintCells(BasicTableUI.java:917)
at javax.swing.plaf.basic.BasicTableUI.paint(BasicTableUI.java:858)
at javax.swing.plaf.ComponentUI.update(ComponentUI.java:39)
at javax.swing.JComponent.paintComponent(JComponent.java:395)
at javax.swing.JComponent.paint(JComponent.java:687)
at javax.swing.JComponent.paintChildren(JComponent.java:498)
at javax.swing.JComponent.paint(JComponent.java:696)
at javax.swing.JViewport.paint(JViewport.java:668)
at javax.swing.JComponent.paintChildren(JComponent.java:498)
at javax.swing.JComponent.paint(JComponent.java:696)
at javax.swing.JComponent.paintChildren(JComponent.java:498)
at javax.swing.JComponent.paint(JComponent.java:696)
at javax.swing.JComponent.paintWithBuffer(JComponent.java:3878)
at javax.swing.JComponent._paintImmediately(JComponent.java:3821)
at javax.swing.JComponent.paintImmediately(JComponent.java:3672)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:370)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:124)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:337)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)
can anyone help me to point the problem? thank you.thank you all for your help.
if i extend DefaultTableModel, do i need to implement the addRow() method?
in the run() method, can i do the following to add a row to the table:
public void run()
int rowCounter = 1;
boolean okay = true;
SimpleDateFormat format = new SimpleDateFormat("H:mm:ss:SSS");
while (okay)
try
//get the model and use it to add rows to the table???????
tablemodel = (DefaultTableModel)jTable.getModel();
tablemodel.addRows();
//trying to repack the pane, not sure if this is ok?????
jScrollPane = new JScrollPane(jTable);
jScrollPane.setPreferredSize(new Dimension(480, 160));
jScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
p.removeAll();
p.add(jScrollPane);
p.revalidate();
Thread.sleep(1000);
++rowCounter;
catch (InterruptedException e)
okay = false;
can i directly work on the model to modify the table? thank you.
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