Maximum Allowed Text Length for JTable Column

Can you please help me with a JTable Doubt
How do I set the Maximum Allowed Text Length for a Particular Column of a JTable?

Thanks a lot mate. I used the following
     class MaximumLengthFilter extends DocumentFilter {
               public void replace(DocumentFilter.FilterBypass fb, int offset, int length,
                         String text, AttributeSet attr) throws BadLocationException {
                    if ((fb.getDocument().getLength() + length) < 10)
                         fb.replace(offset, length, text, attr);
                    else
                         Toolkit.getDefaultToolkit().beep();
          }

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Hi,
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CODE VARCHAR2(100),
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FIELDS TERMINATED BY X'9' TRAILING NULLCOLS
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Hi
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char(40000) OPTIONALLY ENCLOSED BY '"' .
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CODE,
DESC,
RATE,
INCREASE,
COUNTRY,
DEST
char(40000) OPTIONALLY ENCLOSED BY '"',
WEEK,
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public class FileModel5 extends AbstractTableModel
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// initialize number of rows to start out with ...
protected static int START_NUM_ROWS = 0;
protected int nextEmptyRow = 0;
protected int numRows = 0;
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static final public String mailName = "Mail Id";
static final public String postName = "Post Office Id";
static final public String columnNames[] = {"File", "Mail Id", "Post Office Id"};
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public FileModel5()
data = new Vector();
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if(isEditable)
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return false;
* JTable uses this method to determine the default renderer/
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try
FileRecord5 p = (FileRecord5)data.elementAt(row);
switch (column)
case 0:
return (String)p.file;
case 1:
return (String)p.mailName;
case 2:
return (String)p.postName;
catch (Exception e)
return "";
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public synchronized FileRecord5 getRecordAt(int row) throws Exception
try
return (FileRecord5)data.elementAt(row);
catch (Exception e)
throw new Exception("Record not found");
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* @param tableRecord
public synchronized void updateRecord(FileRecord5 tableRecord)
String file = tableRecord.file;
FileRecord5 p = null;
int index = -1;
boolean found = false;
boolean addedRow = false;
int i = 0;
while (!found && (i < nextEmptyRow))
p = (FileRecord5)data.elementAt(i);
if (p.file.equals(file))
found = true;
index = i;
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i++;
if (found)
{ //update
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numRows++;
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index = nextEmptyRow;
data.addElement(tableRecord);
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if (addedRow)
nextEmptyRow++;
fireTableRowsInserted(index, index);
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int index = -1;
boolean found = false;
int i = 0;
while (!found && (i < nextEmptyRow))
p = (FileRecord5)data.elementAt(i);
if (p.file.equals(file))
found = true;
index = i;
} else
i++;
if (found)
data.removeElementAt(i);
nextEmptyRow--;
numRows--;
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numRows = START_NUM_ROWS;
data.removeAllElements();
nextEmptyRow = 0;
if (oldNumRows > START_NUM_ROWS)
fireTableRowsDeleted(START_NUM_ROWS, oldNumRows - 1);
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TableColumn col = mapTable.getColumnModel().getColumn(1);
javax.swing.JComboBox comboMail = new javax.swing.JComboBox();
int s = mailList.size();
for(int i=0; i<s; i++)
comboMail.addItem(mailList.get(i));
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renderer.setToolTipText("Click for mail Id list");
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int s = postList.size();
for(int i=0; i<s; i++)
combo.addItem(postList.get(i));
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renderer.setToolTipText("Click for post office Id list");
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//Set up tool tip for the mailName column header.
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if (headerRenderer instanceof DefaultTableCellRenderer)
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Mike Yin
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Hello,
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about.me/MoussaEltayeb

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Hello,
Is there a way to restrict the length of a JTable cell when being edited? i.e. I have a column of my JTable that should only contain strings of 3 characters at the most.
Many thanks,
Ian.

Hello,
import javax.swing.*;
import javax.swing.text.*;
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                    "Chasing toddlers",
                    new Integer(2),
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               "Sharon",
                    "Zakhour",
                    "Speed reading",
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               "Angela",
                    "Lih",
                    "Teaching high school",
                    new Integer(4),
                    new Boolean(false)
     public static final String[] COLHEADS =
          { "First Name", "Last Name", "Sport", "# of Years", "Vegetarian" };
}regards,
Tim

Maximum Allowed Text Length for JTable Column

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